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Civil Engineering Mcqs — Test 14

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Question 1
According to IS : 456 -1978, the modulus of elasticity of concrete Ec (in N/mm2) can be taken as______________?
Question 2
The most commonly used admixture which prolongs the setting and hardening time is_______________?
Question 3
The strength of concrete after one year as compared to 28 days strength is about_______________?
Question 4
Admixtures which cause early setting, and hardening of concrete are called_______________?
Question 5
Increase in the moisture content in concrete_________________?
Question 6
The relation between modulus of rupturefcr and characteristic strength of concrete fck is given by_______________?
Question 7
The approximate value of the ratio between direct tensile strength and flexural strength is_____________?
Question 8
Air entrainment in the concrete increases________________?
Question 9
Workability of concrete is inversely pro¬portional to______________?
Question 10
The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called________________?