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  • Question
  • Pick up the incorrect statement from the following:


  • Options
  • A. The bottom and top ends of slump mould are parallel to each other
  • B. The axis of the mould is perpendicular to the end faces
  • C. The internal surface of the mould is kept clean and free from set cement
  • D. The mould is in the form of a frustum of hexagonal pyramid
  • E. None of these.

  • Correct Answer
  • The mould is in the form of a frustum of hexagonal pyramid 


  • Concrete Technology problems


    Search Results


    • 1. The percentage of the aggregate of F.M. 2.6 to be combined with coarse aggregate of F.M. 6.8 for obtaining the aggregates of F.M. 5.4, is

    • Options
    • A. 30%
    • B. 40%
    • C. 50%
    • D. 60%.
    • Discuss
    • 2. The compaction of concrete, improves

    • Options
    • A. density
    • B. strength
    • C. durability
    • D. all the above.
    • Discuss
    • 3. An aggregate is said to be flaky, if its least dimension is less than

    • Options
    • A. 2/3 mean dimension
    • B. 3/4 mean dimension
    • C. 3/5 mean dimension
    • D. 5/8 mean dimension
    • E. none of these.
    • Discuss
    • 4. Pick up the correct statement from the following i.

    • Options
    • A. Higher workability indicates unexpected increase in the moisture content
    • B. Higher workability indicates deficiency of sand
    • C. If the concrete mix is dry, the slump is zero
    • D. Concrete mix having zero slump, is unsuitable for high strength.
    • E. All the above.
    • Discuss
    • 5. Shrinkage in concrete can be reduced by using

    • Options
    • A. low water cement ratio
    • B. less cement in the concrete
    • C. proper concrete mix
    • D. presaturated aggregates
    • E. all the above.
    • Discuss
    • 6. C.R.R.I. charts are used to obtain a relatioship between strength of concrete and

    • Options
    • A. water cement ratio
    • B. workability
    • C. grading of aggregate
    • D. fineness modulus
    • E. none of these.
    • Discuss
    • 7. Proper batching ensures

    • Options
    • A. economy
    • B. durability
    • C. workability
    • D. strength
    • E. all the above.
    • Discuss
    • 8. If the depth of moist sand in a cylinder is 15 cm and the depth of the sand when fully inundated with water is 12 cm, the bulking of the moist sand, is

    • Options
    • A. 10%
    • B. 12%
    • C. 15%
    • D. 20%
    • E. 25%.
    • Discuss
    • 9. Water required per bag of cement, is

    • Options
    • A. 7 kg
    • B. 14 kg
    • C. 21 kg
    • D. 28 kg
    • E. 35 kg
    • Discuss
    • 10. Addition of pozzolana to ordinary port land cement, causes

    • Options
    • A. decrease in early strength
    • B. reduction in chemical action with sulphates
    • C. increase in shrinkage
    • D. reduction bleeding
    • E. all the above.
    • Discuss


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