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  1. Addition of pozzolana to cement
  2. A concrete having a slump of 6.5 cm, is said to be
  3. If 50 kg of fine aggregates and 100 kg of coarse aggregates are mixed in a concrete whose water cement…
  4. The risk of segregation is more for
  5. Curing a concrete for long period ensures better
  6. If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60 mm,…
  7. An excess of flaky particles in concrete aggregates
  8. Pick up the correct statement from the following:
  9. Joints in concrete structures, are provided
  10. The main object of compaction of concrete, is:
  11. The effect of adding calcium chloride in concrete is (i) To increase shrinkage (ii) To decrease shrinkage…
  12. According to IS: 4561978, minimum slenderness ratio for a short column is
  13. M 150 grade of concrete approximates
  14. The load factors for live load and dead load are taken respectively as
  15. Which of the following statements is incorrect?
  16. For a continuous slab of 3 m × 3.5 m size, the minimum overall depth of slab to satisfy vertical…
  17. If the effective working time is 7 hours and per batch time of concrete is 3 minutes, the output of…
  18. In counterfort type retaining walls (i) The vertical slab is designed as a continuous slab (ii) The…
  19. Hydration of cement is due to chemical action of water with
  20. Due to circumferential action of the spiral in a spirally reinforced column
  21. The cement whose strength is a little lower than the ordinary cement during the first three months but…
  22. Workability of concrete is directly proportional to
  23. The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should…
  24. Pick up the correct statement from the following:
  25. Slump test of concrete is a measure of its
  26. According to IS: 4561978, the maximum reinforcement in a column is
  27. If 1500 g of water is required to have a cement paste 1875 g of normal consistency, the percentage of…
  28. How long will it take for the concrete to achieve 100% of its strength?
  29. Select the incorrect statement
  30. For a good concrete