Superplasticisers are high range water reducing admixtures. Admixture is defined as a material other than cement ,water and aggregate that is used as an ingredient of concrete and is added to the batch immediately before or during mixing. The development of superplasticisers is one the major break throughs in concrete technology, which will have a significant effect on the production and use of concrete in the next millennium. Superplasticisers have been greatly responsible for development of the following connects.
1) High performance connect ....etc

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Sewage treatment is the process of removing contaminants from wastewater, primarily from household sewage. It includes physical, chemical, and biological processes to remove these contaminants and produce environmentally safe treated wastewater (or treated effluent). A by-product of sewage treatment is usually a semi-solid waste or slurry, called sewage sludge, that has to undergo further treatment before being suitable for disposal or land application.

Sewage treatment may also be referred to as wastewater treatment, although the latter is ....etc

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The proportions of aggregates and cement are important as they are used to obtain optimized, workable and cohesive concrete for a set of locally available concrete ingredients.
When analyzing / designing a concrete mix, the proportion of aggregate cement plays following important roles.
1. The ratio of total aggregate per cement (A / C) decreases with increasing degree of concrete. For example, the degree of aggregate M20 will have an A / C ratio higher than that of M30
The weaker the A / C ratio of the concrete mix, the lower the cement con ....etc

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Concrete Superplasticizers



What is a superplasticizer

Developed in the 1960 s
First used in Japan and Germany
Introduced in the U.S. in the 1970 s
Neutralizes the surface charges
Causes dispersion
Releases water in cement particles
Reduces viscosity

Linear polymers containing sulfonic acid groups
Sulfonated melamine-formaldehyde condensates
Sulfonated nephthalene-formaldehyde condensates
Modified lignosulfonates
Polycarboxylate derivatives

Main Purpose
....etc

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