Investigating the advantage of copper and steel slags as partial replacement material in a sand compaction column in stabilizing the soft clay

ABSTRACT

The current study aims in finding the utilization of Industrial waste such as copper and steel slags as a partial replacement material for sand in Sand Compaction Pile (SCP) in proportions of 5%, 10%, 15%, 20%, 30%, and 40% by weight. From the direct shear tests, it is observed that the angle of internal friction increases from 27.59° to 40.1° and 34.82° for copper and steel slags, respectively. The tests are done by installing the SCP in a soft clay in California Bearing Ratio mould and it is tested under soaked and unsoaked conditions. The optimum percentage found from the study for both the slag material is 30%. Tests were also done by air-curing the composite soil within the mould for 7 days and water-curing the sample under soaked conditions for 4 days for the optimum replacement percentage.

KEYWORDS:

• Clay
• CBR
• sand compaction pile
• copper slag
• steel slag
• bearing capacity influencing factor

Acknowledgement

I would like to acknowledge Dr. Jijo James, Asst. Professor, College of Engineering- Guindy, Chennai for proof reading the manuscript. I would also like to thank Mr.Jegadesan.K for helping in conducting the tests in the laboratory.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The authors thank SSN Trust for funding the project.