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Design of Normal Concrete Mixes Design of Normal Concrete Mixes

Design of normal concrete mixes
Second edition

 

Foreword
1 Introduction
1.1 Principles of proposed method
1.2 Basic concepts
 

Part one: Background information
2 The workability of concrete
2.1 Measurement of workability
2.2 Water content
2.3 Type and strength class of cement
3 The compressive strength of concrete
3.1 Age at test and curing conditions
3.2 Type and strength class of cement
3.3 Cement strength variation
3.4 Aggregate type and grading
3.5 Relationship between compressive strength and free-water/cement ratio
3.6 Type of mixing
4 Variability of concrete strength during production
4.1 Factors contributing to the overall variation
4.2 The distribution of results
4.3 Characteristic strength
4.4 Margin for mix design

Part two: The mix design process
5 Flow chart of procedures
5.1 Selection of target water/cement ratio (Stage
5.2 Selection of free-water content (Stage
5.3 Determination of cement content (Stage
5.4 Determination of total aggregate content (Stage
5.5 Selection of fine and coarse aggregate contents (Stage
6 Trial mixes
6.1 Production of trial mixes
6.2 Tests on trial mixes
6.3 Adjustments to mix proportions

7 Examples of mix design
7.1 Example 1: unrestricted design
7.2 Example 2: mix restricted by maximum water/cement ratio
7.3 Example 3: mix restricted by minimum cement content
7.4 Example 4: mix restricted by maximum cement content

Part three: Modifications to mix design method
8 Design of air-entrained mixes
8.1 Effect of entrained air on strength
8.2 Effect of entrained air on workability
8.3 Density of air-entrained mixes
8.4 Modifications to the design process
8.5 Trial mixes of air-entrained concrete
8.6 Example of mix design
9 Design of Portland cement/pfa mixes
9.1 Introduction to pulverised-fuel ash (pfa)
9.2 Changes to the background information
9.3 Modifications to the mix design method
9.4 Example of mix design
9.5 Use of Portland pulverised-fuel ash cement
10 Design of Portland cement/ggbs mixes
10.1 Introduction to ground granulated blastfurnace slag (ggbs)
10.2 Information on Portland cement/ggbs concrete
10.3 Advice on methods of mix design for Portland cement/ggbs concrete
References

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