Geosynthetics 2013 was the site for the 25th edition of the Geosynthetic Research Institute (GSI) conference, GRI-25. The theme of the conference was “25-Year Retrospective on the Geosynthetics Industry and Glimpses into the Future.”

Geosynthetics Materials and Properties
Monday, April 1, 2013 (1:30-5:00 p.m.)

Innovation in Polyolefin Resins Used in Geosynthetics Over the Past 25 Years*
Grace Hsuan, Drexel University

Antioxidants for Geosynthetic Resins and Applications
Joseph J. Fay, BASF Corp.

Overview of Geomembrane Manufacturing Methods
Fred Struve, Consultant

Opportunities and Solutions, Developments and Growth of the Geomembrane Industry
Gary Kolbasuk, Raven Industries

Thermal Seaming of Polyethylene Geomembranes
Mark Sieracke, Weaver Boos Consultants Inc. and Ian Peggs, I-CORP Intl.

The Language of an Industry: Geosynthetics Testing and Measurement
Sam Allen, TRI/Environmental Inc.

Background and Development of GRI's Geosynthetics Specifications*
George Koerner/Robert Koerner, Geosynthetic Institute

Geotextile Filters…25+ Years of Research and Experience
Robert D. Holtz, University of Washington and Barry Christopher, Christopher Consultants

A Brief History of Geosynthetic Drainage Media: From Rocks to SIM Tested, Patented, Strand Geometries
Boyd Ramsey, GSE Lining Technology LLC

Engineering Characteristics of Geosynthetic Clay Liners: Questions Asked and Answered Over Time
Dave Daniel, University of Texas – Dallas

Geofoam: History of the Lightweight Contender
Archie Filshill, InterGEO Services

Geosynthetics Systems and Infrastructure
Tuesday, April 2, 2013 (1:30-5:00 p.m.)

A 25-Year Perspective on Waste Containment Liner and Cover System Designs Using Geosynthetics
Rick Thiel, Thiel Engineering

Reinforced Soil Walls and Slopes in Retrospect (i.e., The Good, the Bad and the Ugly)
Barry Christopher, Christopher Consultants; Robert D. Holtz, The University of Washington; Ryan R. Berg, Ryan R. Berg & Assocs., Inc. and Richard P. Stulgis, Geocomp Corporation

Geotextiles in Marine Engineering: Past, Present and Future
Chris Lawson, TenCate Geosynthetics Asia

A Brief History of Heap Leaching
Monte Christie, Geo-Logic Associates and Mark Smith, RRD International Corp.

Geosynthetic Design Methods Used in Roadway Applications*
Robert Koerner Geosynthetic Institute

The Evolution of Geosynthetics in Erosion and Sediment Control
Joel Sprague, TRI/Environmental Inc.

The International Geosynthetics Society (IGS): No Borders for the Good Use of Geosynthetics
Jorge Zornberg, University of Texas- Austin

IFAI Turns 101 with 33 Years of Geosynthetic Representation
Andrew Aho, Geosynthetic Materials Association

1983-2013: 30 Years of the Magazine Formerly Known as GFR
Ron Bygness, Geosynthetics magazine / IFAI

ASTM International Committee D35 on Geosynthetics – A Look Back Over 30 Plus Years
Dave Suits, North American Geosynthetic Society

The Geosynthetic Institute’s Background and History*
Bob Koerner, Geosynthetic Institute

*Paper only due to time constraints.