Answer / sjtbehera

For plastering Fine sand are used for smoothness of surface.
For RCC And brickwork coarse sand are used because coarse
sand are less cosy and easily avilable.

Answer / surajitg

Above answer is partly correct. We use coarse sand for better strength and to reduce cement consumption. First of all we have to know why we use sand. Sand is used as a filler material of concrete. It is part of aggregate that's why it is called fine aggregate. If we use fine sand then no of sand particles will be more and overall surface area of sand will be quite high than when we are using coarse sand. When the surface area of sand is high, then to cover the surface with boding agent (i.e. cement gel) will be high.

how to calcualate the amount of stone,cement,sand required for 1cum of 450mm thick ruble stond masonary with ratio1:5, please me an answer with dtailed step

0 Answers   DBM, RGCA,

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In an aggregate blending plant, water is sprayed before blending is performed. If the fine content in aggregate is as high as 25 %, will not the fines form into lumps / balls and distribution will not be uniform ? Further, the fines will stick onto the interior of pug mill and its content will be low. The mixed material is stockpiled for weeks / months before use. Will it not be better that blending is done in dry condition, and water will be added only during compaction at site. Please forward your comments and suggestions.

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2 Answers   GMR, Taehwa Enterprises,

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4 Answers   Maytas,

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0 Answers   Ansal Housing,

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10 Answers   IBM,

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0 Answers   Infosys,

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