ASTM C939 − 10 Standard Test Method for Flow of Grout for Preplaced Aggregate Concrete Flow Cone Method

ASTM C939 − 10 Standard Test Method for Flow of Grout for Preplaced Aggregate Concrete Flow Cone Method

Scope
1.1 This test method covers a procedure, used both in the laboratory and in the field, for determining the time of efflux of a specified volume of fluid hydraulic cement grout through a standardized flow cone and used for preplaced-aggregate (PA) concrete; however, the test method may also be used for other fluid grouts.

1.2 It is for use with neat grout and with grouts containing fine aggregate all passing a 2.36-mm (No. 8) sieve.

1.3 This test method is intended for use with grout having an efflux time of 35 s or less.
1.4 When efflux time exceeds 35 s, flowability is better determined by flow table, found in Test Method C109/C109M, using 5 drops in 3 s.

1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only

ASTM C939 − 10 Standard Test Method for Flow of Grout for Preplaced Aggregate Concrete Flow Cone Method

Significance and Use
5.1 This test method is useful for determining the expansion and bleeding characteristics of freshly mixed fluid hydraulic cement grout commonly used in PA concrete and cementitious post-tensioning tendon grouts.