ASTM C642-06

1.1 This test method covers the determinations of specific gravity, percent absorption, and percent voids in hardened concrete.

1.2 The text of this method references notes and footnotes which provide explanatory information. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this standard.

This test method is useful in developing the data required for conversions between mass and volume for concrete. It can be used to determine conformance with specifications for concrete and to show differences from place to place within a mass of concrete.