{"id":2893,"date":"2024-06-30T18:17:53","date_gmt":"2024-06-30T13:47:53","guid":{"rendered":"https:\/\/blog.iranetrade.com\/?p=2893"},"modified":"2025-04-20T14:53:13","modified_gmt":"2025-04-20T11:23:13","slug":"determine-penetration-of-bitumen","status":"publish","type":"post","link":"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/","title":{"rendered":"How to determine penetration grade of bitumen + comparison"},"content":{"rendered":"<p><span style=\"background-color: #99ccff;\">The <strong><em>hardness or softness of bitumen<\/em><\/strong> is an important characteristic that can be determined by its penetration grade. This trait also affects bitumen&#8217;s resistance under traffic load and at specific temperatures. In simple terms, <strong><em>bitumen penetration grade<\/em><\/strong> indicates how soft or hard a bitumen product is<\/span>. If you would like to learn more about the c<em><strong>oncept of bitumen permeability<\/strong><\/em>, we will provide the necessary explanations for you in this article from <a href=\"https:\/\/iranetrade.com\/\" target=\"_blank\" rel=\"noopener\"><strong><em>Iran E trade<\/em><\/strong><\/a>.<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_74 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<label class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/label>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#Bitumen_penetration_grade\" >Bitumen penetration grade<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#The_relationship_between_bitumen_penetration_grade_and_its_viscosity\" >The relationship between bitumen penetration grade and its viscosity<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#Bitumen_penetration_grade_test_standards\" >Bitumen penetration grade test standards<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#Required_equipment_for_determining_the_permeability_of_bitumen\" >Required equipment for determining the permeability of bitumen<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#Bitumen_penetration_grade_test_Conditions\" >Bitumen penetration grade test Conditions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#Performing_the_test_for_bitumen_penetration_grade\" >Performing the test for bitumen penetration grade<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#Bitumen_penetration_grades_available_in_the_market\" >Bitumen penetration grades available in the market<\/a><\/li><\/ul><\/nav><\/div>\n\n<h2><span class=\"ez-toc-section\" id=\"Bitumen_penetration_grade\"><\/span>Bitumen penetration grade<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<blockquote><p><strong><em>Engineers<\/em> <\/strong>commonly use the bitumen penetration grade index in road construction and the construction industry to choose the appropriate type of bitumen for specific climates. Bitumen products with <strong><em>lower penetration grades<\/em><\/strong> are harder, while those with higher penetration grades are softer.<\/p><\/blockquote>\n<p>Bitumen penetration refers to its softness or hardness. To measure this, experts <strong><em>conduct a test on bitumen<\/em><\/strong> as follows:<\/p>\n<p><strong><em>Technicians<\/em> <\/strong>use a standard needle with a specific weight to penetrate the surface of bitumen at a certain temperature (typically 25 \u00b0C) for a specified period (usually 5 seconds). They then measure the penetration depth of the needle in <strong><em>0.1 mm<\/em><\/strong> and record it as the penetration grade of the bitumen.<\/p>\n<p>For instance, if the needle penetrates the bitumen<strong><em> by 70-tenths of a millimetre<\/em><\/strong> (7 mm) during the test, the penetration grade of the bitumen is recorded as 70.<\/p>\n<p>(For more information refer to the article \u00a0<a href=\"https:\/\/blog.iranetrade.com\/what-is-bitumen\/\" target=\"_blank\" rel=\"noopener\"><strong><em>What is Bitumen<\/em><\/strong><\/a>)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1511 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-1.jpg\" alt=\"Bitumen penetration grade\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-1.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-1-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-1-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-1-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2>Terms and definitions of bitumen penetration grade<\/h2>\n<p>As mentioned before, <strong><em>bitumen with higher penetration grade<\/em><\/strong> is softer and is applicable in cold climates. However, lower bitumen penetration grade is harder and more suitable for warm areas. To better understand the <strong><em>penetration ability of bitumen<\/em><\/strong>, we will explain different terms and definitions related to this concept:<\/p>\n<p>(For more information about price and use bitumen 85\/100, refer to the article\u00a0<a href=\"https:\/\/blog.iranetrade.com\/bitumen-85-100\/\" target=\"_blank\" rel=\"noopener\"><strong><em>bitumen 85\/100<\/em><\/strong><\/a>)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1513 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-2.jpg\" alt=\"definitions of bitumen penetration grade\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-2.