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Natural Sand– it is the aggregate resulting from the natural breakdown of rock and which has been deposited by streams or glacial agenciesCrushed Stone Sand– it is the fine aggregate created by crushing hard stone.
Crushed Gravel Sand– it is the fine aggregate formed by crushing natural gravel.
According to size the fine aggregate may be described as coarse sand, medium sand and fine sand. IS specifications categorize the fine aggregate into four types according to its grading as fine aggregate of grading Zone-1 to grading Zone-4.
The four grading zones become gradually finer from grading Zone-1 to grading Zone-4. 90% to 100% of the fine aggregate passes 4.75 mm IS sieve and 0 to 15% passes 150 micron IS sieve depending upon its grading zone.
FINE AGGREGATE
It
is the aggregate the majority of which passes 4.75 mm IS sieve and contains
only so much coarser as is permitted by specification. According to source fine
aggregate might be described as:
Natural Sand– it is the aggregate resulting from the natural breakdown of rock and which has been deposited by streams or glacial agenciesCrushed Stone Sand– it is the fine aggregate created by crushing hard stone.
Crushed Gravel Sand– it is the fine aggregate formed by crushing natural gravel.
According to size the fine aggregate may be described as coarse sand, medium sand and fine sand. IS specifications categorize the fine aggregate into four types according to its grading as fine aggregate of grading Zone-1 to grading Zone-4.
The four grading zones become gradually finer from grading Zone-1 to grading Zone-4. 90% to 100% of the fine aggregate passes 4.75 mm IS sieve and 0 to 15% passes 150 micron IS sieve depending upon its grading zone.
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