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  • Question
  • Vicat apparatus is used for


  • Options
  • A. fineness test
  • B. consistency test
  • C. test for setting time
  • D. test for tensile strength
  • E. none of these.

  • Correct Answer
  • consistency test 


  • Concrete Technology problems


    Search Results


    • 1. An aggregate which passes through 25 mm I.S. sieve and is retained on 20 mm sieve, is said to be flaky if its least dimension is less than

    • Options
    • A. 22.5 mm
    • B. 18.5 mm
    • C. 16.5 mm
    • D. 15.5 mm
    • E. 13.5 mm.
    • Discuss
    • 2. According to IS : 382-1963, a good aggregate should be

    • Options
    • A. chemically inert
    • B. sufficiently strong
    • C. hard and durable
    • D. all the above.
    • Discuss
    • 3. Expansion joints are provided if the length of concrete structures exceeds

    • Options
    • A. 10 m
    • B. 15 m
    • C. 15 m
    • D. 35 m
    • E. 45 m
    • Discuss
    • 4. If P, Y and Z are the weights of cement, fine aggregates and coarse aggregates respetively and W/C is the water cement ratio, the minimum quantity of water to be added to first batch, is obtained by the equation

    • Options
    • A. 0.1P + 0.3Y + 0.1Z = W/C x P
    • B. 0.3P + 0.1Y + 0.01Z = W/C x P
    • C. 0.4P + 0.2Y + 0.01Z = W/C x P
    • D. 0.5P + 0.3Y + 0.01Z = W/C x P
    • E. 0.2P + 0.5Y + 0.1Z = W/C x P
    • Discuss
    • 5. 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
    • 6. If fineness modulus of sand is 2.5, it is graded as

    • Options
    • A. very fine sand
    • B. fine sand
    • C. medium sand
    • D. coarse sand
    • E. very coarse sand.
    • Discuss
    • 7. For the construction of the retaining structures, the type of concrete mix to be used, is

    • Options
    • A. 1 : 3 : 6
    • B. 1 : 2 :4
    • C. 1 : : 3
    • D. 1 : l : 2
    • E. 1 : 4 : 8.
    • Discuss
    • 8. Pozzolanic properties exist in

    • Options
    • A. shales
    • B. fly ash
    • C. pumicite
    • D. diatomaceous clay
    • E. all the above.
    • Discuss
    • 9. If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60 mm, the particular aggregate will be flaky if its minimum dimension is less than

    • Options
    • A. 20.5 mm
    • B. 30.5 mm
    • C. 40.5 mm
    • D. 50.5 mm
    • E. none of these.
    • Discuss
    • 10. Workability improved by adding

    • Options
    • A. fly ash
    • B. hydrated lime
    • C. calcium chloride
    • D. bentonite
    • E. all the above.
    • Discuss


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