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-2-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-2-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-2-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Pure bitumen<\/h3>\n<p><strong><em>Pure bitumen<\/em><\/strong>, also known as <a href=\"https:\/\/blog.iranetrade.com\/natural-bitumen\/\" target=\"_blank\" rel=\"noopener\"><strong><em>natural bitumen<\/em><\/strong><\/a> or bitumen produced from the refinement of crude oil, is obtained directly from petroleum sources and does not require further complex processes for refinement or modification. These <strong><em>high-quality penetration grade bitumen<\/em><\/strong> products have stable physical and chemical properties and are utilized in various industries, including <strong><em>roads and construction<\/em><\/strong>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1515 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-3.jpg\" alt=\"definitions of penetration grade Pure bitumen\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-3.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-3-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-3-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-3-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Coal Tar Bitumen<\/h3>\n<blockquote><p><strong><em>One of the most important terms<\/em><\/strong> to understand is &#8220;penetration grade,&#8221; which specifies the softness or hardness of bitumen. The term &#8220;pure bitumen&#8221; refers to bitumen penetration grade obtained directly from <strong><em>petroleum sources<\/em><\/strong>. On the other hand, coal tar bitumen is obtained from coal distillation and exhibits high resistance to chemicals and water. However, it <strong><em>contains harmful compounds<\/em><\/strong> that can have negative effects on our health.<\/p><\/blockquote>\n<p><strong><em>Coal tar bitumen<\/em><\/strong><\/p>\n<p>is produced through coal distillation, and due to its higher concentration of aromatic compounds, it possesses different properties compared to petroleum bitumen. Because of its high <strong><em>resistance to chemicals and water<\/em><\/strong>, coal tar bitumen is suitable for specific applications such as waterproofing and insulation coatings.<\/p>\n<p>However, the presence of harmful compounds in coal tar bitumen, such as <strong><em>polyaromatics<\/em> <\/strong>(PAHs) is detrimental to human health and the environment. Therefore, this has led to restrictions or bans on the <strong><em>use of coal tar bitumen in some countries<\/em><\/strong>.<\/p>\n<p>(For more information about price and use bitumen 70\/100, refer to the article\u00a0<a href=\"https:\/\/blog.iranetrade.com\/bitumen-70-100\/\" target=\"_blank\" rel=\"noopener\"><strong><em>bitumen 70\/100<\/em><\/strong><\/a>)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1517 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-4.jpg\" alt=\"definitions Coal Tar Bitumen\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-4.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-4-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-4-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-4-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_relationship_between_bitumen_penetration_grade_and_its_viscosity\"><\/span>The relationship between bitumen penetration grade and its viscosity<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3>Low viscosity and high bitumen penetration grade<\/h3>\n<p><strong><em>Bitumen penetration grade products with low viscosity<\/em><\/strong> are typically softer. In addition, the needles in penetration tests sink more easily into them, indicating a higher degree of penetration. These<strong><em> types of bitumen perform better at lower temperatures<\/em><\/strong> because they are more flexible and less prone to cracking.<\/p>\n<p>(For information about <strong>Introduction of Pasargad oil bitumen products<\/strong> , refer to the article <a href=\"https:\/\/blog.iranetrade.com\/pasargad-oil-bitumen\/\" target=\"_blank\" rel=\"noopener\"><em><strong>Pasargad oil bitumen<\/strong><\/em><\/a>)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1519 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-5.jpg\" alt=\"The relationship between bitumen penetration grade and viscosity\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-5.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-5-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-5-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-5-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>High viscosity and low penetration grade<\/h3>\n<blockquote><p>One of the important terminologies in <strong><em>measuring the penetration of bitumen<\/em><\/strong> is the term &#8220;penetration grade,&#8221; which specifies its softness or hardness. The term &#8220;pure bitumen&#8221; refers to bitumen obtained directly from petroleum sources. Also, the term &#8220;coal tar bitumen&#8221; refers to <strong><em>bitumen produced from the distillation of coal<\/em><\/strong>, which has <strong><em>high resistance to chemicals and water<\/em><\/strong>. However, it contains harmful compounds for health.<\/p><\/blockquote>\n<p>Bitumen penetration grade with high viscosity is usually harder, and <strong><em>the needle<\/em><\/strong> will not penetrate very deeply into it. This means they have a lower level of penetration. These types of bitumen are <strong><em>more resistant to deformation at high temperatures<\/em><\/strong> and are more suitable for tropical regions.