Concrete Technology MCQs with answers Page - 20

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Q. The value of bulk density of the aggregate depends upon

  • (A) size distribution of aggregate
  • (B) shape of aggregate
  • (C) specific gravity of aggregate
  • (D) all of these

A

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Q. High percentage of tricalcium silicate and low percentage of dicalcium silicate in cement results in

  • (A) rapid hardening
  • (B) high erly strength
  • (C) high heat generation
  • (D) none of these

A

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Q. When vibrators are used for compaction, the consistency of concrete depends upon the

  • (A) type of mix
  • (B) placing conditions
  • (C) efficiency of vibrator
  • (D) all of these

A

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Q. Reinforced cement concrete is equally strong in taking

  • (A) tensile and compressive stresses
  • (B) compressive and shear stresses
  • (C) tensile, compressive and shear stresses
  • (D) tensile and shear stresses

A

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Q. The process of mixing, transporting, placing and compacting the cement concrete should not take more than

  • (A) 30 minutes
  • (B) 60 minutes
  • (C) 90 minutes
  • (D) 120 minutes

A

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Q. The material having particle size varying from 0.002 to 0.06 mm is termed as

  • (A) silt
  • (B) clay
  • (C) sand
  • (D) none of these

A

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Q. The strength of cement concrete increases with the increase of water cement ratio.

  • (A) Agree
  • (B) Disagree
  • (C) ---
  • (D) ---

A

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Q. The bulk density of aggregates depends upon its

  • (A) shape
  • (B) grading
  • (C) compaction
  • (D) all of these

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Q. The main requirement, which a ware-house should fulfil is that

  • (A) its walls should be water proof masonry construction
  • (B) its roof should be leak-proof
  • (C) it must have large number of windows
  • (D) Both (a) and (b)

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Q. If the slump of the concrete mix is less than 50 mm, then while compacting it with vibratiors, the segregation will not take place.

  • (A) Right
  • (B) Wrong
  • (C) ---
  • (D) ---

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