Can we use crushed Sand for house construction

Fine aggregate/ coarse sand consists of natural sand, crushed stone sand or crushed gravel stone dust. It should be hard, durable chemically inert, clean and free from organic matter, not containing any appreciable amount of clay balls or pellets and other harmful impurities i. e. alkaline, salt, mica, decayed vegetation, lumps etc.

It should be passed through I. S. Sieve 4.75 MM. It should have the finest modulus 2.50 to 3.50 and silt contents should not be more than 4%. Coarse sand should be either river sand or pit sand; or combination of the two. It should be obtained from Badarpur Sand or Stone dust obtained by crushing hard stones or gravel. It should also be obtained from river bed such as Tajewala , Dadupur sand.

Caution:
The quality of the sand has more impact on the strength of the structure inspite of the quantity of the cement used.
1) If there is more silt in coarse sand, the strength of cement mortar is reduced from 1 % to 30%.
2) If you take best quality coarse sand, it will give maximum strength

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