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RS ASTM C231/C231M-26
Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
Abstract

1.1 This test method covers determination of the air content
of freshly mixed concrete from observation of the change in
volume of concrete with a change in pressure.
1.2 This test method is intended for use with concretes and
mortars made with relatively dense aggregates for which the
aggregate correction factor can be satisfactorily determined by
the technique described in Section 6. It is not applicable to
concretes made with lightweight aggregates, air-cooled blast-
furnace slag, or aggregates of high porosity. In these cases, Test
Method C173/C173M should be used. This test method is also
not applicable to nonplastic concrete such as is commonly used
in the manufacture of pipe and concrete masonry units.
1.3 The text of this test method references notes and
footnotes that provide explanatory information. These notes
and footnotes (excluding those in tables and figures) shall not
be considered as requirements of this standard.

General Information

CodeClassificationThemePagesPublisherAvailability
RS ASTM C231/C231M-26ADOPTED ASTM STANDARDSCivil engineering112026 Version
Jul 2026		Available
Price: RWF 15,000


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