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- Question
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.
- Correct Answer
- rapid hardening cement
- 1. 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
- 2. Pick up the correct statement from the following:
Options- A. Insufficient quantity of water makes the concrete mix harsh
- B. Insufficient quantity of water makes the concrete unworkable
- C. Excess quantity of water makes the concrete segregated
- D. Excess quantity of water causes bleeding in concrete
- E. All the above. Discuss
- 3. The maximum amount of dust which may be permitted in aggregates is
Options- A. 5% of the total aggregates for low workability with a coarse grading
- B. 10% of the total aggregates for low workability with a fine grading
- C. 20% of the total aggregates for a mix having high workability with fine grading
- D. all the above. Discuss
- 4. For quality control of Portland cement, the test essentially done is
Options- A. setting time
- B. soundness
- C. tensile strength
- D. consistency
- E. all the above. Discuss
- 5. Construction joints are generally provided in concrete
Options- A. roads
- B. retaining walls
- C. lining of canals
- D. lining of tunnels
- E. all the above. Discuss
- 6. 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
- 7. 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
- 8. 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
- 9. After casting, an ordinary cement concrete on drying
Options- A. expands
- B. mix
- C. shrinks
- D. none of these. Discuss
- 10. 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
Concrete Technology problems
Search Results
Correct Answer: 10 mm
Correct Answer: All the above.
Correct Answer: all the above.
Correct Answer: all the above.
Correct Answer: all the above.
Correct Answer: Lime : Silica : Alumina : Iron oxide : 63 : 22 : 6 : 3
Correct Answer:
Correct Answer: size and shape of the container
Correct Answer: shrinks
Correct Answer: 15 kg/cm2
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