10%
For River Sand Not more than 8%
As per ASTMC94/C94M clause-8 the permissible variation of concrete ingredients as follows- Cement and cement and mineral admixtures (or cementitious material)-0 to +4% Aggregates cumulative- +/- 3% Admixture and water- +/- 3%
Sand cone test is detemination of silt content of sand
plaster sand
IS limit for silt in sand is 15to 35
The permissible limit for the bulking percent of sand typically ranges from 5% to 10%. This means that when moisture is present, the volume of sand can increase by this percentage due to the formation of a thin film of water around the sand particles. Exceeding this limit can lead to inaccurate measurements and affect the quality of concrete or mortar mixes. It's essential to account for bulking in construction to ensure proper material proportions and workability.
by replacement method
The maximum bulking of sand is in 13% to 14% moisture content. It's likely to be 13.8% moisture content.
Bulking of sand means increase in it's volume due to presence of surface moisture . The volume increases with increase in moisture content . The volume may increase up to 20 to 40% when moisture content is 5 to 10 %.Due to moisture in each particle of sand, sand gets a coating of water due to surface tension which keeps the particles apart. This causes an increment in volume of sand known as Bulking.
Bulking of sand means increase in it's volume due to presence of surface moisture . The volume increases with increase in moisture content . The volume may increase up to 20 to 40% when moisture content is 5 to 10 %.Due to moisture in each particle of sand, sand gets a coating of water due to surface tension which keeps the particles apart. This causes an increment in volume of sand known as Bulking.- Edited by KASEE SREENIVAS# Hindustan Construction Company
Yes, it is generally permissible to bring small amounts of sand on a plane in your carry-on luggage, but it is always best to check with the airline and TSA guidelines to ensure compliance with any restrictions or regulations.
No, sand covers about 20 percent of deserts.
About 20 percent of desert land is covered by sand.
No, sand covers about 20 percent pf deserts.
About 20 percent of the land in deserts is covered by sand.
Sand covers about 20% of most deserts.
No, sand covers about 20 percent pf deserts.