Concrete Technology MCQs with answers Page - 3

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Q. For compressive strength test of cement ………. water is added.

  • (A) p/3 + 3
  • (B) p/2 + 3
  • (C) p/4 + 3
  • (D) p/5 +3

A

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Q. Undesirable expansion of some of constituents of cement after setting is known as……… .

  • (A) Soundness
  • (B) unsoundness
  • (C) None
  • (D) All

A

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Q. Density of light weight aggregate concrete is about …….. kg/m3

  • (A) 3000
  • (B) 1500
  • (C) 1200
  • (D) 1400

A

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Q. Material between…………… is classified as silt.

  • (A) 0.002 mm to 0.003 mm
  • (B) 0.08 mm to 1 mm
  • (C) 8 mm to 10 mm
  • (D) 0.06 mm to 0.002 mm

A

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Q. Angular aggregate having percentage of voids ranging from……….

  • (A) 32 to 33
  • (B) 35 to 38
  • (C) 38 to 40
  • (D) 40 to 45

A

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Q. In crushing value test of aggregate, gradually compressive load of….. Tons is apply.

  • (A) 40
  • (B) 50
  • (C) 44
  • (D) 45

A

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Q. Specific gravity of natural aggregate lie between……

  • (A) 2.5 to 2.6
  • (B) 2.6 to 2.7
  • (C) 2.6 to 2.8
  • (D) 2.8 to 2.9

A

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Q. Coarse aggregates absorbs…….. % of moisture.

  • (A) 1 to 2
  • (B) 0.5 to 1
  • (C) 2 to 4
  • (D) 2 to 3

A

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Q. To control alkali aggregate reaction restricting alkali content in cement below……%

  • (A) 1
  • (B) 0.1
  • (C) 0.5
  • (D) 0.6

A

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Q. An excess of flaky particles in concrete aggregates

  • (A) decreases the workability
  • (B) increases the quantity of water and sand
  • (C) affects the durability of concrete
  • (D) all the above

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