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Advanced Concrete Technology
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Advanced Concrete Technology
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25 Questions

1. Which test can be performed without skilled labour?
2. Fly ash affects the sulphate attack.
3. According to IRC:15-2011 _______% Fly ash is required to be replaced with the total cementitious materials.
4. According to IRC:15-2002 _______% Fly ash is required to be replaced with the total cementitious materials.
5. Approximate ratio of strength of the 30 cm cube to that of 15 cm cube is _____________
6. Rule (ruler/scale), capable of reading the dimensions of test specimens to an accuracy of ________
7. What is an external sulphates attack?
8. ____ cement is used for formwork that can be removed earlier and reused in other areas which save the cost of formwork.
9. Mid-range water reducers result in at least _________ %.
10. What is accelerator?
11. The range of the density for this concrete is ___________
12. Maximum size of aggregates should not be larger than ___________
13. The _________ compressive strength required from structural consideration.
14. What is the value of modulus of elasticity for Sulphur infiltered concrete?
15. In which type of test the capillary action principle is used?
16. According to IRC:15-2011, Minimum cement content for 4.5 N/mm2 characteristic flexural strength for OPC + fly ash mix OPC shall ____________
17. The aim of the designer should always be to get concrete mixtures of optimum strength at _________ cement content and ________ workability.
18. Calipers, capable of reading the dimensions of test specimens to an accuracy of ____________
19. Lowering of ____________ might also help, since this would reduce the amount of CH that forms.
20. Which cement contains a high percentage of C3S and less percentage of C2S?
21. According to size, aggregates is/are classified into __________ types.
22. Determine the amount of cement per unit volume of concrete from ______________
23. Approximate ratio of direct tensile strength to flexural strength is ____________
24. If compaction factor of concrete is .90, then workability is ____________
25. What is the approx. mix proportion for M20?

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