Concrete Technology - Concrete Technology objective questions and answers

6.  Water cement ratio in concrete is non-influenced by the method of

   A. Batching

   B. Mixing

   C. Compaction

   D. Placing

7.  For making light weight concrete, the gas bubbles are created by adding

   A. Aluminium powder to the slurry

   B. Air bubbles to the slurry

   C. Water bubbles to the slurry

   D. Zinc powder to the slurry

8.  Which one of the following will have least coefficient of friction of concrete with the soil?

   A. Dry clay

   B. Moist clay

   C. Wet clay

   D. Dry rock

9.  Concrete is considered as unsuitable for compaction by vibration if it is

   A. Plastic

   B. Semi plastic

   C. Dry

   D. Moist earth

10.  The shrinkage of concrete can be reduced by reducing

   A. The water content of mix

   B. The curing period

   C. The temperature

   D. The cement in the mix

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