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Question
If one intends to obtain the best workability of concrete, the preferred shape of aggregate is
If one intends to obtain the best workability of concrete, the preferred shape of aggregate is
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Solution
The correct option is A round
The aggregate with rounded particles gives minimum ratio of surface area to the volume, thus requiring minimum cement paste to make good concrete. The angular shaped aggregates on the other hand provides good interlocking, hence good bond, between the particles, but it requires more cement paste to make workable concrete of high strength.
The aggregate with rounded particles gives minimum ratio of surface area to the volume, thus requiring minimum cement paste to make good concrete. The angular shaped aggregates on the other hand provides good interlocking, hence good bond, between the particles, but it requires more cement paste to make workable concrete of high strength.
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