Softening Point of Bitumen
(Ring-and-Ball Apparatus)
AASHTO Designation: T 53-08
ASTM Designation: D 36-06
AASHTO T 53-08 is identical to ASTM D 36-06 except for the following provisions:
1.Replace all references to the ASTM standards listed in the following table with the corresponding AASHTO standard:
Referenced Standards
ASTM AASHTO
D 92 T 48
D 140 T40
2.Add the following reference to Section 2.1:
E 644, Test Methods for Testing Industrial Resistance Thermometers
3.Replace Section 5.2 with the following:
Pouring Plate-A flat, smooth brass plate.
4.Add an additional subsection to Section 5.7 that reads as follows:
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