Which of the following statements regarding concrete is incorrect? (a) The matrix of concrete is cement, which hardens by hydration reactions of calcium silicates. (b) The modulus of concrete follows an inverse law of mixtures between the volume fracture of aggregate and the volume fraction of cement. (c) The compressive strength of concrete develops in two stages - an initial setting reaction, which occurs over a period of hours, and a hardening reaction, which may continue for many months. (d) The rate of the hardening reaction is controlled by the rate at which water evaporates from the concrete and so the hardening reaction is temperature dependent. (e) The final compressive strength of concrete depends on the initial water/cement ratio and decreases at high water/cement ratios.

Which of the following statements regarding concrete is incorrect? (a) The matrix of concrete is cement, which hardens by hydration reactions of calcium silicates. (b) The modulus of concrete follows an inverse law of mixtures between the volume fracture of aggregate and the volume fraction of cement. (c) The compressive strength of concrete develops in two stages - an initial setting reaction, which occurs over a period of hours, and a hardening reaction, which may continue for many months. (d) The rate of the hardening reaction is controlled by the rate at which water evaporates from the concrete and so the hardening reaction is temperature dependent. (e) The final compressive strength of concrete depends on the initial water/cement ratio and decreases at high water/cement ratios.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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