What is Waterproofing Admixture for Concrete? Waterproofing admixture is a type of admixture which prevents the passage of water through hardened concrete under a pressure head. It is also called as water resisting admixture or permeability reducing admixture or damp ...
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ADVERSE EFFECT OF CONCRETE ADMIXTURE
Adverse effects due to improper application : Admixtures are used extensively to produce high workable, high strength high performance and highly durable concrete with minimum cost. However, these admixtures are not used judiciously and with the poor knowledge of admixture ...
Standard Codes for Concrete Admixtures
As per ACI 212.3R-10, Concrete admixture is a material other than water, aggregates, hydraulic cement, and fiber reinforcement used as an ingredient of concrete or mortar, and added to the batch immediately before or during its mixing. Concrete admixtures are ...
Properties and Uses of Different Types of Concrete Admixtures
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 the cost of concrete ...
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 ...