Lakkimsetti, B and Latha, GM (2025) Improved Liquefaction Resilience of Transportation Infrastructure with Geofoam Buffers. In: 5th International Conference on Transportation Geotechnics, ICTG 2024, 20 November 2024through 22 November 2024, Sydney, pp. 19-26.
Full text not available from this repository. (Request a copy)Abstract
The efficacy of geofoam buffers in enhancing the seismic performance and dynamic load response of retaining walls and road embankments is well-established. However, limited research has been conducted to comprehend their role in mitigating soil liquefaction. This study investigates the shearing behavior of sands with Expanded Polystyrene (EPS) geofoam buffers, both before and after liquefaction, through a set of monotonic and cyclic simple shear tests. The investigation considers variations in layer thickness and geofoam density, employing two different thicknesses and three different densities in the tests. The results indicate that geofoam buffers reduce both pre-liquefaction and post-liquefaction shear strength of sand. However, they demonstrate a significant improvement in liquefaction resistance, with better outcomes observed at increased layer thickness and lower geofoam density. This enhancement is attributed to the exceptional energy absorption quality and compressibility of geofoam buffers. Nonetheless, this has a converse impact on the shear strength of sand. Consequently, it is imperative to carefully select the appropriate density and thickness of the geofoam layer to strike a balance between shear strength and liquefaction resistance. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.
| Item Type: | Conference Paper |
|---|---|
| Publication: | Lecture Notes in Civil Engineering |
| Publisher: | Springer Science and Business Media Deutschland GmbH |
| Additional Information: | The copyright for this article belongs to publisher. |
| Keywords: | Seismic response; Shear flow; Shearing; Soil testing, Expanded polystyrene; Expanded polystyrene geofoam; Geofoams; Layer thickness; Liquefaction resistance; Seismic dynamics; Seismic Performance; Shears strength; Simple shear test; Transportation infrastructures, Shear strength |
| Department/Centre: | Division of Mechanical Sciences > Civil Engineering |
| Date Deposited: | 06 Dec 2024 17:53 |
| Last Modified: | 06 Dec 2024 17:53 |
| URI: | http://eprints.iisc.ac.in/id/eprint/86878 |
Actions (login required)
 |
View Item |
