Evaluation of Liquefaction Potential of Class F Fly Ash and Calibration of Numerical Model

Abstract

Due to the ever-increasing generation of fly ash in a large quantity, its disposal has become a huge problem all over the world. It can be utilized in large geotechnical earthworks without depleting the natural soil. Its use in the seismically active areas requires a profound understanding of its liquefaction behavior and generation of excess pore water pressure. In the present study, the liquefaction behavior of pond ash has been studied from the literature, which utilizes a series of cyclic triaxial tests on different pond ash samples. Results of the cyclic triaxial test available are calibrated using a two-dimensional finite element analysis: Open System for Earthquake Engineering Simulation (OpenSees), and sensitivity analysis of the model parameters has been carried out. From the analysis, it is found that numerical results are in complacence with the experimental results and can be used as a reliable tool for the study of the earthquake-induced phenomenon. � 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.