Sequeira, Kenneth and Naik, Raghu H and Pai, B.H.V (2015) Use of superabsorbent polymers in internally cured concrete-a review. International Research Journal of Engineering and Technology, 2 (3). pp. 1593-1595. ISSN 2395-0072

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Abstract

Internal Curing of Concrete has been a topic of considerable interest to researchers in the last couple of years coinciding with the growing demand of high strength concrete (HSC) in construction. In HSC the rate of absorption of water into the concrete microstructure is more than the rate at which water gets absorbed into the concrete matrix. This is a problem which prevents conventional methods of curing of water from being successfully implemented in HSC. Therefore we turn to alternate materials which can absorb, hold and supply water as required, and which also fulfill the role of aggregate such as lightweight aggregate or with the use of superabsorbent polymers (SAP). We could also use shrinkage reducing admixtures like polyethylene-glycol. The water molecules present in these materials are pulled out due to the pressure created in the concrete matrix as water is used up during the curing process. This is also a useful tool for areas where conventional curing is very difficult such as extreme climatic conditions which can lead to excessive evaporation and freezing. Also it will save water losses at sites, which is a growing concern in the construction business as we move towards a more efficient use of our limited resources.

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