| Issue |
E3S Web Conf.
Volume 662, 2025
IGS - 4th Technical Workshop on Soil Reinforcement (TCR): Reinforcement and Drainage in Soil Structures 2024
|
|
|---|---|---|
| Article Number | 01007 | |
| Number of page(s) | 4 | |
| Section | Geosynthetic Materials and Soil Interaction | |
| DOI | https://doi.org/10.1051/e3sconf/202566201007 | |
| Published online | 14 November 2025 | |
A new look at the use of coated pet geogrid reinforcement in highly alkaline environments
TRI Environmental Group, Headquarters: 9225 Bee Caves Rd., Austin, TX 78733, USA E-mail: sallen@tri-env.com, web page: https://www.tri-env.com
It has historically been assumed that coated polyester geogrids are not suitable for applications where the pH of the soil around the geosynthetic is greater than 9. These applications primarily include cohesive soils treated with lime, or ground hardened concrete or cement mixtures. The pH of these admixtures is often suggested to be in the range of 11-12 but actual field data are difficult to locate. However, it is known that a target pH of greater than 12.4 is used when clayey soils are stabilized with hydrated lime. Another environment of high pH is freshly cured concrete, which is reported to have a pH of greater than 12. There is a new interest in looking at the hydrolysis behavior of coated PET geogrids at pH levels greater than 9. This effort is buoyed by some of the limitations of the work previously done on this topic.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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