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Assuming that the workability of concrete is of no consequence, would sand be necessary in concre...

Assuming that the workability of concrete is of no consequence, would sand be necessary in concrete mixtures? What is the significance of fineness modulus?
answer should be in an advanced level

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Yes, sand not only influences workability but also influences finishability and shrinkage,etc....hence sand required in concrete mixtures.FM indicates average size of aggregates, which indirectly influences workability,finishability,strength,w/c ratio,...

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