{"id":4658,"date":"2026-06-23T17:51:27","date_gmt":"2026-06-23T09:51:27","guid":{"rendered":"https:\/\/www.nlscientific.com\/marshall-stability-test-astm-d6927\/"},"modified":"2026-06-23T17:51:27","modified_gmt":"2026-06-23T09:51:27","slug":"marshall-stability-test-astm-d6927","status":"publish","type":"post","link":"https:\/\/www.nlscientific.com\/en_ph\/marshall-stability-test-astm-d6927\/","title":{"rendered":"Marshall Stability Test (ASTM D6927): Method, Apparatus &#038; Criteria"},"content":{"rendered":"<p>The <strong>Marshall stability test<\/strong> is the classic method for designing and checking asphalt (bituminous) mixtures, measuring the maximum load a compacted specimen carries and its deformation at failure.<\/p>\n<h2>What the Test Measures<\/h2>\n<p>Stability is the peak load a 101.6 mm Marshall specimen resists at 60\u00b0C; flow is the deformation at that peak. Together with density and air-void analysis they define the optimum bitumen content of an asphalt mix.<\/p>\n<h2>Apparatus Required<\/h2>\n<ul>\n<li>Marshall stability testing machine with breaking head and loading at 50 mm\/min<\/li>\n<li>Water bath at 60\u00b0C<\/li>\n<li>Marshall compaction hammer and moulds<\/li>\n<li>Load and flow measurement (proving ring\/load cell and flow meter)<\/li>\n<\/ul>\n<p>NL Scientific manufactures the <a href=\"https:\/\/www.nlscientific.com\/en_ph\/product\/digimatic-marshall-stability-compression-tester-50kn-e-version\/\">Digimatic Marshall Stability Compression Tester 50kN<\/a> and the full <a href=\"https:\/\/www.nlscientific.com\/en_ph\/product-category\/bitumen-asphalt\/\">bitumen &#038; asphalt 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>Compact specimens to the required number of blows and determine bulk density.<\/li>\n<li>Condition specimens in the 60\u00b0C water bath for 30\u201340 minutes.<\/li>\n<li>Place the specimen in the breaking head and seat it in the machine.<\/li>\n<li>Apply load at 50 mm\/min until the maximum load is reached.<\/li>\n<li>Record the peak load (stability) and the corresponding flow.<\/li>\n<\/ol>\n<h2>Calculation &amp; Reporting<\/h2>\n<p>Report <strong>stability<\/strong> (kN, corrected for specimen thickness) and <strong>flow<\/strong> (mm or 0.25 mm units). Plot stability, flow, density and voids against bitumen content to select the optimum binder content.<\/p>\n<h2>Acceptance Criteria<\/h2>\n<p>Minimum stability and a flow range are set by the specification (for example, minimum stability values for heavy traffic with flow typically 2\u20134 mm). Refer to the governing asphalt mix-design specification.<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<h3>What does a high flow value indicate?<\/h3>\n<p>Excessive flow indicates a mix that is too soft or over-bitumen, prone to rutting. Low flow with low stability suggests a brittle mix.<\/p>\n<h3>Is Marshall still used with Superpave available?<\/h3>\n<p>Yes. Marshall mix design remains widely specified, especially outside North America, and is valuable for routine QC of asphalt plants.<\/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>The Marshall stability and flow test to ASTM D6927: apparatus, procedure, stability\/flow measurement and mix-design criteria.<\/p>","protected":false},"author":1,"featured_media":3766,"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-4658","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\/4658","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=4658"}],"version-history":[{"count":0,"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/posts\/4658\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/media\/3766"}],"wp:attachment":[{"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/media?parent=4658"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/categories?post=4658"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nlscientific.com\/en_ph\/wp-json\/wp\/v2\/tags?post=4658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}