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Geotechnical Behavior of Recycled Copper Slag-Cement-Treated Singapore Marine Clay

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Abstract

Copper slag is a by-product obtained from production of copper metal. As copper slag contains silica and alumina, it may exhibit pozzolanic property, and hence it may be re-use in ground improvement applications as a partial replacement of cement. Present study evaluates systematically the possible pozzolanic property of copper slag as well as studies the effect of copper slag on engineering properties of cement-treated clay. X-rays diffraction method was employed to assess the possible pozzolanic property of copper slag. Effect of copper slag on engineering properties (i.e. compressive strength and compressibility) of cement-treated clay was studied with samples prepared with constant water content and workability. The test results showed that with sufficient curing time and at constant workability, the compressive strength of cement-treated clay was found to be increased with increasing amount of copper slag at high cement content but the compressive strength remained the same with increasing amount of copper slag at low cement content. Compressibility of cement-treated clay was found to be unchanged with increasing amount of copper slag. It was concluded that copper slag can be used as partial replacement of cement in treating soft marine clay.

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Authors and Affiliations

  1. Bechtel India Pvt Ltd, New Delhi, India

    Sanjay Kumar Bharati

  2. Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore

    Soon Hoe Chew

Authors
  1. Sanjay Kumar Bharati
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  2. Soon Hoe Chew
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Correspondence to Sanjay Kumar Bharati.

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Bharati, S.K., Chew, S.H. Geotechnical Behavior of Recycled Copper Slag-Cement-Treated Singapore Marine Clay. Geotech Geol Eng 34, 835–845 (2016). https://doi.org/10.1007/s10706-016-0008-8

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  • DOI: https://doi.org/10.1007/s10706-016-0008-8

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