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Total Questions : 1012 | Page 96 of 102 pages
Question 951. 7.  Slump test is done for
  1.    clay
  2.    sand
  3.    lime
  4.    concrete
 Discuss Question
Answer: Option D. -> concrete
Question 952. 8.  Particles of 0002 mm size are that of
  1.    clay
  2.    sand
  3.    gravel
  4.    none of these
 Discuss Question
Answer: Option A. -> clay
Question 953. 4.  The shrinkage of concrete
  1.    is proportional to water content is the mix
  2.    is proportional to cement concrete
  3.    increases with age of concrete
  4.    all the above
 Discuss Question
Answer: Option D. -> all the above
Question 954. 0.  The aggregate impact value of the aggregate used in
  1.    building concrete is less than 45
  2.    road pavement concrete is less than 30
  3.    runway concrete is less than 30
  4.    all the above
 Discuss Question
Answer: Option D. -> all the above
Question 955. 9.  Gypsum is added for
  1.    colour
  2.    strength
  3.    controlling setting time
  4.    none of these
 Discuss Question
Answer: Option C. -> controlling setting time
Question 956. 3.  Workability of concrete may be improved by adding
  1.    air-entraining agent
  2.    foaming agent
  3.    oily-agent
  4.    all the above
 Discuss Question
Answer: Option D. -> all the above
Question 957. 1.  The void ratio of
  1.    single size coarse aggregate is roughly 045
  2.    graded coarse aggregate is roughly 0040
  3.    fine aggregate is roughly 045
  4.    all the above
 Discuss Question
Answer: Option D. -> all the above
Question 958. 2.  Workability of concrete may be improved by adding
  1.    fly ash
  2.    hydrated lime
  3.    calcium chloride
  4.    all the above
 Discuss Question
Answer: Option D. -> all the above
Question 959. 5.  Addition of pozzolana to cement causes
  1.    reduction in permeability
  2.    loss of heat of hydration
  3.    reduction in bleeding
  4.    all the above
 Discuss Question
Answer: Option D. -> all the above
Question 960. 9.  The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength, is known as
  1.    low-heat Portland cement
  2.    rapid hardening Portland cement
  3.    Portland blast slag cement
  4.    Portland pozzolana cement
 Discuss Question
Answer: Option A. -> low-heat Portland cement

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