Concrete Technology - Concrete Technology objective questions and answers

21.  The cement concrete prepared by mixing aluminium in it, is called

   A. Air-entertained concrete

   B. Cellular concrete

   C. Aerated concrete

   D. Any of the above

22.  Lightweight concrete is used for

   A. Reducing thickness of structures

   B. Heat resistance

   C. Air-conditioned building

   D. Non-load bearing walls

23.  For concreting aggregate should be in

   A. Bone dry condition

   B. Surface dry condition

   C. Moist surface condition

   D. Wet condition

24.  Separation of course aggregates from concrete during transportation is

   A. Bleeding

   B. Creeping

   C. Segregation

   D. None of the above

25.  Separation of water or water sand cement from a freshly concrete, is known

   A. Bleeding

   B. Creeping

   C. Segregation

   D. Flooding

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