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Mechanical performance and stability analysis of moorum embankment partially replaced with fly ash

Mechanical performance and stability analysis of moorum embankment partially replaced with fly ash This paper presents the application of fly ash in moorum embankment (soft aggregate, a form of laterite after decomposition) by partial replacement of moorum with fly ash, and its stability analysis has been carried out. An experimental investigation (index properties and strength properties) was performed on moorum mixed with fly ash at different proportions of fly ash. The material characterization was studied through Atterberg's limit, specific gravity, grain size distribution, compaction characteristics, direct shear test (DST), and California bearing ratio (CBR) test. Further, the stability analysis of the moorum embankment was performed using FLAC/SLOPE (Fast Lagrangian Analysis of Continua) version 8.10 software at various slope angles of 20°, 30°, and 40° and different heights of the embankment of 3 m, 6 m, and 9 m to calculate the factor of safety (FoS). The results show that FoS increases with an increase in the fly ash content, the height of the embankment, and the slope angle, respectively. The multiple linear regression analysis was performed through the response surface methodology (RSM) to predict FoS. The mathematical equation illustrates that the model was statistically significant and that results give a reliable prediction of FoS. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Building Pathology and Rehabilitation Springer Journals

Mechanical performance and stability analysis of moorum embankment partially replaced with fly ash

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References (41)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
2365-3159
eISSN
2365-3167
DOI
10.1007/s41024-022-00240-8
Publisher site
See Article on Publisher Site

Abstract

This paper presents the application of fly ash in moorum embankment (soft aggregate, a form of laterite after decomposition) by partial replacement of moorum with fly ash, and its stability analysis has been carried out. An experimental investigation (index properties and strength properties) was performed on moorum mixed with fly ash at different proportions of fly ash. The material characterization was studied through Atterberg's limit, specific gravity, grain size distribution, compaction characteristics, direct shear test (DST), and California bearing ratio (CBR) test. Further, the stability analysis of the moorum embankment was performed using FLAC/SLOPE (Fast Lagrangian Analysis of Continua) version 8.10 software at various slope angles of 20°, 30°, and 40° and different heights of the embankment of 3 m, 6 m, and 9 m to calculate the factor of safety (FoS). The results show that FoS increases with an increase in the fly ash content, the height of the embankment, and the slope angle, respectively. The multiple linear regression analysis was performed through the response surface methodology (RSM) to predict FoS. The mathematical equation illustrates that the model was statistically significant and that results give a reliable prediction of FoS.

Journal

Journal of Building Pathology and RehabilitationSpringer Journals

Published: Dec 1, 2022

Keywords: Moorum; Fly ash; Slope stability; FLAC/slope; Regression; RSM; FoS

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