Maximum distance between expansion joints in structures as per IS : 456 – 1978 is________________?

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The most commonly used admixture which prolongs the setting and hardening time is_______________?

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1% of voids in a concrete mix would reduce its strength by about______________?

A. 5% B. 10 % C. 15% D. 20%...

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The main reinforcement in the heel of a T-shaped R.C. retaining wall is provided on______________?

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