A Study on Effective Replacement of Fine Aggregate Using Copper Slag

Author(s):

S.JAYA PRADEEP , KNOWLEDGE INSTITUTE OF TECHNOLOGY; S. Haribaskaran, KNOWLEDGE INSTITUTE OF TECHNOLOGY; M. R. Amarnaath, KNOWLEDGE INSTITUTE OF TECHNOLOGY; R. A. Kavin, KNOWLEDGE INSTITUTE OF TECHNOLOGY; P. Dinesh, KNOWLEDGE INSTITUTE OF TECHNOLOGY

Keywords:

Concrete, Copper slag, Density, Compression strength

Abstract:

In This paper we have experimented and investigate the effect of copper slag by replacing it with the fine aggregates and studied the properties of concrete. For the experiment we have prepared five mix designs with different proportions of copper slag ranging from 0% (for the control mix) to 35% and 100%. Concrete mixes were evaluated for density, compressive strength, tensile strength, flexural strength and durability. The results indicate that there is an increase in the concrete density of nearly 5% with the increase of copper slag content, whereas the workability increased rapidly with increases in copper slag percentage. Addition of up to 35% of copper slag as sand replacement has a comparable strength with that of the control mix. However, further additions of copper slag caused reduction in the strength due to an increase of the free water content in the mix. Mixes with 100% copper slag replacement gave the lowest compressive strength value of approximately 50 MPa, which is almost 16% lower than the strength of the control mix. The results also demonstrated that the surface water absorption decreased as copper slag quantity increases up to 35% replacement; beyond that level of replacement, the absorption rate increases rapidly. Therefore, it is recommended that 40 wt. % of copper slag can used as replacement of sand in order to obtain concrete with good strength and durability properties.

Other Details:

Manuscript Id	:	IJSTEV1I10068
Published in	:	Volume : 1, Issue : 10
Publication Date	:	01/05/2015
Page(s)	:	227-231

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