ASTM C 191 - 08 Standard Test Methods for Time of Setting of Hydraulic Cement by Vicat Needle

American Society for Testing and Materials (ASTM). Current edition approved June 1, 2008. Published July 2008. 8 p. 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