Characteristics of Coarse Aggregate
There are following characteristics of Coarse Aggregate.
1) The coarse aggregate should be clean, hard, non porous free from lumps of clay and vegetable matter.
2) Water absorption should not be more than 10 % of it’s weight after 24 hours immersion in water.
3) Angular and roughly cubicle particles are ideal. River gravels make the best coarse aggregate.
4) Aggregate should chemically be inert material.
5) Brick aggregate should not be used in RCC work.
Sub standard material reduces the strength of RCC, Reinforced Cement Concrete, by 10 to 30 %. Use these steps to ensure the procurement of right quality material at right price
Coarse Aggregate consists of crushed, uncrushed or broken stones. Check the grading of sand for proper sizes.
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Without knowing perfect mixture of cement and sand you can not achieve your goal.
Manufacturing date, grade and type play vital role in purchasing right cement and there should be no lumps in it.
First Class Bricks must be homogeneous in texture without showing appreciable sign of efflorescence.
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Fine sand should consist of natural sand or crushed stone sand. It should be hard, durable, clean and be free from organic matter etc. and should not contain any appreciable amount of clay balls and harmful impurities such as alkalis, salts, coal, decayed vegetation etc.
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Coarse Aggregate
Coarse Sand
Coarse Aggregate
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