ASTM C827/C827M − 10 Standard Test Method for Change in Height at Early Ages of Cylindrical Specimens of Cementitious Mixtures

ASTM C827/C827M − 10 Standard Test Method for Change in Height at Early Ages of Cylindrical Specimens of Cementitious Mixtures

Scope
1.1 This test method covers the determination of change in height of cylindrical specimens from the time of molding until the mixture is hard.

1.2 This test method covers height change measurements at early ages for cementitious mixtures of paste, grout, mortar, and concrete.

1.3 This test method is intended for determination of changes in height that occur from the time of placement until the specimen is fully hard.

These include shrinkage or expansion due to hydration, settlement, evaporation, and other physical and chemical effects.

1.4 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.

ASTM C827/C827M − 10 Standard Test Method for Change in Height at Early Ages of Cylindrical Specimens of Cementitious Mixtures

Significance and Use
4.1 This test method provides a means for comparing the relative shrinkage or expansion of cementitious mixtures.

It is particularly applicable to grouting, patching, and form-filling operations where the objective is to completely fill a cavity or other defined space with a freshly mixed cementitious mixture that will continue to fill the same space at time of hardening.