<\/p>\n<p>The <strong><em>viscosity and penetration of bitumen<\/em><\/strong> are directly related and both indicate its hardness or softness. In general, bitumen with low viscosity has a higher penetration grade (softer), while high-viscosity bitumen has a lower penetration grade (harder). <strong><em>This correlation<\/em><\/strong> helps engineers and professionals choose the right type of bitumen for different climatic conditions and applications.<\/p>\n<p>(For more information about price and use bitumen 40\/50, refer to the article\u00a0<a href=\"https:\/\/blog.iranetrade.com\/bitumen-40-50\/\" target=\"_blank\" rel=\"noopener\"><strong><em>bitumen 40\/50<\/em><\/strong><\/a>)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1521 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-6.jpg\" alt=\"The relationship High viscosity and low penetration grade bitumen\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-6.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-6-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-6-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-6-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Bitumen_penetration_grade_test_standards\"><\/span>Bitumen penetration grade test standards<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The bitumen penetration test is conducted according to <strong><em>specific standards<\/em><\/strong> that have been established to ensure consistent conditions and comparable results. These standards encompass methods, <strong><em>equipment<\/em><\/strong>, and testing conditions. The following are the common standards for testing the grade of bitumen penetration:<\/p>\n<p>(For more information aboutTypes of Bitumen in Road Construction, refer to the article <em><strong><a href=\"https:\/\/iranetrade.com\/blog\/types-of-bitumen-in-road-construction\/\" target=\"_blank\" rel=\"noopener\">Types of Bitumen in Road Construction<\/a>.<\/strong><\/em>)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1523 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-7.jpg\" alt=\"Bitumen penetration grade test standards\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-7.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-7-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-7-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-7-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Testing bitumen softness and its common standards<\/h3>\n<p>When the <strong><em>bitumen penetration grade testing<\/em><\/strong> is conducted at a temperature equal to its softening point, the resulting penetration grade for all bitumen would be 800. This is why a parameter called penetration grade is defined for bitumen.<\/p>\n<p>ASTM D5: &#8220;<em><strong>Standard Test Method for Penetration of Bituminous Materials<\/strong><\/em>&#8221;<br \/>\nAASHTO T49: &#8220;<strong><em>Standard Method of Test for Penetration of Bituminous Materials<\/em><\/strong>&#8221;<br \/>\nEN 1426: &#8220;<strong><em>Bitumen and bituminous binders \u2013 Determination of needle penetration<\/em><\/strong>&#8221;<br \/>\nIS 1203: &#8220;<strong><em>Methods for Testing Tar and Bituminous Materials: Determination of Penetration<\/em><\/strong>&#8221;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1581 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-36.jpg\" alt=\"Testing bitumen softness and its common standards\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-36.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-36-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-36-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-36-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Required_equipment_for_determining_the_permeability_of_bitumen\"><\/span>Required equipment for determining the permeability of bitumen<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The test for grading bitumen penetration aims to determine the <strong><em>relative hardness of pure and air-blown bitumen<\/em><\/strong>. To perform this test, a series of testing equipment is required:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1527 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-9.jpg\" alt=\"Required equipment for determining the permeability of bitumen\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-9.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-9-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-9-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-9-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>The penetrometer<\/h3>\n<p>A <em><strong>penetrometer<\/strong> <\/em>is a device used to measure the penetration of a standard needle in bitumen under certain conditions. The machine has a mechanism to hold the needle and apply weight to it and is equipped with <strong><em>an accurate measurement scale<\/em> <\/strong>to record the grade for bitumen penetration.<\/p>\n<p>(For information about exported bitumen price , refer to the article <a href=\"https:\/\/iranetrade.com\/bitumen-price\" target=\"_blank\" rel=\"noopener\"><strong><em>Bitumen price<\/em><\/strong><\/a>)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1529 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-10.jpg\" alt=\"The penetrometer for determining the permeability of bitumen\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-10.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-10-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-10-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-10-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Penetration needle<\/h3>\n<p>The penetration needle is a standard 1 mm diameter needle with a suitable length. Engineers use it <strong><em>to penetrate bitumen under a specified weight<\/em><\/strong> (100 g) within 5 seconds.