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Title: Studies on Fresh and Hardened Properties of Recycled Aggregate Concrete with Quarry Dust

Author(s): Revathi Purushothaman and Sasikala Mani

Publication: Materials Journal

Volume: 111

Issue: 3

Appears on pages(s): 283-290

Keywords: quarry dust; recycled aggregate concrete; resource conservation recycled aggregate

DOI: 10.14359/51686507

Date: 5/1/2014

Abstract:
Recycled aggregate obtained from crushed concrete rubble can be reused in building industry, instead of being stored. An attempt has been made to study the possibility of reusing the recycled concrete aggregate from demolished structures in the place of fresh natural aggregate. The basic properties of aggregates, such as water absorption, specific gravity, and bulk density, and mechanical properties, such as crushing value, impact value, and abrasion resistance, were considered. Twelve series of mixtures comprising reference concrete with natural aggregate and 100 recycled concrete aggregate with natural fine aggregate replaced with quarry dust ranging from 10 to 100% were prepared for this study. All these mixtures were designed for M30 grade (fc′= 24 MPa [3480 psi]) of concrete. Workability of fresh concrete and strength parameters of hardened concrete, such as compressive strength and tensile strength, were studied. In this work, a comparison was made between the results of a laboratory investigation on various physical properties of concrete made with 100% recycled aggregate concrete and 100% natural aggregate concrete and found that the results are encouraging to use this 100% recycled aggregate concrete with quarry dust.