ASTM C231/C231M-17a
Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method

Standard No.

ASTM C231/C231M-17a

Release Date

2017

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM C231/C231M-22

Latest

ASTM C231/C231M-24

Scope

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 blastfurnace 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. 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. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.2 ) 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM C231/C231M-17a Referenced Document

• ASTM C138/C138M Standard Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete*， 2023-08-01 Update
• ASTM C143/C143M Standard Test Method for Slump of Hydraulic-Cement Concrete*， 2020-06-01 Update
• ASTM C172/C172M Standard Practice for Sampling Freshly Mixed Concrete*， 2024-04-21 Update
• ASTM C173/C173M Standard Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method*， 2024-01-01 Update
• ASTM C192/C192M Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory*， 2019-12-01 Update
• ASTM C31/C31M Standard Practice for Making and Curing Concrete Test Specimens in the Field*， 2024-04-01 Update
• ASTM C670 Standard Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials

ASTM C231/C231M-17a history

• 2024 ASTM C231/C231M-24 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2022 ASTM C231/C231M-22 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2017 ASTM C231/C231M-17a Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2017 ASTM C231/C231M-17 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2014 ASTM C231/C231M-14 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2010 ASTM C231/C231M-10 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2009 ASTM C231/C231M-09b Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2009 ASTM C231-09a Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2009 ASTM C231-09 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2008 ASTM C231-08c Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2008 ASTM C231-08b Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2008 ASTM C231-08a Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2008 ASTM C231-08 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2004 ASTM C231-04 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 2003 ASTM C231-03 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• 1997 ASTM C231-97e1 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method