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1531 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-11.jpg\" alt=\"Penetration needle for determining the permeability of bitumen\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-11.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-11-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-11-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-11-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>The sample container<\/h3>\n<p>A <em><strong>sample container<\/strong><\/em> is a container engineers use for pouring bitumen samples, with standard dimensions for proper testing.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1533 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-12.jpg\" alt=\"The sample container for determining the permeability of bitumen\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-12.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-12-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-12-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-12-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>The water bath<\/h3>\n<p>A <em><strong>water bath<\/strong><\/em> is for maintaining the bitumen sample at a fixed temperature of 25\u00b0C before and during the test.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1535 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-13.jpg\" alt=\"The water bath for determining the permeability of bitumen\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-13.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-13-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-13-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-13-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Transfer dish<\/h3>\n<p><em><strong>Transfer Dish<\/strong><\/em> is a container that engineers use to transfer bitumen samples to a water bath and maintain them under standard conditions. This process is also effective for testing the <strong><em>degree of bitumen ignition<\/em><\/strong>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1541 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-16.jpg\" alt=\"Transfer dish for determining the permeability of bitumen\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-16.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-16-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-16-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-16-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Thermometers<\/h3>\n<p>Engineers use <strong><em>thermometers<\/em> <\/strong>to measure and control the temperature of the bitumen sample and water bath. They use this device to keep the temperature of the<em><strong> penetration grading test<\/strong><\/em> fixed at 25\u00b0C.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1543 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-17.jpg\" alt=\"Thermometers for determining the permeability of bitumen\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-17.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-17-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-17-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-17-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Bitumen_penetration_grade_test_Conditions\"><\/span>Bitumen penetration grade test Conditions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong><em>Testing Temperature<\/em><\/strong>: 25\u00b0C<br \/>\n<strong><em>Needle Weight<\/em><\/strong>: 100g<br \/>\n<strong><em>Penetration duration<\/em><\/strong>: 5 seconds<br \/>\nKeeping the sample of bitumen grade of penetration in a water bath for at least 1 hour prior to the test<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1545\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-18.jpg\" alt=\"Bitumen penetration grade test Conditions\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-18.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-18-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-18-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-18-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Performing_the_test_for_bitumen_penetration_grade\"><\/span>Performing the test for bitumen penetration grade<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3>Sample preparation<\/h3>\n<p>First, the engineers <em><strong>pour the bitumen sample into the testing container<\/strong><\/em> and the surface is flattened.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1547 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-19.jpg\" alt=\"test for bitumen penetration grade\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-19.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-19-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-19-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-19-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Maintaining the sample at a fixed temperature<\/h3>\n<p>Afterwards, they place the sample in a water bath with <strong><em>a temperature of 25 \u00b0C<\/em> <\/strong>for at least 1 hour.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1549 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-20.jpg\" alt=\"Maintaining the sample at a fixed temperature for test for bitumen penetration grade \" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-20.