【Daily Topic】【Civil Engineering Version 20160503】
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This post was last edited by hesonchang214 on 2016-5-3 07:22. Reward for participation: 2 wealth points. Reward for correct answer: 9 Wealth. The main reason for cracks appearing early in large-volume concrete is ( ). A. A temperature difference exists with the inside of the concrete element being cooler than the outside. B. A temperature difference exists with the inside of the concrete element being warmer than the outside. C. There is significant restraint between the concrete element and its base, resulting in high tensile stress. D. The water-cement ratio of the concrete is too high
A. Temperature difference between the inside and outside of concrete components, with the inside being cooler and the outside hotter
The main reason for the early appearance of cracks in mass concrete is (B). A. A temperature difference exists with the inside of the concrete element being cooler than the outside. B. A temperature difference exists with the inside of the concrete element being warmer than the outside. C. There is significant restraint between the concrete element and its base, resulting in high tensile stress. D. The water-cement ratio of the concrete is too high
B. Temperature difference between the inside and outside of concrete components
B. Temperature difference between the inside and outside of concrete components
B. Temperature difference between the inside and outside of concrete components
B. Temperature difference between the inside and outside of concrete components
I choose B: a temperature difference exists, with the interior of the concrete components being hotter while the exterior is colder