Standard
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AS 1012.4.2:2014
[Current]Methods of testing concrete, Method 4.2: Determination of air content of freshly mixed concrete — Measuring reduction in air pressure in chamber above concrete
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 4.3: Determination of air content of freshly mixed concrete — Measuring air volume when concrete is dispersed in water
[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 2: Preparing concrete mixes in the laboratory
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