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-20-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-20-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-20-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Device setup<\/h3>\n<p>The engineers <strong><em>calibrate the penetration meter<\/em><\/strong> for assessing the grade of bitumen penetration and penetrate the surface of bitumen with the needle.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1551 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-21.jpg\" alt=\"Device setup for test for bitumen penetration grade \" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-21.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-21-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-21-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-21-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Applying weight and influence<\/h3>\n<p>The engineers <strong><em>add a standard weight to the needle<\/em><\/strong> for performing the penetration grading test. Then, the needle penetrates the bitumen for 5 seconds.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1553 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-22.jpg\" alt=\"Applying weight and influence for test for bitumen penetration grade \" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-22.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-22-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-22-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-22-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Penetration measurement<\/h3>\n<p>Finally, the engineers measure the<strong><em> penetration depth of the needle in bitume<\/em><\/strong>n and record it in 0.1 mm for penetration grading.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1555 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-23.jpg\" alt=\"Penetration measurement for test for bitumen penetration grade \" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-23.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-23-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-23-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-23-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Results and interpretation of the penetration grade test<\/h3>\n<p>The purpose of the penetration grading test is to determine its hardness or softness. Engineers perform this test to <strong><em>assess bitumen\u2019s resistance against deformation<\/em><\/strong> under specific amounts of pressure at fixed temperatures. Conducting this test aids in <strong><em>selecting the appropriate types of bitumen<\/em><\/strong> for various applications.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1557 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-24.jpg\" alt=\"Results and interpretation of the penetration grade test\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-24.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-24-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-24-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-24-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Bitumen penetration grade and hardening<\/h3>\n<p>The engineers report <strong><em>the measurement results for the bitumen grade of penetration<\/em><\/strong>. For example, the penetration of 70 tenths of mm is recorded as the penetration grade of 70.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1559 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-25.jpg\" alt=\"Bitumen penetration grade and hardening\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-25.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-25-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-25-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-25-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Quality assessment of penetration bitumen<\/h3>\n<blockquote><p><strong><em>Bitumen with a higher penetration grade<\/em><\/strong> is softer and is suitable for cold regions, whereas bitumen with a lower penetration grade is harder and more suitable for tropical regions.<\/p><\/blockquote>\n<p>These standards and methods have been developed to <strong><em>ensure the accuracy of the penetration grade test results<\/em><\/strong> and to help accurately assess and compare its physical properties.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1561 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-26.jpg\" alt=\"Quality assessment of penetration bitumen\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-26.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-26-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-26-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-26-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Bitumen_penetration_grades_available_in_the_market\"><\/span>Bitumen penetration grades available in the market<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>There are<strong><em> various grades of bitumen penetration available in the market<\/em><\/strong>, classified based on their hardness or softness. Below are some examples of these bitumen products and their applications:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1563 size-full\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-27.jpg\" alt=\"Bitumen penetration grades available in the market\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-27.