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Instrumentation for monitoring field performance of the Cincinnati GCL test plots |
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| Authors: | George R. Koerner John J. Bowderst Heather B. Scranton |
| Affiliation: | a Geosynthetic Research Institute, Drexel University, Drexel, USA b University of Texas at Austin, Austin, TX, USA c Cornforth Consultants, Portland, OR, USA |
| Abstract: | Fourteen full-scale cover systems were constructed at a site in Cincinnati, Ohio, to understand better the strength capability of various GCLs as a component in cover systems. Four different geosynthetic clay liner (GCL) products were installed in full-scale cover systems on two different slopes. The main objective of the project was to monitor the internal shear strength of the GCLs over time. This required in-situ yet economic instrumentation. Instruments were designed, calibrated and installed in the test plots in order to monitor the moisture content of the subsoil and moisture content within the bentonite component of the GCL. In addition, total and differential deformations of the GCLs were monitored. The focus of'this paper is to report the details of instrumenting the GCLs rather than to report on specific GCL performance. |
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