Standard
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AS 1012.4.2:2014
[Current]This Standard sets out the method for determining the air content of freshly mixed concrete from observations of the reduction in air pressure in a chamber above the concrete when the concrete is exposed to the air pressure.
Published: 04/04/2014
Pages: 7
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
1 Scope
2 Referenced documents
3 Principle
4 Apparatus
4.1 Pressure-type air meter with pressure gauge to read air content
4.1.1 General
4.1.2 Measuring bowl
4.1.3 Cover assembly
4.2 Other apparatus
5 Sampling
6 General procedure
7 Procedure for determining air content
8 Calculation of air content
9 Determination of aggregate correction factor
10 Records
11 Report
Appendix A
A1 Introduction
A2 Principle
A3 Calibration of calibration cylinder and measuring bowl
A4 Calibration check on pressure gauge reading
Cited references in this standard
[Current]
Methods of testing concrete, Method 2: Preparing concrete mixes in the laboratory
[Current]
Methods of testing concrete, Method 4.1: Determination of air content of freshly mixed concrete — Measuring reduction in concrete volume with increased air pressure
[Current]
Methods of testing concrete, Method 4.3: Determination of air content of freshly mixed concrete — Measuring air volume when concrete is dispersed in water