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-27-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-27-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-27-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Bitumen penetration 100\/85<\/h3>\n<p>Definition: <strong><em>Bitumen penetration 100\/85<\/em><\/strong> is a bitumen product with a penetration grade of 8.5 to 10 mm. It has a softening point of 45-52 and will soften in heat and harden in cold temperatures.<\/p>\n<p>Application: This type of bitumen is <strong><em>suitable for use in cold areas<\/em><\/strong> that require softer bitumen to better withstand temperature changes.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1565\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-28.jpg\" alt=\"Bitumen penetration 100\/85\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-28.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-28-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-28-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-28-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Bitumen penetration 100\/80<\/h3>\n<p>Definition: <strong><em>Bitumen with a penetration grade of 80 to 100 mm<\/em><\/strong> is considered a standard penetration bitumen product.<\/p>\n<p>Application: Bitumen penetration 100\/80 is <strong><em>suitable for mild and cold climates<\/em><\/strong> and is commonly used in road construction. Bitumen with a grade of 100\/80 is the best choice for road construction.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1567\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-29.jpg\" alt=\"Bitumen penetration 100\/80\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-29.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-29-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-29-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-29-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Bitumen penetration 100\/70<\/h3>\n<p>Definition: <strong><em>Bitumen with a penetration grade of 70 to 100 mm<\/em><\/strong> is classified as standard bitumen penetration product.<\/p>\n<p>Application: Engineers usually use 100\/70 grade of bitumen penetration in <strong><em>areas with relatively low temperatures and cold weather<\/em><\/strong>. (Generally, stiffer bitumen (with lower penetration grades) is used <strong><em>for tropical regions<\/em><\/strong>, and looser bitumen (with high penetration grades) for cold areas.)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1569\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-30.jpg\" alt=\"Bitumen penetration 100\/70\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-30.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-30-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-30-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/Penetration-Bitumen-30-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>90\/60 bitumen penetration<\/h3>\n<p>Definition: <strong><em>Penetration grade bitumen 90\/60<\/em> <\/strong>refers to semi-hard and heavy bitumen with a permeability grade of 90\/60.<br \/>\nApplication: Suitable for road construction and <strong><em>repair in temperate climates<\/em><\/strong>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1571\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-31.jpg\" alt=\"90\/60 bitumen penetration\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-31.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-31-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-31-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-31-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>70\/60 bitumen penetration<\/h3>\n<p>Definition: <strong><em>Bitumen with a penetration grade of 60-70 millimetres<\/em><\/strong> is known as semi-hard bitumen.<\/p>\n<p>Application: 70\/60 bitumen penetration is suitable for use in tropical areas that require more resistance to heat. This bitumen is also u<strong><em>seful for pasting materials<\/em><\/strong>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1573\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-32.jpg\" alt=\"70\/60 bitumen penetration\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-32.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-32-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-32-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-32-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Bitumen penetration 70\/50<\/h3>\n<p>Definition: Bitumen with a penetration grade of 50-70 mm and a softening point of 49-59 <strong><em>exhibits semi-hard permeability<\/em><\/strong> and is considered a heavy bitumen with thermoplastic properties.<\/p>\n<p>Application: The <em><strong>penetration bitumen 70\/50<\/strong><\/em> is suitable for use in hot weather conditions, as well as for repair, superstructure, and road construction.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1575\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-33.jpg\" alt=\"Bitumen penetration 70\/50\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-33.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-33-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-33-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-33-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Bitumen penetration grade 50\/40<\/h3>\n<p>Definition: <em><strong>Bitumen with a penetration grade of 40-50 millimetres<\/strong><\/em> is relatively hard.