Abstract
TENSILE STRENGTH OF NO-FINES RECYCLED AGGREGATE CONCRETE CYLINDERS
Bashir Ahmed Memon*, Ihsan Ali Rahoo, Mahboob Oad, Shakeel Ahmed Dahri and Sheeraz Ahmed Chandio
ABSTRACT
In this research paper tensile strength of no-fines recycled aggregate concrete is investigated. Total of 42 standard size cylinders are prepared in seven batches. Two curing ages 7- and 28-day are considered with half of the specimen in for each. One batch is cast with all-conventional aggregates whereas in rest of six batches recycled aggregates are used from 20% to 70% in increment of 10%. To ensure well graded aggregates sieve analysis of both types of aggregates in performed. Split tensile test is conducted to determine the tensile strength of the specimens. Comparison of the results shows decrease in the parameter with increase in the quantity of recycled aggregates. Maximum loss of strength of proposed concrete in comparison to control concrete is observed equal to 33% at highest replacement level of the coarse aggregates. Comparison of the results with those reported in literature for 50% replacement level shows 9% reduction. Based on the obtained results 20% replacement level is considered suitable for production of no-fines recycled aggregate concrete.
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