Discuss the cement hydration process and its importance in developing the strength of concrete. Explain how...

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Civil Engineering

Discuss the cement hydration process and its importance indeveloping the strength of concrete. Explain how it works accordingto the stages (dormant,setting,hardening stages). Discuss thesetting time, its importance in concreting, and a practicalsolution to delay the initial setting time. Explain how the cementfineness, water-to-cement ratio, and curing temperature can promoteor hinder the hydration.

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4.1 Ratings (706 Votes)

Generally the dry cement doesnt get bind together and aquirestrength with fine or coarse aggregatesIt aquires the adhesiveproperty only when it is mixed with waterThe chemical reactionstaking place when water is added to cemnt is known as hydration ofcementThe cement particle contains some compounds such astricalcium silicateC3SdicalciumsilicateC2Stricalcium aluminateC3A andtetra calcium alumino ferrateC4AF these compoundsreacts with water the hydration of cement takes placeHydration isone of the most important property of a cement that is usuallyconsidered while selecting cement for different constructionworksLet us have a detail analysis of the hydration processWhenwater is added to a cement mixture the hydration products such astobermorite gel3CaOSiO24H2Ocalciumhydroxide and some minor compounds slowly starts depositingon the outer periphery of the nucleaus of the hydrated cementmoleculesAs the hydration proceeds further the hydration productsslowly started to deposit on the orginal cement grainsThis makesthe diffusion of water to unhydrated nucleus more and moredifficultThis reduces the rate of hydrationThen gradually thehydration products occupy the See Answer

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