Q. If 50 kg of fine aggregates and 100 kg of coarse agregates are mixed in a concrete whose water cement ratio is 0.6, the weight of water required for harsh mix, is

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Q. The entrained air in concrete

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Q. Pozzolanic properties exist in

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Q. An aggregate which passes through 25 mm I.S. sieve and is retained on 20 mm sieve, is said to be flaky if its least dimension is less than

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Q. Expansion joints are provided if the length of concrete structures exceeds

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Q. Workability improved by adding

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Q. If the slump of a concrete mix is 60 mm, its workability is

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Q. An excess of flaky particles in concrete aggregates

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Q. 1.S.I. has specified the full strength of concrete after

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Q. For given workability the grading requiring the least amount of water is one that gives

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Q. The minimum percentage of chemical ingredient of cement is that of

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Q. The specifications of a cement bag for storage, are

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Q. The concrete mix which causes difficulty in obtaining a smooth finish, possess

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Q. Le-Chatelier's apparatus is used for testing

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Q. 'Ware house pack' of cement means

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Q. In the method of voids for determination of the quantity of cement paste, it is assumed that

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Q. If a grading curve is horizontal bet-wen the portions of 20 mm I.S. Sieve and 4.75 mm I.S. Sieve, the graded aggregates do not contain

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Q. The size of fine aggregates does not exceed

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Q. An aggregate is known as cyclopean aggregate if its size is more than

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Q. The main object of compaction of concrete, is:

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