Hydration of cement is a complex reaction, which is yet not fully understood. Moreover, there is always demand to complete the projects as early as possible without compromising on the quality. According to generally accepted engineering standards, concrete is:
· Brittle and very weak in flexural and tensile strength.
· Prone to early-age plastic shrinkage and settlement cracking
· Prone to long-term cracking due to thermal expansion and contraction
· Likely to explode (spall) when subjected to the extreme heat.
· Weaker, when excess water is added to improve workability.
All of which can weaken the long-term integrity and performance of the concrete.
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