Alternative stress cracking surfactants identified for HDPE geomembrane testing
Australian geosynthetics testing company ExcelPlas discusses the search for alternative stress cracking surfactants to the pollutant Igepal CO-630.
How to create a natural-looking pond with a geomembrane liner
Constructing water pond with a geomembrane in Sweden. Photograph courtesy of BTL Liners Not all lining material is created equal. Although preshaped rigid liners exist, they are not normally what you would choose for your fish-stocking pond. No matter how small or large the pond you have in mind, your best option today is flexible [...]
Don’t be afraid of making horizontal geomembrane seams on side slopes
FIGURES 1a and 1b Illustration of test setup (a) and photograph of test apparatus (b) for measuring unseamed geomembrane strength in a 90° tensile force configuration Over the years, there have been many discussions raising concerns about having geomembrane field seams located horizontally on side slopes. By not allowing such seams, it usually [...]
The GMA Techline answers all
UV Weathering of Geotextiles Q: My firm is providing construction quality assurance services for a landfill cell expansion. We are having an issue with our contractor and are going to be in a position of having 8 ounces/square yard (271 g/m2) of nonwoven geotextile exposed for a period of time, which exceeds the seven-day limit [...]
AGRU America to extrude world’s largest HDPE pipe
The facility’s location on the shore provides excellent conditions for the production, storage and towing of XXL pipe strings. Photograph courtesy of AGRU America In a press release dated Dec. 6, 2017, AGRU America said that half a century of experience in plastics processing and a $40 million investment is what it takes [...]
