Title: Stimulus on strength and durability of granite powder in the waste-based masonry units with copper slag and crumb rubber as partial substitute of fine aggregate

Authors: S. Praburanganathan; S. Chithra

Addresses: School of Civil Engineering, REVA University, Bangalore, India ' Department of Civil Engineering, Government College of Technology, Coimbatore – 641013, Tamil Nadu, India

Abstract: In this research, an extensive experiment was made to utilise industrial waste rejects for the production of bricks via a pressing technique in a factory-controlled environment. A total of 650 bricks were cast and each brick's recipe consists of a fixed percentage of primary raw materials akin to lime and gypsum. Along with granite powder as partly substituted for fly ash composed with copper slag and crumb rubber as a partial replacement with stone dust were used in different percentages. A range of mechanical, durability, morphology, FTIR and UPV studies are presented. The investigations reveal that the bricks of a prototype mix design using granite waste and copper slag using an optimum percentage of fly ash and lime-gypsum binder provide better strength and durability. The advantage of the proposed bricks is twofold: having utilised sustainable wastes make an eco-friendly product; the developed product can be used for load-bearing structural elements.

Keywords: brick; granite waste; copper slag; crumb rubber; strength; durability; masonry units; industrial waste rejects; ultrasonic pulse velocity.

DOI: 10.1504/IJMRI.2022.123725

International Journal of Masonry Research and Innovation, 2022 Vol.7 No.4, pp.366 - 394

Received: 11 Feb 2021
Accepted: 22 Apr 2021

Published online: 01 Jul 2022 *

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