Effect Of Delayed Oven Dried Curing On Compressive Strength Of Geopolymer Concrete

S. V. Joshi, Dr. M. S. Kadu, "Effect Of Delayed Oven Dried Curing On Compressive Strength Of Geopolymer Concrete", IRT Proceeding on national conference on Innovative Approaches in Civil Engineering, 7-8 April, 2012, published by Indian research transaction, India

Conventional cement concrete usage around the world is second to water. Ordinary Portland cement (OPC) is conventionally used as primary binder to produce conventional OPC concrete. The amount of carbon dioxide released during the manufacture of OPC and the extent of energy required to produce OPC are the matters of environmental concern and poor availability of power. The efforts are being made on various fronts to address these issues. Fly-ash, abundantly available byproduct of coal fired thermal power stations, having no binding properties of its own, is now being widely used as an additive binding material in manufacture of concrete .Fly-ash with alkali activators can produce effective binding material, geo-polymer, through polymerization process which can be used to develop geo-polymer concrete (GPC). The characteristics of alkali activator, decides the quality of geo-polymer and therefore affects the important properties of plastic and hardened concrete. In the present work a mixture of sodium hydroxide solution and sodium silicate solution is used as alkali activator. The present paper deals with studying the effect of delayed oven dried curing on compressive strength of Geo-polymer concrete. The laboratory investigations provides that under hot air oven curing conditions, the compressive strength of geo-polymer concrete depend on the day of curing from the date of casting. It is optimum on fourth day of oven dried curing and oven dried curing substantially enhance the compressive strength of geo polymer concrete even in the last week of testing of sample as compared to ambient curing condition.

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©2012 Indian Research Transaction

Published by Research Publications, India