Abstract
EFFECT OF CURING METHODS ON TENSILE STRENGTH OF GREEN CONCRETE CYLINDERS MADE WITH DEMOLISHING WASTE AS COARSE AGGREGATES
Bashir Ahmed Memon, Mahboob Oad*, Abdul Hafeez Buller, Ali Raza
ABSTRACT
Proper curing is one of the properties which ensures proper strength and durability of the concrete. This research article presents laboratory investigations on the effect of different curing methods on tensile strength of green concrete cylinders cast with 50% dosage of recycled aggregates from demolishing waste. Total of 30 cylinders were cast in six batches using normal mix concrete and 0.45 water to cement ratio. One batch of cylinders was cast with all-conventional aggregates to compare the results of proposed concrete. Other five batches were cured using standard water curing with potable water, open air, gunny bags, steam and waste water. All the specimens were cured for 28 days. After curing weight and tensile strength were determined following the ASTM standards. The comparison of the results reveals that curing of recycled aggregate concrete by gunny bags gives better results in terms of weight and tensile strength. Using curing by gunny bags the samples observed about 10% reduction in weight and 0.3% increase in average tensile strength.
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