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Some General
Specifications for Civil Engineering Works state “Fine aggregate for concrete
shall be natural river-deposited sand consisting of at least 95% by
mass of
quartz grains”. The aim of such specification is to
control the quality of
river sand.
As quartz is a durable and hard material,
using a high percentage
of quartz in aggregates of concrete can enhance the strength and
durability
of the surface texture of concrete carriageway.
In addition, such specification requires a high percentage of quartz content, thereby reducing
the probability of presence of impurities like shell.
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