Use of Copper Slag for Partial Replacement to Fine Aggregate in Concrete
R. Elamaran1, K. Srinivasan2, S. Vimala3
1R. Elamaran, First Year Post Graduate Student, Department of Civil Engineering, PSNA College of Engineering and Technology, Dindigul (Tamil Nadu), India.
2K. Srinivasan, Assistant Professor, Department of Civil Engineering, PSNA College of Engineering and Technology, Dindigul (Tamil Nadu), India.
3S. Vimala, Professor, Department of Civil Engineering, PSNA College of Engineering and Technology, Dindigul (Tamil Nadu), India.
Manuscript received on 26 April 2019 | Revised Manuscript received on 03 May 2019 | Manuscript Published on 08 May 2019 | PP: 559-564 | Volume-7 Issue-5S3 February 2019 | Retrieval Number: E11990275S19/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Copper slag is an excellent by-product or waste material which retains its original properties. Due to its chemical composition which includes high iron, silica and aluminum oxide content, it can be used as a partial replacement for sand in concrete mixes. Mix design of concrete is done on weight basis, by adding various percentages of copper slag (10%, 15%, 20%, 25%, 30% and 35%) instead of sand and concrete mixtures were prepared based on it. The cube, beam and cylindrical specimens were then prepared, demoulded after 24 hours and properly cured. The specimens were subjected to compression testing, split tensile strength testing and flexural testing at 7 and 28 days. It was observed from the test results that the compressive strength of the specimens was higher than the control specimen on adding 10 to 30% of copper slag and on further increasing it, the compressive strength was observed to be reducing. In particular, 10% addition gave more strength than 30% addition. Delay in hardening of concrete specimens was observed. Replacement of copper slag increased the self-weight of the specimens of about 15%.
Keywords: Copper Slag, Compressive Strength, Fine Aggregates, Hardening, Self-Weight of Concrete.
Scope of the Article: Concrete Structures