Liquefiable soil (LS) is problematic soil because it loses strength under dynamic load. Mine waste is problematic because of difficulty in disposal and utilization. They occupy precious land near mines and tend to contaminate land and groundwater. The present study focuses on the management of these two problematic materials and helps solve the disposal and utilization of these materials. During an earthquake, e.g., Bhuj earthquake in 2001, the majority of structures collapsed due to soil liquefaction. The region along the river valley and earthquake zones 4 and 5 are more susceptible to liquefaction phenomena. In Uttar Pradesh, one of the major deposits of LS is in the Baraich region. Under the current economic development of this region, the center and state governments are spending crores of rupees on the road, water supply, and other schemes. In this study, liquefiable soil was collected from Bahraich, and its engineering behavior was improved by stabilizing it with bauxite mine ore waste (Sagar District Madhya Pradesh). In Bahraich, the water table is very high which reduces the effective stress between soil particles, and due to any minor dynamic pull, soil behaves like a liquid. To characterize the engineering behavior of liquefiable soil, following tests have been conducted; for soil and mining ore waste Particle Size Analysis, Proctor Compaction test, Relative Density test, Direct Shear Test, CBR, and SEM in the lab. The test result shows linear improvement in the engineering behavior of LS when bauxite mine ore waste is added up to 20% and beyond that chances of contamination of soil may increase. So, 20% bauxite mine ore waste was considered as an optimum percentage that can be safely utilized to enhance the engineering behavior of liquefiable soil which then can be used as a sustainable fill material for various earth structures.

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Characterization of Liquefiable Soil Stabilized with Bauxite Mine Ore Waste as a Sustainable Fill Material

  • Mani Mahesh,
  • R. K. Srivastava,
  • Niranjan Kumar,
  • Ankit Gupta

摘要

Liquefiable soil (LS) is problematic soil because it loses strength under dynamic load. Mine waste is problematic because of difficulty in disposal and utilization. They occupy precious land near mines and tend to contaminate land and groundwater. The present study focuses on the management of these two problematic materials and helps solve the disposal and utilization of these materials. During an earthquake, e.g., Bhuj earthquake in 2001, the majority of structures collapsed due to soil liquefaction. The region along the river valley and earthquake zones 4 and 5 are more susceptible to liquefaction phenomena. In Uttar Pradesh, one of the major deposits of LS is in the Baraich region. Under the current economic development of this region, the center and state governments are spending crores of rupees on the road, water supply, and other schemes. In this study, liquefiable soil was collected from Bahraich, and its engineering behavior was improved by stabilizing it with bauxite mine ore waste (Sagar District Madhya Pradesh). In Bahraich, the water table is very high which reduces the effective stress between soil particles, and due to any minor dynamic pull, soil behaves like a liquid. To characterize the engineering behavior of liquefiable soil, following tests have been conducted; for soil and mining ore waste Particle Size Analysis, Proctor Compaction test, Relative Density test, Direct Shear Test, CBR, and SEM in the lab. The test result shows linear improvement in the engineering behavior of LS when bauxite mine ore waste is added up to 20% and beyond that chances of contamination of soil may increase. So, 20% bauxite mine ore waste was considered as an optimum percentage that can be safely utilized to enhance the engineering behavior of liquefiable soil which then can be used as a sustainable fill material for various earth structures.