The American Road & Transportation Builders Association
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AASHTO T 53-2011
AASHTO T 53-2011 history
2011AASHTO T 53-2011 Standard Method of Test for Softening Point of Bitumen (Ring-and-Ball Apparatus)
2008AASHTO T 53-2008 Standard Method of Test for Softening Point of Bitumen (Ring-and-Ball Apparatus)
0000 AASHTO T 53-2006
1996AASHTO T 53-1996 Standard Method of Test for Softening Point of Bitumen (Ring-and-Ball Apparatus) HM-22; Part IIA; ASTM Designation D 36-95 R(2000)