Discussion
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- Question
After casting, an ordinary cement concrete on drying
Options- A. expands
- B. mix
- C. shrinks
- D. none of these.
- Correct Answer
- shrinks
- 1. The bulk density of aggregates does not depend upon :
Options- A. size and shape of aggregates
- B. specific gravity of aggregates
- C. grading of aggregates
- D. size and shape of the container
- E. none of these. Discuss
- 2. If X, Y and Z are the fineness modulli of coarse, fine and combined aggregates, the percentage (P) of fine aggregates to combined aggregates, is
Options- A.
- B.
- C.
- D.
- E.
Discuss
- 3. Pick up the correct proportions of chemical ingredients of cement
Options- A. Lime : Silica : Alumina : Iron oxide : 63 : 22 : 6 : 3
- B. Silica : Lime : Alumina : Iron oxide : 63 : 22 : 6 : 3
- C. Alumina : Silica : Lime : Iron oxide : 63 : 22 : 6 : 3
- D. Iron oxide : Alumina : Silica : Lime : 63 : 22 : 6 : 3 Discuss
- 4. For road pavements, the cement generally used, is
Options- A. ordinary Portland cement
- B. rapid hardening cement
- C. low heat cement
- D. blast furnace slag cement
- E. none of these. Discuss
- 5. For the construction of cement concrete floor, the maximum permissible size of aggregate, is
Options- A. 4 mm
- B. 6 mm
- C. 8 mm
- D. 10 mm
- E. 12 mm Discuss
- 6. The preliminary test is repeated if the difference of compressive strength of three test specimens, exceeds
Options- A. 5 kg/cm2
- B. 8 kg/cm2
- C. 10 kg/cm2
- D. 12 kg/cm2
- E. 15 kg/cm2 Discuss
- 7. According to I.S. : 456, the number of grades of concrete mixes, is
Options- A. 3
- B. 4
- C. 5
- D. 6
- E. 7 Discuss
- 8. Workability of concrete is measured by
Options- A. Vicat apparatus test
- B. Slump test
- C. Minimum void method
- D. Talbot Richard test. Discuss
- 9. The equation which is obtained by multiplying each equation by the coefficient of its un-knowns and by adding the equations thus formed, is known as
Options- A. observation equation
- B. conditional equation
- C. normal equation
- D. none of these. Discuss
- 10. Polaris is usually observed for the determination of the azimuth when it is
Options- A. at culmination
- B. at elongation
- C. neither at culmination nor at elongation
- D. either at culmination or at elongation. Discuss
Concrete Technology problems
Search Results
Correct Answer: size and shape of the container
Correct Answer:
Correct Answer: Lime : Silica : Alumina : Iron oxide : 63 : 22 : 6 : 3
Correct Answer: rapid hardening cement
Correct Answer: 10 mm
Correct Answer: 15 kg/cm2
Correct Answer: 7
Correct Answer: Slump test
Correct Answer: normal equation
Correct Answer: at elongation
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