GCL installation - Photo by NAUE
Photo by NAUE

On March 3, renowned geosynthetic clay liner (GCL) expert Kent von Maubeuge (NAUE) will deliver a live webinar on “GCL Standard Specification GRI-GCL3: Background, Development, Limitations, and Latest Updates.” The time of the presentation is 5:00 pm AEST (Brisbane) / 8:00 am CET (Berlin) / 2:00 am EST (New York).

This free event is organized by the International Geosynthetics Society’s Technical Committee on Barriers (TC-B). Von Maubeuge is a founding member of the TC-B and one of the most well-known GCL practitioners, with a deep background in manufacturing, testing, and field use.



Few materials have seen as many advances as have GCLs. Manufacturing technologies continue to expand, as do the number of manufacturing participants around the world. And, the addition of multi-component GCLs and modified bentonite variations have greatly opened the possibilities for designers and facility owners for choosing GCLs.

In addition to their growth in use, geosynthetic clay liners have also been shown to be quite sustainable as a construction option. By some metrics, a single truckload of GCL rolls provides an equivalent or better performing barrier than 130+ truckloads of compacted clay.

MORE GEO: Online Learning Opportunities in Geosynthetics

With so many options in the barrier market, proper specification is essential with these engineered materials.

The GRI-GCL3 specification  covers the manufacturing quality control (MQC) of geosynthetic clay liners (GCLs), describing types of tests, the test methods, minimum and sometimes maximum values, and the minimum testing frequencies.

The GRI-GCL3 specification from the Geosynthetic Institute (GSI) covers manufacturing quality control, testing methodologies, minimum/maximum values, and testing frequencies.

“The webinar will review the background to the development of this specification, the basis and theory behind each property and value, latest and future updates, and how this specification should be used in design specifications,” writes the IGS Technical Committee on Barriers.

One of the most active contributors to the field, Kent von Maubeuge is a GSI Board Member and chairs ASTM Committee D35 on Geosynthetics Subcommittee D35.04 – Geosynthetic Clay Liners. He has chaired the CEN TC189/WG Geosynthetic Barriers and served as an IGS Council Member from 2012 – 2020. He has been honored with multiple awards, including a 2019 ASTM Award of Merit and 2nd Robert Koerner Distinguished Lecture (delivered 2018).


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