Concrete Technology MCQs with answers Page - 17

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Admin • 833.24K Points
Coach

Q. The light-weight concrete is prepared by ____________

  • (A) Mixing Portland cement with sawdust in specified proportion in the concrete
  • (B) Using coke-breeze, slag as aggregate in the concrete
  • (C) Mixing Al in the concrete
  • (D) Mixing Fe in the concrete

A

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Q. Aerated Concrete is ______________

  • (A) Very heavy weight
  • (B) Heavy weight
  • (C) Medium weight
  • (D) Light weight

A

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Q. No fines concrete is manufactured by _____________

  • (A) By adding no fines materials from normal concrete
  • (B) By eliminating no fines materials from normal concrete
  • (C) By reducing its strength
  • (D) By increasing its strength

A

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Q. Density of no fines concrete with light weight aggregate vary from ________ kg/m3.

  • (A) 1600-1900
  • (B) <300
  • (C) >2500
  • (D) >300

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Admin • 833.24K Points
Coach

Q. Diameter of Round Steel Fiber lies in the range of ________ mm.

  • (A) .3-.5
  • (B) .25-.75
  • (C) .155-.41
  • (D) .25-.90

A

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Q. Air contents should be _________ % by volume.

  • (A) 1-2
  • (B) 2-3
  • (C) 3-4
  • (D) 4-5

A

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Q. Which one is not used as air entraining agents?

  • (A) Alumina
  • (B) Natural resins
  • (C) Fats
  • (D) Oil

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Q. What is wet process?

  • (A) Grinding and mixing of the raw materials in their dry state
  • (B) Grinding and mixing of the raw materials in their medium state
  • (C) Grinding and mixing of the raw materials in their wet state
  • (D) Grinding and mixing of the raw materials in their overheated state

A

Admin • 833.24K Points
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Q. Excess in lime causes _______

  • (A) The cement to shrink and integrate
  • (B) The cement to shrink and disintegrate
  • (C) The cement to expand and integrate
  • (D) The cement to expand and disintegrate

A

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Q. Silica in excess causes ________

  • (A) The cement to set slowly
  • (B) The cement to set quickly
  • (C) The cement to expand
  • (D) The cement to disintegrate

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