Installation and monitoring of a geosynthetic clay liner as a canal liner in a major waterway
| Autor: | Kent P. von Maubeuge, Juergen Witte, Michael Heibaum |
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| Rok vydání: | 2000 |
| Předmět: |
Ballast
Engineering business.industry Hydraulic engineering Geotechnical Engineering and Engineering Geology Hydraulic structure Closure (computer programming) Geosynthetic clay liner Asphalt Bentonite General Materials Science Geotechnical engineering Geosynthetics business Civil and Structural Engineering |
| Zdroj: | Geotextiles and Geomembranes. 18:263-271 |
| ISSN: | 0266-1144 |
| DOI: | 10.1016/s0266-1144(99)00031-x |
| Popis: | Sealing materials are of major importance in hydraulic engineering applications. They ensure the stability of hydraulic structures and prevent or reduce seepage losses out of the waterway. In waterways, mainly natural clay liners and in some cases also asphalt and concrete liners have been used. In the new turnout Eberswalde, Germany, a needlepunched geosynthetic clay liner (GCL) was installed in a navigated waterway as a canal liner by order of the Federal Water and Shipping Administration (Fleischer and Schreier, 1998). GCLs are thin composite materials combining bentonite clay (usually natural sodium bentonite) and geosynthetics (usually geotextiles) and are generally used to replace or augment compacted liners. To avoid the closure of the waterway for ship traffic, an installation method was chosen which allowed continuous ship traffic. The GCLs were installed in two segments, both halfway under water, and a sand ballast mat provided the necessary confining stress prior to the rock ballast covering, and acted mainly as a protection layer for installation stress due to the placement of the rock rip rap. Continuous monitoring was carried out to prove the efficiency of the sealing system. |
| Databáze: | OpenAIRE |
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