Effect of Copper Slag on Micro, Macro, and Flexural Characteristics of Geopolymer Concrete
Publication: Journal of Materials in Civil Engineering
Volume 32, Issue 5
Abstract
The present investigation is mainly focused on the effect of copper slag (CS) on micro, macro, and flexural characteristics of geopolymer concrete (GPC). In this study, copper slag was used as a partial replacement of fine aggregates at different levels (0%, 20%, 40%, and 60%) by weight. Fly ash and ground granulated blast furnace slag (GGBS) were used as binders and a combination of sodium hydroxide (8 M) and sodium silicate solution were used for activating the binders. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) analyses were conducted to examine the microstructure of the GPC. In macrolevel studies, a compressive strength of GPC was determined, and prediction models were developed to assess the compressive strength using nondestructive testing (NDT) techniques. The load and moment characteristics of reinforced geopolymer concrete (RGPC) beams were also studied. From the results, it is concluded that the incorporation of CS shows better performance in the micro, macro, and flexural properties of GPC.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request.
Acknowledgments
The authors acknowledge the facilities provided by Jawaharlal Nehru Technological University, Anantapur, and Annamacharya Institute of Technology and Sciences, Tirupathi, for research works in the field of concrete technology at the Department of Civil Engineering. The authors also wish to express their gratitude to Astrra Chemicals in Chennai, India, for providing materials for this study.
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Published In
Journal of Materials in Civil Engineering
Volume 32 • Issue 5 • May 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Jun 17, 2019
Accepted: Oct 16, 2019
Published online: Feb 26, 2020
Published in print: May 1, 2020
Discussion open until: Jul 26, 2020
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