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What are aggregates?

Aggregates are the deposits of minerals which are  grinded, crushed to attain desired shape and size, thus are not chemically processed. These are widely used in the manufacture  of concrete, mortar ;...

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Aggregate Crushing Value

Aggregates used in the construction, should be strong enough to resist crushing. If the aggregates are weak, the stability of the structure is likely to be adversely affected. The strength of coarse...

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In concrete why cement is the only chemically active material???

The reason is that only one chemically active material is desired  otherwise the products formed will be  complex  and might result in the formation of unwanted products . Also adding to this the...

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Difference between “setting” and “hardening” of concrete

Setting of concrete is normally a phenomenon that occurs after 2 hours of mixing of concrete. It is a stage in which concrete attains stiffness to retain to its shape. Hardening of concrete is the...

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What is meant by “Characteristic strength” (fck) of concrete??

Characteristic strength of concrete is one of the important properties of concrete which indeed unanimously by design engineer or any other person involved in the construction sector. The compressive...

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Micro structure of Concrete

Research has made it possible to significantly improve the strength and durability of concrete without a great increase in cost. As a result of the research “Concrete technology” has under gone from a...

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