Concrete Technology MCQs Set-2

March 19, 2021

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1. The type of lime used in lime concrete is

2. 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

3. Normally, when ordinary Portland cement hydrates

4. If the slump of concrete mix is 70mm, its workability is considered to be

5. According to IS: 456-1978, the maximum water-cement ratio in plain concrete to ensure durability in mild exposure is limited to

6. The aggregate which pass through 4.75 mm IS sieve and entirely retain on 75 micron IS sieve is called

7. Lime when added in excess quantity

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

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

10. The workability of concrete by slump test is expressed as


 

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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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