Abstract
In the process of rapid industrialization, land degradation is being observed in presence of chemical or other alterations in the natural soil. Expansive soil resulting from penetration of liquor in to the ground creating differential heaving stress in the foundation of the structures. Present paper deals a case study of distressed structure founding on the soil which is being contaminated with caustic liquor resulting from the process of manufacturing of Alumina. A reinforced cement tertiary thickener structure of Alumina plant (in India) rests on concentric columns got distress features in the form of upheaval of footings after four year of commissioning. The concrete and soil in the foundation area got contaminated with caustic liquor resulting in to the expansion of materials near to the foundation and creating differential heaving distress in the foundation and columns. This paper also deals the remedial measures and a methodology to make the structure stable and durable.
Highlights
Land degradation in industrial areas is a big problem (Calace et al, 2005) for structures lie on the soil land
Present paper deals a case study of distressed structure founding on the soil which is being contaminated with caustic liquor resulting from the process of manufacturing of Alumina
Present paper deals with a case study of distressed Reinforced Concrete Structure (RCC) founding on the soil contaminated with caustic liquor resulting from the process of manufacturing of Alumina (Hidalco Indusries Limited in India 2017)
Summary
Land degradation in industrial areas is a big problem (Calace et al, 2005) for structures lie on the soil land. Present paper deals with a case study of distressed Reinforced Concrete Structure (RCC) founding on the soil contaminated with caustic liquor resulting from the process of manufacturing of Alumina (Hidalco Indusries Limited in India 2017). A RCC tertiary thickener structure (figure 1) of Alumina plant rests on concentric columns got distress features in the form of upheaval of footings after four year of commissioning.The concrete and soil in the foundation area got contaminated with caustic liquor resulting in to the expansion of materials near to the foundation and creating differential heaving distress in the foundation and columns. Half Cell Potential Test (figure 3) gives the extent of corrosion of the reinforcing steel in the concrete structure. It works on the potentials measures with the help of props at the two location on the surface of the concrete. The average test value of vibration can be compared with
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