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AASHTO T 53-09 (2013)
- Standard Method of Test for Softening Point of Bitumen (Ring-and-Ball Apparatus), (ASTM Designation: D 36-06)
- standard by American Association of State and Highway Transportation Officials, 2009
- Publisher: AASHTO
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AASHTO T 53-09 is identical to ASTM D 36-06 except as noted in this document.