a study on strength and durability of self curing concrete using polyethylene glycol-400
Azhagarsamy,Sundararaman
Published in International Journal of Advanced Research in Civil,Structural,Environmental and Infrastructure Engineering and Developing
ISSN: 2320-723X Impact Factor:1.7 Volume:3 Issue:1 Year: 05 July,2016 Pages:230-233
Abstract
Conventional concrete need water curing for a minimum of 28 days to achieve its target strength. Hence water curing is very much essential to prevent unsatisfactory properties of cement concrete. In order to have good curing, excess of evaporation from the surface need to be prevented. Self-curing concrete is one of the special concretes which is gaining importance in recent days as it avoids errors which were caused by human, structures which are not accessible, terrains where curing becomes difficult and in places where the fluoride content badly influences the property of concrete. This kind of curing technique can widely be practiced in places where there is scarcity of water. Polyethylene glycol is non-toxic, odorless, neutral, lubricating, non-volatile and non-irritating and is used in a variety of pharmaceuticals. Thus, it is a shrinkage reducing admixture. The aim of this investigation is to study the strength and durability properties of concrete using water soluble Polyethylene Glycol (PEG 400) as self-curing agent using M20 grade concrete. The compressive strength at 3 days, 7days and 28 days have been obtained with normal curing and self curing condition. It was found that an average increase in compressive strength of 12.73% and split tensile strength 13.31% with 5% of PEG-400 was observed. This shows that self curing concrete showed a better performance than the conventional concrete. An average increase of 10.68, 16.07 and 7.78% were observed when the self curing concrete with PEG 400 was exposed to HCl, H2SO4 and NA2SO4 solutions. Thus the self curing concrete ensures a remarkable effect on strength and durable property.
Kewords
Compressive Strength, Durability, PEG-400, Self-Curing Concrete, Split Tensile Strength, Water Retention.
Reference
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