| Issue |
E3S Web Conf.
Volume 662, 2025
IGS - 4th Technical Workshop on Soil Reinforcement (TCR): Reinforcement and Drainage in Soil Structures 2024
|
|
|---|---|---|
| Article Number | 01005 | |
| Number of page(s) | 5 | |
| Section | Geosynthetic Materials and Soil Interaction | |
| DOI | https://doi.org/10.1051/e3sconf/202566201005 | |
| Published online | 14 November 2025 | |
Long-term performance of pet geogrids with LLDPE coating in alkaline conditions: Exhumation findings post lime and cement stabilization
1 Officine Maccaferri S.p.a, Bologna, Italy E-mail: g.lugli@maccaferri.com , web page: www.maccaferri.com
2 Officine Maccaferri S.p.a, Bologna, Italy E-mail: m.scotto@maccaferri.com , web page: www.maccaferri.com
The increasing demand for sustainable construction practices and cost minimization has spurred interest in using locally available soil for reinforced fill structures. However, cohesive soils on-site often require stabilization treatments to enhance volume stability, strength, compressibility, permeability, and durability. These treatments can induce chemical reactions that dry the soil and alter the clay's surface mineralogy, impacting the pH level. Soils with a pH consistently above 9 is deemed not suitable for conventional PET geogrids due to hydrolysis susceptibility. This research examines the performance of PET geogrids with polyethylene-sheathed tendons in alkaline environments. Through experimental laboratory analyses and exhumation campaigns to assess the real-world conditions and prolonged exposure effects on these geogrids and geostrips, the study presents some considerations on the effects of a specific geogrid structure and coating.
© The Authors, published by EDP Sciences, 2025
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