With the desired long open time for post-tension grouts, we use an Automatic Vicat Apparatus to get a more accurate and precise set time when testing US SPEC NA-100 and US SPEC NA Grout. Also, PTI M55.1-12 specification calls for set time to be tested in accordance with ASTM C953 Standard Test Method for Time of Setting of Grouts for Preplaced-Aggregate Concrete in the Laboratory.
NA-100 NA Grout