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…
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…
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…
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…
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…
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…
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…
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…
Use of geogrids in piggyback landfills

June 1, 2014  |  Q&A: GMA Techline

From the GMA Techline Do you have any specific project information on the use of geogrids in constructing piggyback landfills, especially in cold climates? I am interested in examples of the use and evaluation of geogrids when building landfills over closed landfills. Any information you can provide…
Seepage through geosynthetic-tube dam

June 1, 2014  |  Q&A: GMA Techline

From the GMA Techline I am trying to determine the steady-state seepage through a stack of sand-filled geosynthetic tubes with a triangular cross section (4-3-2-1 tubes). The permeabilities of the sand and the tube material are known. Can you suggest places I should look to get information on how to…