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  • Question
  • To hydrate 500kg of cement full water needed, is


  • Options
  • A. 100 kg
  • B. 110 kg
  • C. 120 kg
  • D. 130 kg
  • E. 140 kg

  • Correct Answer
  • 130 kg 


  • Concrete Technology problems


    Search Results


    • 1. The factor which affects workability, is

    • Options
    • A. water content and its temperature
    • B. shape and size of the aggregates
    • C. grading and surface textures of the aggregates
    • D. air entraining agents
    • E. all the above.
    • Discuss
    • 2. According to Water-Cement Ratio Law, the strength of workable plastic concrete

    • Options
    • A. depends upon the amount of water used in the mix
    • B. does not depend upon the quality of cement mixed with aggregates
    • C. does not depend upon the quanity of cement mixed with aggregates
    • D. all the above.
    • Discuss
    • 3. Concrete containing

    • Options
    • A. silicious aggregates, has higher co-efficient of expansion
    • B. igneous aggregates, has intermediate coefficient of expansion
    • C. lime stones, has lowest co-efficient of expansion
    • D. All the above.
    • Discuss
    • 4. While designing an air entrained concrete

    • Options
    • A. water cement ratio is reduced
    • B. proportion of aggregates is reduced
    • C. an allowance for the entrained air is made
    • D. strength of the concrete, is reduced
    • E. all the above.
    • Discuss
    • 5. Allowable shear strength of concrete, depends upon

    • Options
    • A. shear strength
    • B. tensile strength
    • C. compressive strength
    • D. none of these.
    • Discuss
    • 6. Pick up the incorrect statemnt from the following. For performing compressive strength test of cement

    • Options
    • A. cement and standard sand mortar are used in the ratio of 1 : 3
    • B. water is added at the rate of + 3.0 percentage of water where P is the percentage of water for standard consistency
    • C. A cube mould of 10 cm x 10 cm x 10 cm is used
    • D. The perpared moulds are kept in a atmosphere of 50% relative humidity
    • E. The temperature of water in the submerged tank for curing moulds, should be 27° ± 2°C.
    • Discuss
    • 7. To obtain a very high strength concrete, use very fine grained

    • Options
    • A. Granite
    • B. Magnetite
    • C. Barite
    • D. Volcanic scoria.
    • Discuss
    • 8. Separation of water or water sand cement from a freshly concrete, is known

    • Options
    • A. bleeding
    • B. creeping
    • C. segregation
    • D. flooding
    • E. none of these.
    • Discuss
    • 9. An ordinary Portland cement when tested for its fineness, should not leave any residue on I.S. seive No. 9, more than

    • Options
    • A. 5%
    • B. 10%
    • C. 15%
    • D. 20%
    • E. 25%
    • Discuss
    • 10. Workability of concrete mix with low water cement ratio is determined by

    • Options
    • A. tensile strength test
    • B. slump test
    • C. compaction factor test
    • D. flexural strength test
    • E. none of these.
    • Discuss


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