Floating Concrete III Year

20 Questions | Total Attempts: 109

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Floating Concrete III Year


Questions and Answers
  • 1. 
    Blaines air permeability method is used to determine
    • A. 

      Permeability of cement

    • B. 

      Fineness of cement

    • C. 

      Soundness of cement

    • D. 

      Remoulding effect

  • 2. 
    Vee-Bee consistency test is carried out to measure
    • A. 

      Permeability of cement

    • B. 

      Fineness of cement

    • C. 

      Setting time of cement

    • D. 

      Remoulding effect

  • 3. 
    Properly ground cement should have an specific surface of 
    • A. 

      1500 sq. cm per gram

    • B. 

      2000 sq. cm per gram

    • C. 

      2250 sq. cm per gram

    • D. 

      2450 sq. cm per gram

  • 4. 
    Quick setting cement is used 
    • A. 

      Under running water

    • B. 

      In mass concrete

    • C. 

      For interior decoration

    • D. 

      To impart architectural finish

  • 5. 
    Quick setting cement contains a higher percentage of
    • A. 

      Silicate

    • B. 

      Sulphate

    • C. 

      Lime

    • D. 

      Alumina

  • 6. 
    Quick setting cement hardens in
    • A. 

      5 minutes

    • B. 

      15 minutes

    • C. 

      30 minutes

    • D. 

      2 hours

  • 7. 
    Low heat cement contains lower percentage of
    • A. 

      C3A

    • B. 

      C3S

    • C. 

      Both (a) and (b)

    • D. 

      Neither (a) nor (b)

  • 8. 
    Low heat cement contains higher percentage of
    • A. 

      C2S

    • B. 

      C3S

    • C. 

      Both (a) and (b)

    • D. 

      Neither (a) nor (b)

  • 9. 
    Low heat cement is used in
    • A. 

      RCC slabs

    • B. 

      Columns

    • C. 

      Dams

    • D. 

      Tunnels

  • 10. 
    Sulphate resisting cement contains a small proportion of
    • A. 

      Silicate

    • B. 

      Tricalcium aluminates

    • C. 

      Dicalcium silicates

    • D. 

      Alumina

  • 11. 
    In soundness test, after immersing whole assembly in water for 24 hours, distance between the indicator points is measured
    • A. 

      Assembly then returned to water

    • B. 

      Brought to boiling in 25 to 30 minutes & boiled for 1 hour

    • C. 

      After cooling, distance between indicator points is again measured

    • D. 

      All of these

  • 12. 
    In soundness test, the difference between distance between indicator points before and after cooling should not be more than
    • A. 

      5 mm

    • B. 

      10 mm

    • C. 

      15 mm

    • D. 

      20 mm

  • 13. 
    In determining tensile strength of cement, test briquettes are made of
    • A. 

      Cement

    • B. 

      Sand

    • C. 

      Mortar

    • D. 

      Concrete

  • 14. 
    In determining tensile strength of cement, the ratio of cement and sand in mortar meant for test briquette is
    • A. 

      1:1

    • B. 

      1:2

    • C. 

      1:3

    • D. 

      1:6

  • 15. 
    In determining tensile strength of cement, the water content(by weight) used in mortar meant for test briquette is
    • A. 

      8% of cement and sand combined

    • B. 

      12% of cement and sand combined

    • C. 

      16% of cement and sand combined

    • D. 

      What required for standard consistency

  • 16. 
    Tensile strength of concrete is measured by
    • A. 

      Direct tension test in the universal testing machine

    • B. 

      Applying compressive load along the diameter of the cylinder

    • C. 

      Applying third point loading on a prism

    • D. 

      Applying tensile load along the diameter of the cylinder

  • 17. 
    The total surface area of one gram cement per square centimeters is known as
    • A. 

      Fineness

    • B. 

      Specific surface

    • C. 

      Specific volume

    • D. 

      None of these

  • 18. 
    Turbid meter test is used for measuring
    • A. 

      Setting time

    • B. 

      Soundness

    • C. 

      Tensile strength

    • D. 

      Specific surface

  • 19. 
    In turbid meter test, cement is kept in suspension in
    • A. 

      Petrol

    • B. 

      Diesel

    • C. 

      White kerosene

    • D. 

      Any of these

  • 20. 
    In the turbid meter test to determine fineness of cement
    • A. 

      A laser beam passes through the solution

    • B. 

      An X ray passes through the solution

    • C. 

      A ray of light passes through the solution

    • D. 

      None of these

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