ASTM C457/C457M-23
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- Standard No.
- ASTM C457/C457M-23
- Release Date
- 2023
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM C457/C457M-23a
- Latest
- ASTM C457/C457M-23a
- Scope
- 1.1 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 pasteair ratio of the air-void system in hardened concrete. Three procedures are described: 1.1.1 Procedure A—Linear-traverse method. 1.1.2 Procedure B—Modified point-count method. 1.1.3 Procedure C—Contrast enhanced method. 1.2 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. 1.3 It is intended to outline the principles of this test method and to establish standards for its adequate performance but not to describe in detail all the possible variations that might be used to accomplish the objectives of this test method. 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 are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements see Note 9 and Note 12. 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 C457/C457M-23 Referenced Document
- ASTM C125 Standard Terminology Relating to Concrete and Concrete Aggregates
- ASTM C138/C138M Standard Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete*， 2023-08-01 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
- ASTM C231/C231M Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method*， 2024-01-01 Update
- ASTM C42/C42M Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete
- ASTM C666/C666M Standard Test Method for Resistance of Concrete to Rapid Freezing and Thawing*， 2024-04-21 Update
- ASTM C670 Standard Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
- ASTM C672/C672M Standard Test Method for Scaling Resistance of Concrete Surfaces Exposed to Deicing Chemicals
- ASTM C823/C823M Standard Practice for Examination and Sampling of Hardened
Concrete in Constructions*， 2024-04-21 Update - ASTM C856 Standard Practice for Petrographic Examination of Hardened Concrete
- ASTM D92 Standard Test Method for Flash and Fire Points by Cleveland Open Cup
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM C457/C457M-23 history
- 2024 ASTM C457/C457M-23a Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 2023 ASTM C457/C457M-23 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 2016 ASTM C457/C457M-16 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 2012 ASTM C457/C457M-12 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 2011 ASTM C457/C457M-11 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 2010 ASTM C457/C457M-10a Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 2010 ASTM C457/C457M-10 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 2009 ASTM C457-09 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 2008 ASTM C457-08d Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 2008 ASTM C457-08c Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 2008 ASTM C457-08b Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 2008 ASTM C457-08a Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 2008 ASTM C457-08 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 2006 ASTM C457-06 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
- 1998 ASTM C457-98 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
