Standard Method of Test for
Time of Setting of Hydraulic
Cement by Vicat Needle
AASHTO Designation: T 131-08
ASTM Designation:C 191-04b
1.1.These test methods determine the time of setting of hydraulic cement by means of the Vicat j
needle. Two test methods are given; Method A is the Reference Test Method using the manually
operated standard Vicat apparatus, while Method B permits the use of an automatic Vicat machine that has, in accordance with the qualification requirements of this method, demonstrated acceptable performance.
1.2.The values stated in SI units are to be regarded as the standard. Values in parentheses are for information only.
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