Hardened Air Void Analysis (C457)

This test method describes procedures for microscopical determinations of the air content of hardened concrete and of the specific surface, void frequency, spacing factor, and paste-air ratio of the air-void system in hardened concrete

We perform the linear-traverse method to determine the hardened air system.

This test method is based on prescribed procedures that are applied to sawed and lapped sections of specimens of concrete from the field or laboratory.