Performance of Geosynthetic Clay Liners Used in Two Landfill Closures in a Coastal Area of Florida / RE. Mackey, JT. Olsta
- Conference Author:
- Advances in Geosynthetic Clay Liner Technology: 2nd Symposium (2nd : 2003 : Denver, Colorado)
- Physical Description:
- 1 online resource (19 pages) : illustrations, figures, tables
- Additional Creators:
- Olsta, JT., Mackey, RE., American Society for Testing and Materials, and ASTM International
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- Landfill caps may present GCLs with one of the most difficult environmental conditions in which to perform. The low confining pressure of the cover soil allows for greater separation of the sodium montmorillonite platelets. The GCL is more susceptible to ion exchange at these low confining pressures. Coastal areas of Florida have a greater potential for the presence of calcium within the sandy soil cover placed over the GCL to function as a drainage layer and protective cover. This combination of low confining pressure and the presence of calcium carbonate may increase the hydraulic conductivity of the GCL over time. This paper will detail an investigation of a 5 year old plus GCL barrier layer within two landfill closures for a coastal Florida county and determine if any changes in properties of the bentonite/GCLs have occurred. The samples were tested for hydraulic conductivity, fluid loss, swell index, and ion content. The samples were also inspected for root penetration. Samples of the soils placed above and below the GCL were also analyzed for ion content and bentonite compatibility.
- Dates of Publication and/or Sequential Designation:
- Volume 2004, Issue 1456 (January 2004)
- Other Subject(s):
- 9780803155008 (e-ISBN)
- Digital File Characteristics:
- text file PDF
- Bibliography Note:
- Includes bibliographical references 8.
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- Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
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- Reproduction Note:
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 2004. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
- Technical Details:
- Mode of access: World Wide Web.
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- ASTM International PDF Purchase price USD25.
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