It is one of the type of cements where the initially set in 5 mins and final set is achieved in 30 mins, which is used in the special conditions of construction like in running water. In this article we ...
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Portland Pozzolana Cement – Manufacture, Properties and Uses
Portland Pozzolana cement is integrated cement which is formed by synthesising OPC cement with pozzolanic materials in a certain proportion. It is commonly known as PPC cement. In this article we discuss about the properties, manufacture, characteristics, advantages and disadvantages ...
Waterproofing Admixtures for Concrete – Requirement, Functions, Dosage and Mechanism
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 ...
Types of Concrete Chemicals (Admixtures) and their Applications
Concrete chemicals or admixtures are materials other than cement, aggregate and water that are added to concrete either before or during its mixing to alter its properties, such as workability, curing temperature range, set time or color. Some concrete admixtures ...
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 cost of concrete construction ...
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 ...
Requirements of Concrete Admixtures for use in Construction
Admixture is a material that is used as an ingredient for the preparation of concrete, and is added to the batch immediately prior to or during mixing materials (ACI 212.R-10). The purpose of blending admixtures is to improve fresh or ...