2021 Proceedings Video Archive

The move to virtual for the Geosynthetics 2021 allowed for all technical sessions held during 2021 Virtual Geosynthetics Conference to be recorded and archived. These videos have been added to the proceedings archive in an effort to further expand the educational offerings in the archive.

Koerner Award Lecture
Geosynthetic-reinforced column-supported embankments: Bridging theory and practice

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Koerner Award Lecture: Geosynthetic-reinforced column-supported embankments: Bridging theory and practice
Jie Han, PhD, The University of Kansas
Geosynthetics have been successfully used to improve the performance of column-supported embankments over soft soils. Geosynthetic-reinforced column-supported embankments involve complex load transfer mechanisms, including soil arching, tensioned membrane, stress concentration, lateral restraint, and anchorage. Different theoretical models are available to describe soil arching but often result in different predicted stresses. Due to three-dimensional layout of columns, tension distribution in geosynthetic reinforcement is spatial. Column-soil stiffness difference induces soil arching and contributes to stress concentration and down-drag forces on columns. Side slopes of embankments promote lateral spreading and global instability that can be stabilized by lateral restraint and anchorage of geosynthetics. Localized surface loading further affects load transfer among soils, columns, and geosynthetics. This lecture will illustrate how theoretical solutions can be used to explain existing phenomena and solve practical problems in geosynthetic-reinforced column-supported embankments including required tensile strength of geosynthetic reinforcement, settlement, and global stability.


Panel Discussions

At What Frequency Should We Take Seam Destructive Samples?

At What Frequency Should We Take Seam Destructive Samples?
(Sponsored by Titan Environmental)
Moderator: Joanna Toepfer, CQA Solutions, LTD
Installer: Todd Harman, Hallaton
Welding equipment manufacturer: Eddie Weiser, Leister Technologies
Engineering and academia: J.P. Giroud ECP, Ph.D. 
Construction quality assurance: Glen W. Toepfer, CQA Solutions
Geosynthetic testing laboratories: Gary Torosian, Geocomp

Over the past decade, the debate about destructive testing frequencies has heated up as the standard frequency of 1 sample per 500 lineal feet of welding has been criticized and challenged.  There have been numerous alternatives suggested, yet the most common specification found on containment projects remains the 1/500.

What factors should be considered in determining the appropriate sampling frequency?  Materials?  Weld type?  Experience?  Use of smart technology welding equipment?  Non-destructive seam testing failures?  Is peel and peel and shear testing enough?  Should the frequency be changed?  Should the change be universal for the industry or determined on a project-by-project basis?

A panel composed of key members representing a cross-section of the containment system industry will try to answer these questions and more in what is sure to be a lively discussion!  


Filtration and Drainage Performance of Geosynthetics in Changing Climate Conditions

Filtration and Drainage Performance of Geosynthetics in Changing Climate Conditions
Moderators: Eric Blond, Eric Blond Consultant and Pietro Rimoldi, Consultant, on behalf of the Technical Committee on Hydraulics of the IGS

Panel Members: 

  • Eric Blond, Consultant, Canada (Moderator)
  • Pietro Rimoldi, Consultant, Italy (Moderator)
  • Michael Heibaum, retired, formerly Federal Waterways Engineering and Research Institute (BAW), Germany
  • Kelvin Legge (assisted by Karl Bester), Department of Water and Sanitation, South-Africa
  • Sam Allen, TRI Environmental, USA
  • Markus Wilke, Huesker, Germany

The world seems to experience more extreme weather events than what used to be considered in the past. Conditions of rainfall and drought, higher and lower temperatures, rainfall intensities are affecting the quantity of water that must be managed on any project. How will this affect the required performance of geosynthetics for filtration, drainage and erosion control?

On the other hand, the properties of geosynthetics may be subject to important variations with temperature. Should material requirements be the same in cold and hot climates? How can this be addressed at the design stage?

