c)  20 to 25% more Select your answer based on the coding system given below, a) reducing the proportions of C3A and C3S, b) increasing the proportions of C3A and C3S, Reason R : The rate of heat development is low in rapid hardening cement. where fcr and fck are in N/mm2′ b)  30 m d)  decreased by 25% for bars in com-pression The slab is designed as one way if the ratio of long span to short span is a)  top face perpendicular to wall a)  is maximum at neutral axis According to IS : 456-1978, the cblumn or the strut is the member whose effective length is greater than Ans: c, 34. b)  inversely proportional to compressive strength b)  using thinner bars but more in number Ans: d, 87. It is recommended to practice great cautions to ensure that poisson’s ratio is compatible with values used for shear modulus of elasticity of concrete otherwise serious errors may be encountered. c)  30% Stress strain curve of high tensile steel d)  all of the above The main reinforcement in the toe of a T- shaped R C. retaining wall is provided on b)  4 a) aggregate cement ratio a)  0.03% iii) reduces the positive moment at centre of span c) decreases with richer mixes. Increase in the moisture content in con-crete High carbon content in the steel causes iv) Factor of safety for concrete should be based on its ultimate stress. and Poisson's ratio are reported. 28. (d) all the above, 9. a)  the least lateral dimension of the member Modulus of rupture of concrete is a measure of Ans: b, 25. c)  capacity of column is decreased but ductility of column increases c)  provided more on inner face than on front face The  correct answer is a)  less than 12 b)  ductility of column reduces a)  Long line method Concrete grows with age. Ans: b, 151. Poisson’s ratio for concrete_____? d)  all of the above b)  under-reinforced beam a)  the least lateral dimension c)  higher tensile strength of steel Ans: a, 110. (d) none of these, 7. Ans:b, 136. d)  3.0 Poisson's ratio for concrete: A. remains constant: B. increases with richer mixes: C. decreases with richer mixes: D. none of the above View Answer Workspace Report Discuss in Forum. Ans: a, 48. b)  calcium chloride a)  to decrease it (d) none of the these, 4. Ans: a, 29. c)  between 18 and 24 iv) the heel slab is designed as a cantilever i)    humidity of atmosphere Ans: b, 35. Finer grading of cement only effects the early strength of the concrete. b)  there will be no differential settlement b)  30 3. (c) both (a) and (b) above d) High tensile steel is cheaper than mild steel. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced.

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