<\/p>\n<p>Application: Penetration bitumen 50\/40 is <strong><em>suitable for hot weather and roads<\/em> <\/strong>with heavy traffic loads that require high-flexibility asphalt.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1577\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-34.jpg\" alt=\"Bitumen penetration grade 50\/40\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-34.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-34-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-34-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-34-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>Bitumen penetration grade 60\/40<\/h3>\n<p>Definition: <strong><em>Semi-hard bitumen<\/em> <\/strong>is bitumen with a penetration grade of 40-60 mm.<\/p>\n<p>Bitumen penetration grading and classification are <strong><em>very helpful for selecting bitumen for different weather conditions<\/em><\/strong> and project types.<\/p>\n<p>Application: <strong><em>Bitumen penetration 60\/40<\/em> <\/strong>is more suitable for use in hot weather conditions and for high-traffic roads.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1579\" src=\"https:\/\/blog.iranetrade.com\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-35.jpg\" alt=\"Bitumen penetration grade 60\/40\" width=\"600\" height=\"600\" srcset=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-35.jpg 600w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-35-300x300.jpg 300w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-35-150x150.jpg 150w, https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/06\/Penetration-Bitumen-35-100x100.jpg 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>reference:\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Bitumen\" target=\"_blank\" rel=\"nofollow noopener\"><strong><em>wikipedia<\/em><\/strong><\/a><\/p>\n<p><a class=\"btn-t fixmob-m7 mainbtn-n5 bicn-m7 bxl-m7 js-bprce-n5\" href=\"https:\/\/iranetrade.com\/bitumen-price\">Bitumen Price<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The hardness or softness of bitumen is an important characteristic that can be determined by its penetration grade. This trait also affects bitumen&#8217;s resistance under traffic load and at specific temperatures. In simple terms, bitumen penetration grade indicates how soft or hard a bitumen product is. If you would like to learn more about the [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":523,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2893","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.7 (Yoast SEO v25.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is Penetration Grade Of Bitumen: PG bitumen comparison!<\/title>\n<meta name=\"description\" content=\"determine penetration grade of bitumen - Introduction of different types of Penetration Grade Bitumen and usage on iranetrade weblog\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to determine penetration grade of bitumen + comparison\" \/>\n<meta property=\"og:description\" content=\"determine penetration grade of bitumen - Introduction of different types of Penetration Grade Bitumen and usage on iranetrade weblog\" \/>\n<meta property=\"og:url\" content=\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/\" \/>\n<meta property=\"og:site_name\" content=\"Weblog Iran e trade\" \/>\n<meta property=\"article:published_time\" content=\"2024-06-30T13:47:53+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-04-20T11:23:13+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/what-is-penetration-of-Bitumen.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"672\" \/>\n\t<meta property=\"og:image:height\" content=\"392\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"arnavision SEO team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"arnavision SEO team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"15 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/\",\"url\":\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/\",\"name\":\"What is Penetration Grade Of Bitumen: PG bitumen comparison!\",\"isPartOf\":{\"@id\":\"https:\/\/iranetrade.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/what-is-penetration-of-Bitumen.jpg\",\"datePublished\":\"2024-06-30T13:47:53+00:00\",\"dateModified\":\"2025-04-20T11:23:13+00:00\",\"author\":{\"@id\":\"https:\/\/iranetrade.com\/blog\/#\/schema\/person\/866c5c6c306c8d3be7e67786131d9932\"},\"description\":\"determine penetration grade of bitumen - Introduction of different types of Penetration Grade Bitumen and usage on iranetrade weblog\",\"breadcrumb\":{\"@id\":\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#primaryimage\",\"url\":\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/what-is-penetration-of-Bitumen.jpg\",\"contentUrl\":\"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/what-is-penetration-of-Bitumen.jpg\",\"width\":672,\"height\":392,\"caption\":\"\u062f\u0631\u062c\u0647 \u0646\u0641\u0648\u0630 \u067e\u0630\u06cc\u0631\u06cc \u0642\u06cc\u0631 \u0686\u06cc\u0633\u062a: \u0646\u062d\u0648\u0647 \u062a\u0639\u06cc\u06cc\u0646 \u062f\u0631\u062c\u0647 \u0646\u0641\u0648\u0630 \u067e\u0630\u06cc\u0631\u06cc \u0642\u06cc\u0631 + \u0645\u0642\u0627\u06cc\u0633\u0647\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/iranetrade.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How to determine penetration grade of bitumen + comparison\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/iranetrade.com\/blog\/#website\",\"url\":\"https:\/\/iranetrade.com\/blog\/\",\"name\":\"Weblog Iran e trade\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/iranetrade.