What are Concrete Admixtures? Ingredients other than cement, water, and aggregates that impart a specific quality to either plastic (fresh) mix or the hardened concrete (ASTM C496) is called concrete admixture. Why use Concrete Admixtures? Reduce cost of concrete construction ...
Category: Concrete Admixtures
Admixtures are used to modify properties of concrete in fresh and hardened state. Articles on concrete admixtures are presented.
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Accelerating Water-Reducing Concrete Admixtures
Accelerators increase the initial rate of chemical reaction between the cement and the water so that the concrete stiffens, hardens, and develops strength more quickly. They have a negligible effect on consistence, and 28-day strengths are seldom affected. Accelerating admixtures ...
QUALITY REQUIREMENT OF ADMIXTURE
Quality Requirement of Admixture When the admixtures are said to be compatible with concrete, it should meet the following quality requirement; i) Characteristics of admixture : The data sheet shall give the characteristic details such as type of admixtures, available ...