Concrete Technology - Concrete Technology objective questions and answers

26.  The construction joints in cement concrete

   A. Should be located where bending moment is large

   B. Should be located where shear force is large

   C. Should not be provided at the corners

   D. Should be spaced at a distance of 3 m apart in case of huge structures

27.  Concrete is unsuitable for compaction by a vibrator if it is

   A. Dry

   B. Earth moist

   C. Plastic

   D. Semi-plastic

28.  For ensuring quality of concrete, use

   A. Single sized aggregates

   B. Two sized aggregates

   C. Graded aggregates

   D. Coarse aggregates

29.  Expansion joints are provided if the length of concrete structures exceeds

   A. 10 m

   B. 15 m

   C. 35 m

   D. 45 m

30.  Inert material of cement concrete mix, is

   A. Water

   B. Cement

   C. Aggregate

   D. None of these

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