Concrete Technology – HI MCQ!

The object of compaction is to?

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Vertical sides of columns may be stripped after?

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The process of hardening the concrete mixes by keeping its surface moist for a certain period called?

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The minimum quantity of cement to be used in controlled concrete is specified as?

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For compacting plain concrete or one-way reinforced concrete floors, the vibrator used is?

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The compressive strength of an ordinary Portland cement (1:3 cement mortar cube) after 7 days test should not be less than?

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The workability of concrete by slump test is expressed as?

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To perform the initial setting time test, the water is added to the cement at the rate of ………….. by weight of cement?

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To prevent segregation, the concrete should not be thrown from a height of more than?

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To perform the compressive strength test of cement, water is added at the rate of?

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