Answer / a. v. r

3 % by weight as per IS 383.

Answer / vijay kumar jayswal

Not More than 8% by Volume Asper Cpwd Specification

Answer / naresh kumar n

AS PER IS:383-1970 THE SILT CONTENT SHOULD BE MAX 3% FOR
UNCRUSHED SAND i.e, RIVER SAND AND MAX 15% FOR CRUSHED SAND
i.e, CRUSHED STONE SAND.

Answer / md yunus khan

As per Is Codes By Weight Silt Limit Is 3%.
As Per CPWD Codes By Volume Silt Limit Is 8%.

Answer / narmadha

Should not be more than 8%

Answer / nagesh

I agree that percentage of siltcontent by weight should be
3% and by volume upto 8%, but can anybody tell why the
permissible silt content is 15% for crushed sand.

Answer / g varun

AS PER IS:383-1970 for CONCRETE THE SILT CONTENT

1.SHOULD BE MAX 3% FOR UNCRUSHED SAND i.e, RIVER SAND

2.AND MAX 15% FOR CRUSHED SAND i.e, CRUSHED STONE SAND

As per is 2116 for mortor

1.SHOULD BE MAX 5% FOR UNCRUSHED SAND i.e, RIVER SAND

2.AND MAX 5% FOR CRUSHED SAND i.e, CRUSHED STONE SAND

Answer / adesh kumar dohare

As per IS 383 Silt percentage in Content of sand minimum 3% and maximum 8%. 

Answer / nikunj faldu

not grater then 5% of sand volum.

Answer / g varun

for mortor purpose silt by weight is
5% for natural sand
5% for crushed sand

for concrete purpose silt by weight is
3% for natural sand
15% for crushed sand

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