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5-Part Series (Part 5): Chemical resistance
October 11th, 2022
Editor’s note: Last November 2021, E Squared Technical Textiles discussed the five geosynthetics performance tests to ensure suitability for your application: Chemical Resistance, UV Resistance, Cold Resistance, Abrasion Resistance, and Flame Retardancy. In this fifth part of a new five-part series, E Squared takes an expanded look at each of these specific tests, this time […]
PVC geomembrane specifications for South American lithium mining
June 1st, 2022
FIGURE 1 A covered pond with a PVC geomembrane (left) that complies with Fabricated Geomembrane Institute (FGI) specifications. A second pond (right) is already filled with lithium brine. Lithium, one of the raw materials in various batteries, is the element powering the technological revolution over the past 30 years that has led to people having […]
Geosynthetics for pipe wrapping
February 1st, 2022
Q: I need impervious geosynthetics for pipe wrapping that will be placed within heavy clay. Do you have any suggestions? A: One wraps nonpolymeric pipes for many reasons. Below are some examples: Insulation (sound and thermal)Corrosion protectionWaterproofingImpact resistance Most wraps are tapes or mastics. Polyvinyl chloride (PVC), butyl rubber and bituminous wraps are common. A […]
New ASTM geosynthetics standard provides specifications for vinyl sheet piling
January 28th, 2022
Polyvinyl chloride (PVC) sheet piling. Photograph courtesy CeTeau B.V. ASTM International’s Committee D35 on Geosynthetics has approved a new standard that will help engineers, designers and specifiers who work with vinyl sheet piling. Applications for such piling include the construction of seawalls, retaining walls and chemical cut-off walls. “The new specification will standardize the materials […]
PVC sheet piling for cutoff and containment barriers
August 1st, 2020
By Brendan Sheppard and Steve Hargrave FIGURE 1 30-foot (9.1-m) long PVC sheet pile installed with a fixed mast pile driver in August 2015 Polyvinyl chloride (PVC) sheet piling (Figure 1) has been used for more than 25 years in bulkheads throughout the United States and beyond as a replacement for steel, concrete and timber […]
Minnesota Pollution Control Agency updates geosynthetic liner guidelines for stormwater management
August 30th, 2018
The Minnesota Pollution Control Agency (Minnesota PCA) revised and released new geosynthetic liner guidelines for stormwater management in August. The guidelines specify where liners are required and where liners are recommended, liner specifications (e.g., HDPE, GCL, PVC), and how to select an appropriate liner. “Liners are designed to limit infiltration of water from a stormwater […]
O-I chooses steel reinforced geosynthetic drainage improvements for a Texas landfill
May 17th, 2018
In December 2017, Owens-Illinois, commonly known as O-I and one of the largest glassmakers in the world, took action to improve the drainage system for their glass container landfill situated near the company’s O-I Waco manufacturing facility in Waco, Texas, Contech Engineered Solutions said in a press release. The consulting engineer worked closely with the […]