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  • Question
  • The condition not applicable to water cement ratio law, is


  • Options
  • A. internal moisture conditions on hydration continue till complete strength is gained
  • B. concrete specimens may be tested at any temperature
  • C. concrete specimens need be of same age
  • D. concrete specimens need be of same size
  • E. none of these.

  • Correct Answer
  • concrete specimens may be tested at any temperature 


  • Concrete Technology problems


    Search Results


    • 1. The void ratio of

    • Options
    • A. single size coarse aggregate is roughly 0.45.
    • B. graded coarse aggregate is roughly 0.040
    • C. fine aggregate is roughly 0.45
    • D. all the above.
    • Discuss
    • 2. Slump test of concrete is a measure ofits

    • Options
    • A. consistency
    • B. compressive strength
    • C. tensile strength
    • D. impact value.
    • Discuss
    • 3. For the construction of R.C.C. slabs, columns, beams, walls, etc. the grade of concrete mix used, is

    • Options
    • A. 1 : 3 : 6
    • B. 1 : : 3
    • C. 1 : 2 : 4
    • D. 1 : 1 : 2
    • E. 1 : 4 : 8.
    • Discuss
    • 4. Pick up the correct statement from the following:

    • Options
    • A. Calcium chloride acts as a retarder
    • B. Gypsum (calcium sulphate) acts as an accelerator
    • C. Gypsum (calcium sulphate) acts as a retarder
    • D. Calcium chloride acts as an accelerator
    • E. Both (c) and (d).
    • Discuss
    • 5. Pick up the correct statement from the following:

    • Options
    • A. High percentage of C3S and low percentage of C2S cause rapid hardening
    • B. High percentage of C3S and low percentage of C2S make the cement less resistive to chemical attack
    • C. Low percentage of C3S and high percentage of C2S contribute to slow hardening
    • D. Low percentage of C3S and high percentage of C2S provide greater resistance to chemical attack
    • E. All the above.
    • Discuss
    • 6. The type of aggregates not suitable for high strength concrete and for pavements subjected to tension, is

    • Options
    • A. rounded aggregate
    • B. irregular aggregate
    • C. angular aggregate
    • D. flaky aggregate
    • E. none of these.
    • Discuss
    • 7. Pick up the incorrect statement from the following:

    • Options
    • A. In properly graded aggregates, bulk density is more
    • B. In single size aggregates, bulk density is least
    • C. In single size aggregates, bulk density is maximum
    • D. None of these.
    • Discuss
    • 8. For preparing a test-specimen, it is necessary

    • Options
    • A. to mix cement and fine aggregate by dry hand
    • B. to mix coarse aggregates
    • C. to mix water to the cement, fine aggregates and coarse aggregates
    • D. to oil inner surface of the mould and the base plate, before placing concrete
    • E. all the above.
    • Discuss
    • 9. High temperature

    • Options
    • A. increases the strength of concrete
    • B. decreases the strength of concrete
    • C. has no effect on the strength of concrete
    • D. none of these.
    • Discuss
    • 10. The type of aggregates of same nominal size, which contain less voids when compacted, are

    • Options
    • A. rounded spherical
    • B. irregular
    • C. flaky
    • D. none of these.
    • Discuss


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