Design considerations for GCLs in leach pad liner systems

October 1, 2014  |  Products

By Chris Athanassopoulos and Mark Smith Introduction Traditionally, leach pad lining systems have consisted of a single geomembrane liner placed directly over a prepared subgrade of locally available soil or, occasionally, compacted clay. Heap fills are most commonly constructed by placing a layer o…
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Polymeric marine mattresses

October 1, 2014  |  Case Studies, Features

Case studies highlight marine mattress applications By Jeff Fiske Introduction Marine mattresses are rock-filled containers constructed with advanced UV-stabilized co-polymer geogrid materials. Geogrid panels are laced together to form mattress-shaped baskets that are filled with small stones simila…
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Geosynthetics & wall

October 1, 2014  |  Q&A: GMA Techline

Geomembrane patching? Landfill cooling? Puncture protection? Geomembrane patching? Landfill cooling? Puncture protection? Questions and answers from the GMA Techline Using geosynthetics with existing foundation wall The goal of [our] project is to demolish a commercial building and use one of the ex…
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Puncture protection

October 1, 2014  |  Q&A: GMA Techline

Geomembrane patching? Landfill cooling? Puncture protection? Geomembrane patching? Landfill cooling? Puncture protection? Questions and answers from the GMA Techline Geomembrane puncture protection I am sizing a cushion geotextile that will be protecting a 40-mil LLDPE closure geomembrane against 2i…
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Landfill cooling

October 1, 2014  |  Q&A: GMA Techline

Geomembrane patching? Landfill cooling? Puncture protection? Geomembrane patching? Landfill cooling? Puncture protection? Questions and answers from the GMA Techline Landfill cooling? If the difference in temperature between wet waste and the ambient environment contributes to cooling of leachate, i…
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Fabric-formed shells

October 1, 2014  |  Q&A: GMA Techline

Geomembrane patching? Landfill cooling? Puncture protection? Geomembrane patching? Landfill cooling? Puncture protection? Questions and answers from the GMA Techline Building fabric-formed concrete thin shells Any suggestions on the type of geogrid or geoweb fabric I can use for shaping and reinforc…
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Bentonite compatibility

October 1, 2014  |  Q&A: GMA Techline

Geomembrane patching? Landfill cooling? Puncture protection? Geomembrane patching? Landfill cooling? Puncture protection? Questions and answers from the GMA Techline Bentonite compatibility with propylene glycol Are there any issues regarding bentonite GCL compatibility with propylene glycol? Any in…
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Geotextile filter

October 1, 2014  |  Q&A: GMA Techline

Geomembrane patching? Landfill cooling? Puncture protection? Geomembrane patching? Landfill cooling? Puncture protection? Questions and answers from the GMA Techline Geotextile filter Are there any papers done on the use of a geotextile filter layer below a GCL or CCL? Your assistance in this regard…
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Fusion welds

October 1, 2014  |  Q&A: GMA Techline

Geomembrane patching? Landfill cooling? Puncture protection? Geomembrane patching? Landfill cooling? Puncture protection? Questions and answers from the GMA Techline Double-track fusion welds Can you offer any guidance on the minimum allowable ambient temperature to perform double-track fusion welds…
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Geomembrane patching

October 1, 2014  |  Q&A: GMA Techline

Geomembrane patching? Landfill cooling? Puncture protection? Geomembrane patching? Landfill cooling? Puncture protection? Questions and answers from the GMA Techline Geomembrane patching Would it be acceptable to repair an existing 30-mil HDPE geomembrane liner system with 60-mil HDPE geomembrane pa…
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