CONCRETE ADMIXTURES – SELECTION AND APPLICATIONS

Concrete admixtures are used to enhance the properties of concrete for applications in concrete works with special requirements. Concrete admixtures are used to modify the...

CONCRETE CHEMICALS AND APPLICATIONS

Concrete Chemicals (Admixtures) and ApplicationsAdmixtures are materials other than cement, aggregate and water that are added to concrete either before or during its mixing...

FACTORS AFFECTING CONCRETE ADMIXTURES PERFORMANCE

The various factors which affect the performance of concrete admixtures are: 1. Type of super-plasticizer: The admixture will be more effective if...

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...

STANDARD CODES FOR CONCRETE ADMIXTURES

Standard Codes for concrete admixtures: Admixtures used should conform to the following relevant  standard codes. In reinforced concrete, the chloride ion...

PROPERTIES AND USES 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...

FUNCTIONS OF CONCRETE ADMIXTURES

Concrete admixtures are added to change the properties of concrete to make it function as required. Admixtures are used to modify properties of both...

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...

RETARDING WATER-REDUCING CONCRETE ADMIXTURE

Retarding water-reducing admixtures are chemicals that slow down the initial reaction between cement and water by reducing the rate of water penetration to the...

SHRINKAGE REDUCING CONCRETE ADMIXTURE

Shrinkage-reducing concrete admixture promote expansion of the concrete at about the same volume that normal drying shrinkage is contracting it. The net change in...