ACI 212.4 : 1993(R1998)

Chapter 1 General Information
1.1 Introduction
1.2 Specifications
Chapter 2 Uses for high-range water-reducing admixtures
2.1 General uses
2.2 Increased slump
2.3 Decreased water-cementitious ratio
2.4 Decreased water and cement contents
Chapter 3 Effects on freshly mixed concrete
3.1 General
3.2 Slump
3.3 Time of setting
3.4 Air entrainment
3.5 Segregation
3.6 Bleeding
3.7 Pumpability
Chapter 4 Effects on hardened concrete
4.1 Compressive strength
4.2 Tensile strength and modulus of elasticity
4.3 Bond to reinforcement
4.4 Temperature rise
4.5 Drying shrinkage and creep
4.6 Frost resistance
4.7 Durability
Chapter 5 Typical applications of high-range water-reducing
          admixtures
5.1 General
5.2 High-strength concrete
5.3 Prestressed concrete
5.4 Architectural concrete
5.5 Parking Structures
5.6 Rapid-cycle high rise projects
5.7 Industrial slabs
5.8 Massive concrete
Chapter 6 Quality control
6.1 Introduction
6.2 Slump control
6.3 Redosing to recover lost slump
6.4 Placement of flowing concrete
Chapter 7 References
7.1 Selected and recommended references
7.2 Cited references

Covers use of high-range water-reducing admixtures the use of which is increasing in the concrete industry. Admixtures are used to improve the workability without the addition of excessive water, they also substantially improve the strength. Provides information on applications, uses, and effects on freshly mixed and hardened concrete; and quality control of concretes containing high-range water-reducing admixtures. Designed for use by designers, contractors, concrete suppliers, specifiers and all others engaged in concrete construction.