December 21, 2021

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Girish Kumar Coauthored a Paper on Temperature Effects on Stability and Integrity of Geomembrane–Geotextile Interface in the International Journal of Geosynthetics and Ground Engineering

Girish Kumar, Ph.D. (California) coauthored a paper entitled "Temperature effects on stability and integrity of geomembrane–geotextile interface in municipal solid waste landfill" that was published in the International Journal of Geosynthetics and Ground Engineering in Volume 7, Issue 2 in March 2021.

Girish was the lead author, and his coauthor was Krishna R. Reddy.

Girish Kumar is a Senior Staff Professional based in California with a focus on site assessment and remediation consulting. He has academic and research experience in geotechnical and geoenvironmental engineering, including landfill design and analysis, environmental remediation, numerical modeling and analysis of geosystems, and life cycle assessment and sustainability quantification. Girish has published more than 40 research articles, and his work has been recognized by several professional organizations including the American Society of Civil Engineers (ASCE), Environmental Research and Education Foundation (EREF), Solid Waste Association of North America (SWANA), and Air & Waste Management Association (A&WMA).

The International Journal of Geosynthetics and Ground Engineering presents fundamental and applied research on all aspects of geosynthetics and their applications as well as a variety of ground improvement techniques to reinforce and densify grounds, soils, and rocks. The ground engineering aspects that involve scientific principles of geophysics, geochemistry, and geomechanics for providing new solutions to practical problems are also considered. The aim is to provide access to rigorously refereed, original, and innovative papers across the journal subject fields applied to core civil engineering areas, including geotechnical, geoenvironmental, environmental, transportation, and hydraulic engineering; and other ground-related areas, such as mining engineering, agriculture, aquaculture, and waste management. The journal focuses on the needs of developing economies especially with regard to the environmental sustainability aspects of ground engineering.

Abstract

Review of the limited experimental studies available in the published literature that investigate the effects of temperature on the shear strength of typical geomembrane (GM) and geotextile (GTX) interface is performed. These studies suggest that the shear strength of GM–GTX interfaces generally increase with an increase in temperature. However, there is no study that examined the combined effect of the temperatures along the bottom liner and the large displacement induced by the waste settlement on the short-term and long-term stability and integrity of the GM–GTX interface in a composite bottom liner system in municipal solid waste (MSW) landfills. This paper presents the application of a thermal model to predict the evolution and distribution of temperatures within the waste and along the bottom liner system of a typical landfill cell model, while simultaneously evaluating the influence of the predicted temperatures on the shear response of GM–GTX interfaces in the composite bottom liner system. The predicted temperatures along the liner interface of the simulated landfill cell varied between 4 and 32°C, which are well within the reported temperatures in and around the bottom liners in MSW landfills. The results also suggest that beginning the placement of waste in summer is favorable than in winter, since the high temperatures at the GM–GTX during summer mobilize higher shear strengths resulting in lower shear displacements. Further, if stability analysis using limit equilibrium method is performed, then the shear strength of GM–GTX interface corresponding to the low temperature ranges expected at the site should be used for conservative and reliable estimates of the stability of the bottom liner system.

More Information

Learn more about the article: Temperature Effects on Stability and Integrity of Geomembrane–Geotextile Interface in Municipal Solid Waste Landfill | SpringerLink
Learn more about the International Journal of Geosynthetics and Ground Engineering: International Journal of Geosynthetics and Ground Engineering | springer.com
For consultation regarding the geotechnical and geoenvironmental practice, contact Girish Kumar at This email address is being protected from spambots. You need JavaScript enabled to view it.
Learn more about Girish: Girish Kumar | LinkedIn