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Category : Concrete Admixtures

Admixtures are used to modify properties of concrete in fresh and hardened state. Articles on concrete admixtures are presented.

Polymer Modified Mortar – Types, Properties, and Applications

Polymer modified mortar is produced by mixing water with polymeric admixtures, Portland cement, and sand. The addition of polymer improves mortar's performance and consequently can be utilized advantageously and economically in several applications.Latex polymers, ...

Viscosity Modifying Admixtures (VMAs) in Concrete

Viscosity Modifying admixtures or VMAs are the admixtures used to change the properties such as viscosity, workability, cohesiveness etc. of fresh concrete. Function of VMA and Applications in different types of concretes are discussed below. Function of Viscosity Modifying Admixture (VMA) ...

Role of Calcium Chloride in Concrete

Calcium chlorides is used as accelerator in hydration process of cement, leading to quick set of concrete and to get high initial strength concrete. Maximum permissible limit of addition of calcium chloride is 2% in flake form.

Blended Cement – Characteristics, Types and Uses

Blended cement can be defined as uniform mix of ordinary Portland cement (OPC) and blending materials such as silica fumes, fly ash, limestone and slag to enhance its properties for different uses. Blended cement can improve workability, strength, durability and ...

Role of Gypsum in Cement and its Effects

Gypsum is a mineral and is hydrated calcium sulphate in chemical form. Gypsum plays a very important role in controlling the rate of hardening of the cement, so its is generally termed as retarding agent of cement. It is mainly used ...