Laboratory Evaluation of Small Strain Elastic Parameters of Coal Ash from Bender Element Tests
Publication: Geo-Congress 2023
ABSTRACT
Increased industrialization, urbanization, and economic growth of developing countries like India have demanded more energy requirements. Currently, thermal power plants are the dominating power generation sources. Accordingly, coal ash management has become a huge challenge in India and globally. Mass utilization of coal ash is possible in geotechnical applications and hence requires a proper understanding of its elastic parameters such as Young's modulus, shear modulus, and bulk modulus. The present study investigated the effect of sample preparation, initial void ratio, confining pressure, and S and P wave travel time measurement on the elastic parameters of coal ash using bender element tests. Additionally, power models for the maximum shear modulus (Gmax) and maximum Young’s modulus (Emax) were developed, and the fitting constants, A and n, for the relationship were evaluated. These relationships are useful as input parameters in static and seismic analysis of various geotechnical structures constructed with coal ash.
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Geo-Congress 2023
Pages: 494 - 504
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Published online: Mar 23, 2023
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