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/iranetrade.com\/blog\/#\/schema\/person\/866c5c6c306c8d3be7e67786131d9932\",\"name\":\"arnavision SEO team\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/iranetrade.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/e11e7264a38d48a0f61be013e6c3719b3c1bbc3fd1d3b27741b065c53cce29c5?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/e11e7264a38d48a0f61be013e6c3719b3c1bbc3fd1d3b27741b065c53cce29c5?s=96&d=mm&r=g\",\"caption\":\"arnavision SEO team\"},\"url\":\"https:\/\/iranetrade.com\/blog\/author\/amirhossein\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"What is Penetration Grade Of Bitumen: PG bitumen comparison!","description":"determine penetration grade of bitumen - Introduction of different types of Penetration Grade Bitumen and usage on iranetrade weblog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/","og_locale":"en_US","og_type":"article","og_title":"How to determine penetration grade of bitumen + comparison","og_description":"determine penetration grade of bitumen - Introduction of different types of Penetration Grade Bitumen and usage on iranetrade weblog","og_url":"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/","og_site_name":"Weblog Iran e trade","article_published_time":"2024-06-30T13:47:53+00:00","article_modified_time":"2025-04-20T11:23:13+00:00","og_image":[{"width":672,"height":392,"url":"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/what-is-penetration-of-Bitumen.jpg","type":"image\/jpeg"}],"author":"arnavision SEO team","twitter_card":"summary_large_image","twitter_misc":{"Written by":"arnavision SEO team","Est. reading time":"15 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/","url":"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/","name":"What is Penetration Grade Of Bitumen: PG bitumen comparison!","isPartOf":{"@id":"https:\/\/iranetrade.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#primaryimage"},"image":{"@id":"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#primaryimage"},"thumbnailUrl":"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/what-is-penetration-of-Bitumen.jpg","datePublished":"2024-06-30T13:47:53+00:00","dateModified":"2025-04-20T11:23:13+00:00","author":{"@id":"https:\/\/iranetrade.com\/blog\/#\/schema\/person\/866c5c6c306c8d3be7e67786131d9932"},"description":"determine penetration grade of bitumen - Introduction of different types of Penetration Grade Bitumen and usage on iranetrade weblog","breadcrumb":{"@id":"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#primaryimage","url":"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/what-is-penetration-of-Bitumen.jpg","contentUrl":"https:\/\/iranetrade.com\/blog\/wp-content\/uploads\/2024\/05\/what-is-penetration-of-Bitumen.jpg","width":672,"height":392,"caption":"\u062f\u0631\u062c\u0647 \u0646\u0641\u0648\u0630 \u067e\u0630\u06cc\u0631\u06cc \u0642\u06cc\u0631 \u0686\u06cc\u0633\u062a: \u0646\u062d\u0648\u0647 \u062a\u0639\u06cc\u06cc\u0646 \u062f\u0631\u062c\u0647 \u0646\u0641\u0648\u0630 \u067e\u0630\u06cc\u0631\u06cc \u0642\u06cc\u0631 + \u0645\u0642\u0627\u06cc\u0633\u0647"},{"@type":"BreadcrumbList","@id":"https:\/\/iranetrade.com\/blog\/determine-penetration-grade-of-bitumen\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/iranetrade.com\/blog\/"},{"@type":"ListItem","position":2,"name":"How to determine penetration grade of bitumen + comparison"}]},{"@type":"WebSite","@id":"https:\/\/iranetrade.com\/blog\/#website","url":"https:\/\/iranetrade.com\/blog\/","name":"Weblog Iran e trade","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/iranetrade.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/iranetrade.com\/blog\/#\/schema\/person\/866c5c6c306c8d3be7e67786131d9932","name":"arnavision SEO team","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/iranetrade.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/e11e7264a38d48a0f61be013e6c3719b3c1bbc3fd1d3b27741b065c53cce29c5?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/e11e7264a38d48a0f61be013e6c3719b3c1bbc3fd1d3b27741b065c53cce29c5?s=96&d=mm&r=g","caption":"arnavision SEO team"},"url":"https:\/\/iranetrade.com\/blog\/author\/amirhossein\/"}]}},"views":411,"_links":{"self":[{"href":"https:\/\/iranetrade.com\/blog\/wp-json\/wp\/v2\/posts\/2893","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iranetrade.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iranetrade.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iranetrade.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/iranetrade.com\/blog\/wp-json\/wp\/v2\/comments?post=2893"}],"version-history":[{"count":9,"href":"https:\/\/iranetrade.com\/blog\/wp-json\/wp\/v2\/posts\/2893\/revisions"}],"predecessor-version":[{"id":4271,"href":"https:\/\/iranetrade.com\/blog\/wp-json\/wp\/v2\/posts\/2893\/revisions\/4271"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iranetrade.com\/blog\/wp-json\/wp\/v2\/media\/523"}],"wp:attachment":[{"href":"https:\/\/iranetrade.com\/blog\/wp-json\/wp\/v2\/media?parent=2893"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iranetrade.com\/blog\/wp-json\/wp\/v2\/categories?post=2893"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iranetrade.com\/blog\/wp-json\/wp\/v2\/tags?post=2893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}