| Wed May 27, 2015 | Post #1 | S L Gupta (Civil Engg)
Join date: Mar 2008 | Dear
The specification of sand is as follows
The 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.
Note: In general the sand particle should be coarser and have minimum silt contents. The silt contents should not be more than 4%. 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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| Wed May 27, 2015 | Post #2 | Santhosh GL
Join date: May 2015 | Thanks Gupta for the quick answer !
Could you please help me how can i do a test at home ?
is there any easy methods to do a test, if so it would be really helpful.
Thanks and regards
Santhosh GL
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| Wed May 27, 2015 | Post #3 | S L Gupta (Civil Engg)
Join date: Mar 2008 | Dear
For site test take glass pure some sand, than pure water and stir the sand in water for short time than left it to settle. After settling the water you see layer of silt on the top of sand.The silt contents should be up to 4%. The sand should be coarser not fine.
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| Wed May 27, 2015 | Post #4 | Santhosh GL
Join date: May 2015 | Thanks, am going to test and let you know the result.
Thanks and regards
Santhosh
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