The panel will discuss how the design of geosynthetics may be influenced by changing weather conditions, as well as how filtration and drainage properties can change in extreme cold and hot climates.


Geosynthetic Specifications: The Pros and Cons of Existing Geosynthetic Specifications

Geosynthetic Specifications: The Pros and Cons of Existing Geosynthetic Specifications
Panel Members and roles:
Landfill Systems: Robert Mackey, S2Li
Erosion Control Systems: Joel Sprague, TRI Environmental
Pavement Systems: David Suits, LDS Geosynthetics Consulting Services
Earth Structure Systems: George Koerner, GSI 
Drainage Systems: John Lostumbo, TenCate
Panel members will review critical geosynthetics specifications in the areas of landfill systems, erosion control systems, pavement systems, earth structure systems, and drainage systems, focusing on the current pros and cons of each as well as potential future developments. Audience participation is strongly encouraged as potential improvements to the specifications are explored.


Measuring the Performance of Geosynthetic Roads

Measuring the Performance of Geosynthetic Roads – Bench Top to Full-Scale Testing and Monitoring Method
Panel Members:
Eli Cuelho, TRI Environmental
Jeb Tingle, USACE
Jay Kwon – Kennesaw State University
Amir Shahkolahi – Global Synthetics
There are several test methods and equipment styles currently used to measure the large-scale or full-scale performance of roadways that utilize geosynthetics as reinforcement and/or stabilization.  Designers ultimately desire to have performance data that are accurate and reflect the true benefit of using geosynthetics in roads so they can confidently use this information in design; however, many research projects often present confounding results or are inconclusive due to the lack of standardization.  Test methods are currently being developed that would benefit from the input of a broader audience to improve the likelihood of successful adoption and implementation.

Sponsored by:  


The Permanent Road Foundation Experience

The Permanent Road Foundation Experience

Moderator: Mark Marienfeld, TreadMark
Panel Members and roles:
DOT user of separation/stabilization geotextiles: Amanda Warren PE, Oklahoma DOT
FHWA with a National perspective: Mike Adams PE, Turner Fairbanks
Aggregate Industry: Kevin Vaughan PE, Vulcan Materials
Academia and Research: Erol Tutumluer PE, Illinois Center for Transportation Research and TRB Chair
Geosynthetics Industry: Drew Loizeaux, Propex Geosynthetics

Arguably the largest asset of most transportation agencies is the unbound aggregate used as road support.  This huge asset does not receive the attention it deserves and is largely placed and forgotten.  Inadequate forensic research is conducted to prove to agencies that the degradation of aggregate layers is the root cause for most premature road failures, and unnecessary maintenance and repair.  Members of this panel will; explain the problem of base aggregate contamination, propose a simple geosynthetic solution, explain a Permanent Road Foundation, discuss stone requirements, verify DOT successes, explain FHWA oversight responsibility, explain the lack of transportation asset management attention, and identify research needs.  Interaction with the audience will be encouraged.  Goal is to bring more attention to the unnecessary loss of aggregate while verifying that a Permanent Road Foundation; reduces construction and maintenance cost, reduces road downtime and traffic congestion with the associated poor traffic safety statistics, and conserves resources and lowers our carbon footprint.


Product Showcases

AGRU Closure Solutions

AGRU Closure Solutions
Bill Urchik, Agru America
AGRU offers a portfolio of closure solution options which are tailored to meet specific project site conditions to offer optimal performance while keeping cost to a minimum. Technical aspects of Closureturf® and AGRU Integrated Drainage System (IDS) will be highlighted along with a review of project case histories utilizing these closure solutions.


Resurfacing I-65 with a Sustainable Geosynthetic Interlayer

Resurfacing I-65 with a Sustainable Geosynthetic Interlayer
Todd Julian, Propex
A section of Interstate 65 near Indianapolis, IN required resurfacing due to cracking from heavy traffic loading. The roadway included asphalt concrete layers over an underlying jointed concrete pavement. The project engineers originally considered a mill and fill operation to replace the deteriorated pavement with the same five inches of new asphalt concrete. Recognizing that using traditional replacement methods would yield short-term results, Indiana DOT (INDOT) looked for an option that would extend the lifetime performance of the road. INDOT selected PETROMAT® Enviro™, a fully millable and recyclable AASHTO M288 Type II paving fabric interlayer containing no fiberglass.


