Use of Copper Tailings as the Partial Replacement of Sand in Concrete
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 12
Abstract
In India, 4 million tons of copper tailings produce every year, out of which 25,000 tons produce in Khetri Copper Mines, Khetri, and Rajasthan. This research was undertaken to study the effects of copper mine tailings as a replacement of sand on the properties of concrete and also to bring the alternative aggregates for the future. Structural materials depend on natural aggregates; it has been depleted for the last few decades due to the excessive demand from the construction industries and increasing population. The effects of replacing sand by copper tailings on the compressive strength of concrete, workability, water permeability and initial surface absorption values are evaluated. Concrete mixtures containing different levels of copper tailings were prepared water to cementations materials ratio of 0.55, 0.50 and 0.45. The compressive strength increased as replacement levels increases for 0.55w/c and 0.50w/c from the control mix, but the strength at 0.45w/c decreased marginally from the control mix. The water penetration and initial surface absorption decreased as the replacement of copper tailings increases. It can be concluded that copper tailings as fine aggregates in concrete is technically possible and useful.
Authors and Affiliations
Pankaj Beniwal, Er. Raman Kumar, Er. Mohd. Usman, Sanjay Sangwan
Keywords
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