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Question
In case of concrete pavement, why is requirement of 95% by mass of quartz grains are specified in contract?
Answer In universal Specification of Civil Engineering, in Clause 10.09 it states "Fine aggregate for concrete shall be usual river-deposited sand consisting of at least 95 percent by mass of quartz grains". Aim of such requirement is to control excellence of river sand. As quartz is a strong and hard material, using a far above the ground percentage of quartz in aggregates of concrete is able to enhance strength and durability of surface texture of concrete carriageway.
In adding, such specification needs a high percentage of quartz content, thereby dropping the probability of being there of impurities as shell.
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Question What is dissimilarity in request between open stirrups and closed stirrups in Concrete beams? Answer Open stirrups are supplied principally to oppose shear forces in
Compaction to freshly placed concrete piles In general practice, reliance is placed on the self-compaction of particularly designed concrete mixes to achieve adequate compact
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I want to know the necessary material list during replacement of Expansion Joint
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