{"id":4654,"date":"2026-06-23T17:50:57","date_gmt":"2026-06-23T09:50:57","guid":{"rendered":"https:\/\/www.nlscientific.com\/los-angeles-abrasion-test-astm-c131-c535\/"},"modified":"2026-06-23T17:50:57","modified_gmt":"2026-06-23T09:50:57","slug":"los-angeles-abrasion-test-astm-c131-c535","status":"publish","type":"post","link":"https:\/\/www.nlscientific.com\/en_ph\/los-angeles-abrasion-test-astm-c131-c535\/","title":{"rendered":"Los Angeles Abrasion Test (ASTM C131 \/ C535): Method, Apparatus &#038; Limits"},"content":{"rendered":"<p>The <strong>Los Angeles abrasion test<\/strong> measures the resistance of coarse aggregate to degradation by abrasion and impact, a key durability indicator for aggregates used in concrete, asphalt and road base.<\/p>\n<h2>What the Test Measures<\/h2>\n<p>The test simulates the combined wear of abrasion, impact and grinding that aggregate experiences in service. A lower percentage loss means a harder, more durable aggregate. Soft aggregate that breaks down leads to rutting in asphalt and loss of strength in concrete.<\/p>\n<h2>Apparatus Required<\/h2>\n<ul>\n<li>Los Angeles abrasion machine with rotating steel drum and shelf<\/li>\n<li>Charge of standard steel spheres (number set by grading A\u2013G)<\/li>\n<li>Set of test sieves including the 1.70 mm sieve<\/li>\n<li>Balance and drying oven<\/li>\n<\/ul>\n<p>NL Scientific manufactures the <a href=\"https:\/\/www.nlscientific.com\/en_ph\/product\/los-angeles-resistance-abrasion-apparatus\/\">Los Angeles Resistance Abrasion Apparatus<\/a> and the full <a href=\"https:\/\/www.nlscientific.com\/en_ph\/product-category\/aggregate-rock\/\">aggregate &#038; rock testing range<\/a>, built to ASTM, EN, BS and AASHTO requirements with ISO\/IEC 17025 accredited calibration.<\/p>\n<h2>Test Procedure<\/h2>\n<ol>\n<li>Select the grading (A\u2013G) matching the aggregate size and weigh the washed, oven-dried sample (typically 5000 g).<\/li>\n<li>Place the sample and the specified number of steel spheres in the drum.<\/li>\n<li>Rotate the drum at 30\u201333 rpm for 500 revolutions (1000 for ASTM C535 large-size aggregate).<\/li>\n<li>Discharge the material and sieve on the 1.70 mm sieve.<\/li>\n<li>Wash and oven-dry the material retained on the 1.70 mm sieve and weigh it.<\/li>\n<\/ol>\n<h2>Calculation &amp; Reporting<\/h2>\n<p><strong>Percent loss = ((Original mass &minus; Retained mass) &divide; Original mass) &times; 100<\/strong>. Report the loss to the nearest whole percent.<\/p>\n<h2>Acceptance Criteria<\/h2>\n<p>Many specifications limit Los Angeles abrasion loss to a maximum of 30\u201340% for surface course and base aggregates, with stricter limits for premium wearing courses. Always refer to your project or road-authority specification for the exact limit.<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<h3>What is the difference between ASTM C131 and C535?<\/h3>\n<p>ASTM C131 covers aggregate smaller than 37.5 mm using 500 revolutions; ASTM C535 covers larger aggregate using 1000 revolutions. NL Scientific equipment complies with both.<\/p>\n<h3>Why are steel spheres used?<\/h3>\n<p>The steel charge delivers the impact and abrasive action; the number of spheres is fixed by the grading so results are repeatable and comparable between laboratories.<\/p>\n<p><em>Need the right equipment for your laboratory?<\/em> <a href=\"https:\/\/www.nlscientific.com\/en_ph\/contact-us\/\">Contact NL Scientific for a quotation<\/a> &mdash; Asia&#8217;s leading manufacturer of civil engineering and material testing equipment, shipping worldwide.<\/p>","protected":false},"excerpt":{"rendered":"<p>A complete guide to the Los Angeles abrasion test (ASTM C131 \/ C535): apparatus, steel charge, procedure, percent-loss calculation and acceptance limits.<\/p>","protected":false},"author":1,"featured_media":3710,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"rank_math_lock_modified_date":false,"footnotes":""},"categories":[164],"tags":[],"class_list":["post-4654","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/posts\/4654","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/comments?post=4654"}],"version-history":[{"count":0,"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/posts\/4654\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/media\/3710"}],"wp:attachment":[{"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/media?parent=4654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/categories?post=4654"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/tags?post=4654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}