☰ Concrete Technology (Civil Engineering) - MCQs

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Q7.

Workability of concrete can be improved by addition :

  • A. Iron
  • B. Sodium
  • C. Zinc
  • D. Sulphur

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Q8.

Split strength of concrete can be determined by :

  • A. Brazilion test
  • B. Vicat's apparatus
  • C. Cube test
  • D. Briquettes test

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Q9.

Strength of concrete increases with :

  • A. increase in water cement ratio
  • B. increases in fineness of cement
  • C. decreases in curing time
  • D. decrease in size of aggregate

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Q10.

Strength of concrete increases with :

  • A. increases in water cement ratio
  • B. decreases in water cement ratio
  • C. decreases in size of aggregate
  • D. decreases in curing time

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Q11.

Approx ratio of the strength of the cement concrete of 7 days to that of 28 days :

  • A. 0.56
  • B. 0.85
  • C. 1.0
  • D. 1.15

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Q12.

Approximate ratio of the direct tensile strength to direct compressive strength test is :

  • A. 0.33
  • B. 0.25
  • C. 0.10
  • D. 0.05

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