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AS 1478.1-2000


Chemical admixtures for concrete, mortar and grout, Part 1: Admixtures for concrete

Sets out the requirements for chemical admixtures to be added to concrete mixes incorporating portland and blended cements.
Published: 04/10/2000
Pages: 47
Table of contents
Cited references
Content history
Table of contents
About this publication
1 Scope and general
1.1 Scope
1.2 Application
1.3 Referenced documents
1.4 Definitions
1.5 Types and symbols
1.6 Packaging
1.7 Information to be supplied
1.8 Marking
2 Properties of admixtures
2.1 Admixtures other than air-entraining admixtures
2.1.1 General acceptance testing
2.1.2 Requirements
2.1.3 Uniformity testing
2.2 Air-entraining admixtures
2.2.1 General acceptance testing
2.2.2 Requirements
2.2.3 Uniformity testing
3 General test requirements
3.1 Scope of section
3.2 General acceptance tests
3.2.1 General
3.2.2 Cement
3.2.3 Aggregates General Coarse aggregates Fine aggregates
3.2.4 Reference air-entraining admixture
3.3 Specific acceptance tests for admixtures
3.4 Concrete mixes for general acceptance tests
3.4.1 Number of batches and specimens
3.4.2 Proportioning of concrete mixes Method Cement content Water content and slump Addition of admixture
3.4.3 Dose rate of admixture
4 Test methods
4.1 Scope of section
4.2 Preparation of test specimens
4.3 Test methods
4.3.1 Tests on freshly mixed concrete
4.3.2 Tests on hardened concrete
4.4 Test report
Appendix A
A1 Scope
A2 Sample size and representation
A3 Acceptance testing sample
A4 Uniformity testing sample
A5 Sampling liquid admixtures
A5.1 Sampling at point of manufacture
A5.2 Sampling at point of delivery
A6 Sampling solid (powder) admixtures
A7 Packaging and storage of samples
A8 Mixing and preparation of composite samples
A9 Identification
Appendix B
B1 Scope
B2 Descriptions and types of admixture
B2.1 Admixture
B2.2 Air-entraining admixture (Type AEA)
B2.3 Water-reducing admixture (Type WR)
B2.4 Set-retarding admixture (Type Re)
B2.5 Set-accelerating admixture (Type Ac)
B2.6 Water-reducing and set-retarding admixture (Type WRRe)
B2.7 Water-reducing and set-accelerating admixture (Type WRAc)
B2.8 High range water-reducing admixture (Type HWR)
B2.9 High range water-reducing and set-retarding admixture (Type HWRRe)
B2.10 Medium-range, water-reducing admixture (Type MWR)
B2.11 Special purpose normal-setting admixture (Type SN)
B2.12 Special purpose set-retarding admixture (Type SRe)
B2.13 Special purpose set-accelerating admixture (Type SAc)
B3 Use of admixtures
B4 Classes of admixture
B5 Action of admixtures
B5.1 General
B5.2 Effect of different cements
B5.3 Importance of mixing sequence
B5.4 Effects of temperature
B5.5 Effects of overdoses
B5.6 Storage
B5.7 Effect of batch size and mixing action
B5.8 Steam curing
B5.9 Compatibility of admixtures
B5.10 Volume change
B5.11 Durability of concrete
B6 Air-entraining admixtures
B7 Water-reducing and set-controlling admixtures
B8 High range water-reducing and set-controlling admixtures
B8.1 Applications
B8.2 General characteristics
B8.3 Formwork
B8.4 Placing
B8.5 Compaction
B8.6 High range water reduction
B9 Set-accelerating admixtures
B9.1 General
B9.2 Principal effects on concrete
B9.3 Use of calcium chloride
B9.3.1 General
B9.3.2 Principal effects on concrete
B9.3.3 Applications
B9.3.4 Limitations
B9.4 Cold weather concreting
B10 Mid-range water-reducing admixtures
B11 Special purpose admixtures
B11.1 General
B11.2 Types of special purpose admixtures
B11.2.1 General
B11.2.2 Shrinkage-reducing admixtures (SRA)
B11.2.3 Corrosion control admixtures
B11.2.4 Anti-washout admixtures (AWA)
B11.2.5 Hydration control admixtures
B11.2.6 Alkali-silica reactivity admixtures (ASR)
B11.2.7 Internal curing admixtures
B12 Testing of admixtures for general acceptance and uniformity
B13 Further information
Appendix C
C1 Scope
C2 Apparatus
C3 Selective ion electrode method
C3.1 Application
C3.2 Principle
C3.3 Reagents
C3.4 Procedure
C3.5 Calculation
C4 Potentiometric method
C4.1 Application
C4.2 Principle
C4.3 Reagents
C4.4 Procedure
C4.5 Calculation
C5 Records
Appendix D
D1 Scope
D2 Description
D2.1 Thickening admixture
D3 Classes
D4 Methods of using thickening admixtures
D5 Effects on properties of fresh and hardened mixtures
D6 Use of thickening admixtures
D7 Testing
Appendix E
E1 Scope
E2 Description
E2.1 Shrinkage-reducing admixture
E2.2 Shrinkage-compensating admixture
E3 Uses
E4 Types of shrinkage-reducing admixtures
E5 Types of shrinkage-compensating admixtures
E5.1 Gas generating admixtures
E5.1.1 Aluminium powder
E5.1.2 Ammonium salt
E5.1.3 References
E5.2 Admixtures that modify the cement hydration process
E5.3 Lime-based admixtures
E5.4 Additional information
Appendix F
F1 Scope
F2 Use of terms
F3 Description
F3.1 Permeability-reducing admixture
F4 Classes
F5 Use of admixtures
F6 Moisture transmission
F6.1 General
F6.2 Moisture transmission through slabs
F7 Effects on other properties of concrete
F7.1 User to determine
F7.2 Results of side effect
F8 Production of low-permeability concrete
F8.1 Permeability-reducing admixtures
F8.2 Cementitious materials
F8.3 Aggregate
F8.4 Shrinkage and temperature movements
F8.5 Placement of concrete
F8.6 Curing
Cited references in this standard
Aggregates and rock for engineering purposes, Part 1: Concrete aggregates
Specification for test sieves
Specification and Supply of concrete
Verification and use of volumetric apparatus, Part 1: General — Volumetric glassware
Methods of testing portland, blended and masonry cements, Method 2: Chemical composition
Content history
DR 98465
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