An energy dissipation approach to investigate the liquefaction resistance of fine sand reinforced with polyethylene terephthalate fibers
Sustainable Earth and Beyond: Proceedings of EGRWSE 2022
School of Engineering
Ministry of Human Resource Development, Government of India, New Delhi
The emerging sustainability trends in geotechnical engineering have shown the significant utilisation of waste products and recycled material through innovative approaches. Previous research studies have proven the appropriate usage of plastic bottles or polyethylene terephthalate (PET) fibers in mitigating liquefaction and related failures. In the present study, a series of consolidated undrained cyclic triaxial tests were performed on the unreinforced and PET fiber-reinforced fine sand to investigate the liquefaction phenomenon in the fiber-sand mixture. Three different fiber contents of 0.2, 0.4 and 0.6% were considered under loose and medium dense conditions at a confining pressure of 100 kPa. An energy dissipation approach has been considered to understand the failures triggered by liquefaction initiation. The amount of dissipated energy was the highest at the fiber content of 0.6% in loose specimens. With an increase in fiber content, the trends of dissipated energy were not similar under loose and medium-dense states. The outcomes obtained in the present research work will develop an understanding of the energy dissipation approaches in seismic failures and liquefaction mitigation through recycled wastes. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2023.