SAND

SAND  It consists of small grains of silica and is formed by the disintegration of rocks caused by weather. Classification of Sands The classifications of sand are; Fine sand, medium sand,  and coarse sand Fine sand = 0.075 to 0.425 MM Medium sand = 0.425 to 2 MM Coarse...

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CONCRETE

CONCRETE Concrete is made by mixing: Cement, water, fine aggregates, coarse aggregates and admixtures (if required). Properties of concrete Properties of Fresh Concrete are a) Workability b) Consistency c) Segregation d) Bleeding e) Setting Time a) Workability The concrete...

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AGGREGATES

AGGREGATES  Aggregates are materials mixed with binding materials like cement, lime or mud in the preparation of mortar or concrete. These shall consist of naturally occurring stones, gravels, and sand and shall be hard, strong and durable. Natural aggregates are formed by the process of...

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Qualities of Good Bricks

Qualities of Good Bricks  The qualities of good bricks are as listed below: Colour Colour should be uniform and bright. Shape            Bricks should have plane faces.  They should have sharp and truly right angled corners....

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Functions of various ingredients of brick earth

Functions of various ingredients of brick earth Silica: It enables the brick to retain its shape and imparts durability, prevents shrinkage and warping. Excess of silica makes the brick brittle and weak on burning. A large percentage of sand or uncombined silica in clay is undesirable. However,...

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Defects In Bricks ,Brick Earth Composition:

Defects in bricks Over burning of bricks: Bricks should be burned at temperatures at which incipient complete and viscous verification occur. However, if the bricks are over burnt, a soft molten mass is produced and the bricks lose their shape. Such bricks are not used for construction works. Under burning...

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