Q. The process of mixing, transporting, placing and compacting concrete using Ordinary Port land Cement should not take more than

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Q. Pick up the incorrect statement from the following. While performing preliminary test on concrete

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Q. Sand requiring a high water cement ratio, belongs to

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Q. For a good concrete

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Q. If the effective plan area of a warehouse is 54 sq. m, and maximum height of piles permitted is 270 cm, the number of cement bags to be stored, is

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Q. Gypsum is added for

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Q. A concrete having a slump of 6.5 cm, is said to be

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Q. Strength of concrete with passage of time

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Q. According to IS : 382-1963, a good aggregate should be

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Q. The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be

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Q. If P, Y and Z are the weights of cement, fine aggregates and coarse aggregates respetively and W/C is the water cement ratio, the minimum quantity of water to be added to first batch, is obtained by the equation

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Q. For the construction of thin R.C.C. structures, the type of cement to be avoided, is

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Q. Vicat apparatus is used for

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Q. Concrete gains strength due to

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Q. If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60 mm, the particular aggregate will be flaky if its minimum dimension is less than

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Q. Non-uniform compaction may cause the concrete

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Q. Log Angles machine is used to test the aggregate for

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Q. If fineness modulus of sand is 2.5, it is graded as

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Q. The dimensions of a 35 litre forma for measuring aggregates by volume, are :

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Q. The shuttering of a hall measuring 4 m x 5 m, can be removed after

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