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Experimental investigation on bond behaviour, durability and microstructural analysis of self-compacting concrete using waste copper slag

Experimental investigation on bond behaviour, durability and microstructural analysis of... This study will investigate the viability of SCC constructed using fine aggregates derived from waste copper slag (WCS). WCS replacement ranged from 0 to 70% (10% increments) with sand at constant W/C ratio of 0.43; eight SCC mixtures were prepared. The cement content was substituted with 17.85% fly ash (FA), and a consistent amount of superplasticizer was utilized for the experiment. Tests on SCC mixes included mechanical properties like compressive strength at 28, and 56 days, pull-out tests after 28 days of curing, and durability tests, including rapid chloride permeability test (RCPT), and water absorption, and sorptivity after 28 days of curing were tested. Results showed that maximum compressive strength was noticed for 40% WCS. In the pull-out test, the maximum pull-out load and bond stress are recorded at 40% and 50% WCS is 44.35kN, 44.3kN and 11.76 MPa, 11.54 MPa compared to the control concrete mix (WCS0%). In terms of longevity, there is a strong link between CMS and several other performance metrics. Scanning electron microscopy, XRD analysis, and energy dispersive spectroscopy were used to analyze the microstructure of concrete. WCS may be used as a substitute for fine aggregates in concrete up to 70% which can benefit the building industry. By using this method, copper slag may be safely disposed of without damaging the environment or requiring land management. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Building Pathology and Rehabilitation Springer Journals

Experimental investigation on bond behaviour, durability and microstructural analysis of self-compacting concrete using waste copper slag

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References (40)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
2365-3159
eISSN
2365-3167
DOI
10.1007/s41024-022-00224-8
Publisher site
See Article on Publisher Site

Abstract

This study will investigate the viability of SCC constructed using fine aggregates derived from waste copper slag (WCS). WCS replacement ranged from 0 to 70% (10% increments) with sand at constant W/C ratio of 0.43; eight SCC mixtures were prepared. The cement content was substituted with 17.85% fly ash (FA), and a consistent amount of superplasticizer was utilized for the experiment. Tests on SCC mixes included mechanical properties like compressive strength at 28, and 56 days, pull-out tests after 28 days of curing, and durability tests, including rapid chloride permeability test (RCPT), and water absorption, and sorptivity after 28 days of curing were tested. Results showed that maximum compressive strength was noticed for 40% WCS. In the pull-out test, the maximum pull-out load and bond stress are recorded at 40% and 50% WCS is 44.35kN, 44.3kN and 11.76 MPa, 11.54 MPa compared to the control concrete mix (WCS0%). In terms of longevity, there is a strong link between CMS and several other performance metrics. Scanning electron microscopy, XRD analysis, and energy dispersive spectroscopy were used to analyze the microstructure of concrete. WCS may be used as a substitute for fine aggregates in concrete up to 70% which can benefit the building industry. By using this method, copper slag may be safely disposed of without damaging the environment or requiring land management.

Journal

Journal of Building Pathology and RehabilitationSpringer Journals

Published: Dec 1, 2022

Keywords: Microstructure; Compressive strength; Waste copper slag; Chloride permeability; Water absorption; Sorptivity

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