ASTM C878/C878M − 14a Standard Test Method for Restrained Expansion of Shrinkage Compensating Concrete

ASTM C878/C878M − 14a Standard Test Method for Restrained Expansion of Shrinkage Compensating Concrete

Scope
1.1 This test method covers the determination of the expansion of concrete made with shrinkage-compensating cement.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard.

The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use.

ASTM C878/C878M − 14a Standard Test Method for Restrained Expansion of Shrinkage Compensating Concrete

Significance and Use
4.1 Since the potential for expansion, under conditions of controlled restraint, of concrete made with shrinkage compensating cement cannot always be satisfactorily predicted from tests of mortars made in accordance with Test Method C806, a need has been recognized for a test method in which concrete specimens are tested.

4.2 This test method can also be adapted readily to studies of expansion involving degrees of restraint, comparisons of cements, effects of cement contents, mixture proportions, schedules, or environmental treatments that differ from the standard procedures prescribed by this test method.