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  • Question
  • Permissible compressive strength of M 200 concrete grade is


  • Options
  • A. 100 kg/cm2
  • B. 150 kg/cm2
  • C. 200 kg/cm2
  • D. 250 kg/cm2
  • E. 300 kg/cm2

  • Correct Answer
  • 200 kg/cm2 


  • Concrete Technology problems


    Search Results


    • 1. Cement used for normal concrete construction, is obtained by burning a mixture of

    • Options
    • A. silicious and argillaceous materials
    • B. argilaceous and calcareous materials
    • C. silicious and catcareous materials
    • D. silicious, argillaceous and calcareous materials
    • E. none of these.
    • Discuss
    • 2. For preparing ordinary concrete, the quantity of water used, is

    • Options
    • A. 5% by weight of aggregates plus 20% of weight of cement
    • B. 10% by weight of aggregates plus 10% of weight of cement
    • C. 5% by weight of aggregates plus 30% of weight of cement
    • D. 30% by weight of aggregates plus 10% of weight of cement
    • E. none of these.
    • Discuss
    • 3. Pick up the incorrect statement from the following. While performing preliminary test on concrete

    • Options
    • A. proportions of the material and water should be the same as to be used at the work site
    • B. cement should be mixed by hand in order to maintain uniformity
    • C. concrete mix should be stored in air-tight containers
    • D. concrete ingredients should be kept at a temperature of 37° ± 2°C
    • E. none of these.
    • Discuss
    • 4. A concrete having a slump of 6.5 cm, is said to be

    • Options
    • A. dry
    • B. earth moist
    • C. semi-plastic
    • D. plastic
    • E. none of these.
    • Discuss
    • 5. The entrained air in concrete

    • Options
    • A. increases workability
    • B. decreases workability
    • C. decreases resistance to weathering
    • D. increases strength
    • E. neither affects workability nor strength.
    • Discuss
    • 6. The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be

    • Options
    • A. between 150 to 300 kg/cm2
    • B. between 350 to 600 kg/cm2
    • C. between 150 to 500 kg/cm2
    • D. below 200 kg/cm2
    • E. none of these.
    • Discuss
    • 7. Strength of concrete with passage of time

    • Options
    • A. increases
    • B. decreases
    • C. fluctuates
    • D. remains constant.
    • Discuss
    • 8. Setting time of cement increases by adding

    • Options
    • A. gypsum
    • B. hydrogen peroxide
    • C. calcium chloride
    • D. sodium oxide
    • E. none of these.
    • Discuss
    • 9. A flaky aggregate is said to be elongated if its length is

    • Options
    • A. equal to the mean size
    • B. twice the mean size
    • C. thrice the mean size
    • D. four times the mean size
    • E. five times the mean size.
    • Discuss
    • 10. Higher workability of concrete is required if the structure is

    • Options
    • A. made with cement concrete
    • B. thick and reinfored
    • C. thin and heavily reinforced
    • D. thick and heavily reinfored.
    • Discuss


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