Q21. What is the effect of increasing water content in concrete?
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Q22. Which of the following is a mineral admixture?
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Q23. What does concrete maturity indicate?
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Q24. Which method tests concrete durability?
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Q25. Which test detects cracks in concrete non-destructively?
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Q26. In mix design, the primary objective is:
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Q27. Which concrete is resistant to chemical attack?
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Q28. Which is a special concrete type?
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Q29. Which construction chemical improves concrete waterproofing?
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Q30. Which factor influences concrete permeability?
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Q31. Slump test fails to assess:
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Q32. Which admixture accelerates concrete setting?
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Q33. Which type of aggregate has highest durability?
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Q34. The typical water-cement ratio range for normal concrete is:
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Q35. Concrete with entrained air is better in:
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Q36. Which material is a common coarse aggregate?
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