Mitigation of post-liquefaction-induced failures using polyethylene terephthalate fibres: A study based on cyclic triaxial testing
Author Identifier (ORCID)
Sanjay Kumar Shukla: https://orcid.org/0000-0002-4685-5560
Abstract
The post-seismic failures can cause serious damages to many geotechnical vulnerable sites within a considerable short duration. Most of these failures occur even after the ceasing of driving forces but can lead to a significant loss of life and property. Plastic waste is a non-degradable waste and its utilisation in any mitigation project will lead to a successful approach towards sustainability. Therefore, this study facilitates the sustainable utilisation of polyethylene terephthalate (PET) fibres in mitigating the post-liquefaction of fine sand. Several cyclic triaxial tests were performed on both the reinforced and unreinforced specimens of fine sand. A total of three different fibre contents (0.2%, 0.4% and 0.6%) were used in the study for reinforcement purposes. Two different relative densities of 30% and 50% were considered for a better observation of the density effect. The presence of fibre was found to be more effective in the medium-dense specimens due to a better fibre-sand interlocking. The post-liquefaction state of the soil specimen has been simulated using static loading after the dissipation of excess pore water pressure. It has been found that there was a sharp increase in the elastic modulus of reinforced specimens than the unreinforced specimens under a post-liquefied state. The presence of fibres facilitated an additional tensile strength to the fine sand specimen. Also, the specimen was found to be most stable at a fibre content of 0.6%. The analysis has been made after comparing the stress-paths of the specimens.
Document Type
Conference Proceeding
Date of Publication
1-1-2025
Volume
706 LNCE
Publication Title
Lecture Notes in Civil Engineering
Publisher
Springer
School
School of Engineering
Funders
Ministry of Human Resource Development, Government of India, New Delhi (MHR 002)
Copyright
subscription content
First Page
63
Last Page
72
Comments
Jain, A., Mittal, S., & Shukla, S. K. (2024). Mitigation of post-liquefaction-induced failures using polyethylene terephthalate fibres: A study based on cyclic triaxial testing. In Indian Geotechnical Conference (pp. 63-72). Singapore: Springer Nature Singapore. https://doi.org/10.1007/978-981-96-7791-7_5