Concrete Technology MCQs Set-2

March 19, 2021

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1. The presence of entrained air in concrete results in

i) reducing bleeding

ii) lowering density of concrete

iii) decreasing strength at all ages

The correct answer is

2. According to IS: 456-1978, the column or the strut is the member whose effective length is greater than

3. For the manufacture of concrete of low density, the aggregate used is

4. The approximate value of the ratio between direct tensile strength and flexural strength is

5. The slab is designed as one way if the ratio of long span to short span is

6. The top diameter, bottom diameter and height of the mould used for slump test are respectively

7. Reinforced cement concrete is equally strong in taking

8. Low percentage of tricalcium silicate and high percentage of dicalcium silicate in cement result in

9. Normally, when ordinary Portland cement hydrates

10. According to IS: 456-1978, minimum period stipulated for moist curing of concrete using ordinary Portland cement is


 

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A Demrot is the founder of VideRime Online Learning, a leading engineering website. He did his BE Civil and M.Tech Structure from RGPV University, Bhopal and has been working as an Assistant Professor in a reputed college.

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    Strength: Very Weak