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ASTM C191-13
- Standard Test Methods for Time of Setting of Hydraulic Cement by Vicat Needle
- standard by ASTM International, 12/01/2013
- Publisher: ASTM
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1.1 These test methods determine the time of setting of hydraulic cement by means of the Vicat 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.