Geotextile grab test methods

June 1, 2022  |  Q&A: GMA Techline

Q: I know the American Society for Testing and Materials (ASTM) approves several grips (the requirement is they be “flat”) to perform ASTM D4632 and ASTM D5034. We use a hard, smooth rubber surface for the woven geotextile and a slightly serrated surface for the nonwoven geotextile. One of our c…
Read More
Pipe penetrations through geomembranes

June 1, 2022  |  Q&A: GMA Techline

Q: Is there a recommended detail that you can provide or point me toward for pipe penetrations through geomembrane single and double liners?
Read More
Geotextile impact testing

June 1, 2022  |  Q&A: GMA Techline

Q: We would like to carry out an impact test on geotextiles as described in Koerner (2012), Chapter 2.3.3 Mechanical Properties-Impact Test and Chapter 2.5.5 Impact (Tear) Resistance. I came across the Geosynthetic Research Institute (GRI) GS2 Test Method for Rupture Strength of Geosynthetics by Pen…
Read More
Members Only  
Multi-linear drainage geocomposites for railways

June 1, 2022  |  Features

In civil engineering, drainage systems are traditionally made with granular material layers and perforated collector pipes. The use of drainage geocomposites became more common 30 years ago with the development of products that met the specific requirements of each application. Moreover, the geocomp…
Read More
Members Only  
Aboveground storage tank liners for energy applications

June 1, 2022  |  Features

Over the past 20 years, hydraulic fracking rules and regulations have become increasingly stringent, and oil and gas (O&G) producers have become progressively more concerned with environmental stewardship. Quality, factory-fabricated geomembrane liners for the aboveground storage tank (AST) mark…
Read More
Geosynthetics Conference 2023 workshop lineup announced

June 1, 2022  |  Events, IFAI Events

The Geosynthetics Conference 2023 Organizing Committee is pleased to announce the workshop and panel discussion program for the conference, Feb. 5–8, 2023, in Kansas City, Mo. Workshops are two hours long and feature in-depth instruction without a full-day commitment. Panel discussions are 90 minu…
Read More
GMA is busy this spring and summer

June 1, 2022  |  GMA News

Government affairs, infrastructure spending and planning have been the watchwords for the Geosynthetic Materials Association (GMA) this spring. In April GMA hosted three morning geosynthetics sessions as part of the annual Industrial Fabrics Association International (IFAI) Outlook Conference, the p…
Read More
New GSI test method for resistance of conductive geosynthetics

June 1, 2022  |  GSI News

The Geosynthetic Institute (GSI) has a new test method for resistance measured across positions on conductive geosynthetics. Conductive geosynthetics contain an electrically charged backing (usually a thin layer of polyolefin with letdowns containing 20%–30% carbon black) that allows leaks to be d…
Read More
‘Living breakwaters’ protect Staten Island’s shoreline

June 1, 2022  |  Case Studies

Read More
My journey along the ‘Geosynthetics Superhighway’

June 1, 2022  |  Editorial

I've been on a fascinating ride over the last five years during which I have edited and written for Geosynthetics magazine. I began work as the editor of the magazine on March 1, 2017, and less than two weeks later, I traveled to my first geosynthetics-related conference, Geotechnical Frontiers 2017…
Read More