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Influence of SRA on Strength at Different Moisture Condition on Concrete – A Review

G. Divya Anusree, Bikram Prasad

Abstract


The artificial mix of cementing material, fine and coarse aggregates and water is known as concrete which is the most widely used construction material all over the world. In the process of construction of any concrete structure, all the above ingredients are firstly mixed, and then transported to the site, placing is done and afterwards curing is till it gains the desired strength. The curing process helps in retaining the amount of moisture required for the complete hydration process to achieve its strength. It can be either provided externally or internally. Self-restoring concrete or inner relieving is a method which lessens the vanishing of water from solid surface, and holds water in it for a more drawn out period. This can be achieved by using any of following agents such as, saturated light weight aggregate, shrinkage reducing agents, wood powder etc. In this research work, a SRA named polyethylene glycol (PEG-400) is mixed in concrete mix of M25 and M45 at various proportions by weight of cement from 0.5% to 2.5% and the result is of compared to that of normal conventional concrete, with a control on the temperature content at the time of curing. Also what percentage of the SRA will give higher compressive strength is observed.

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References


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