LiteEarth™ – Erosion and Maintenance Free Capping

LiteEarth™ – Erosion and Maintenance Free Capping
Adam Maskal, Solmax
Solmax’s fully anchored LiteEarth™ capping system enables you to cap environmentally sensitive basins where erosion and soil instability make it difficult to install and operate traditional capping systems. Where traditional systems require significant design considerations and maintenance to avoid erosion of the cover, our LiteEarth™ system shines. The LiteEarth™ capping system is the only monolithic geosynthetic system, which means that there is no granular ballast to maintain. LiteEarth™ is made of a 40-mil LLDPE Series geomembrane laminated to synthetic grass and is installed using permanent engineered earth anchors.


Mirafi® H2Ri

Mirafi® H2Ri – Providing Separation, Filtration, Confinement, Reinforcement and Enhanced Lateral Drainage to Your Roadways
René Laprade, P. E., TenCate
Join us as we discuss the number one cause of damage to roadways and how to mitigate these issues while increasing performance longevity with Mirafi® H2Ri. We will show you the features of this unique moisture management system and demonstrate how to quantify the benefits in roadway designs. Also, we will review Case Studies from various DOT projects where significant financial cost savings and improved performance were proven by incorporating Mirafi® H2Ri.


HUESKER 30 Years of Ideas. Engineers. Innovations.

HUESKER 30 Years of Ideas. Engineers. Innovations.
Trevor Walker, HUESKER
HUESKER established its North American Headquarters in 1991.  2021 marks its 30th anniversary of providing technical textiles into the market.  HUESKER welcomes you to join them as we take a step back and look at 30 years of Ideas, Engineers and Innovations.  Learn about HUESKER’s key project case histories and innovative products developed over the last 30 years.  We look forward to celebrating with all of you.


In-house production of Geomembranes

In-house production of Geomembranes
Jeff Sponseller, Miller Weldmaster
A discussion about the numerous advantages of bringing your geomembrane production in-house, hosted by industry veteran Jeff Sponseller.


Determining Geosynthetic Value Using TensarApp

Determining Geosynthetic Value Using TensarApp 
The award-winning TensarApp provides an enhanced experience to engineers, contractors and owners in determining the value of using geosynthetics on their projects. The recently launched, web-based platform will be demonstrated, including popular new features requested by customers.


Fence Foundation Consideration for SRW

Fence Foundation Consideration for SRW
Craig Bell, Strata Systems
Designing fences on top of segmental retaining walls can be difficult, especially since there are multiple parties involved. Who is responsible? How do you interpret the code? This presentation will explain code compliance for fences on top of segmental retaining walls, explore design options, and highlight the patented pre-engineered fence anchoring solution, Sleeve-It®.



Round Tables

Custom Designed Geomembranes for Site Specific Conditions

Custom Designed Geomembranes for Site Specific Conditions
Luis Burgos,Atarfil
Every project encounters dissimilar site conditions that affect geomembrane performance differently. Whether it\s high levels of VOC\s, advanced UV exposure, inclement weather or complex installation details, Atarfil recognizes that standard products don\t always address the complexities of your project. There is a need for higher standards and products within the industry for safe containment applications custom design a geomembrane solution for your project and give you the confidence to know that the operational life or your liner will not be compromised, saving time and money.


Embankments with Basal Reinforcement: Research, Design and Construction

Embankments with Basal Reinforcement: Research, Design and Construction
Lilma Schimmel, HUESKER
An open discussion among experts on the subject, focusing on the required reinforcement parameters for achieving the desired performance.


Special Sessions

Constructing with Factory Fabricated Geosynthetics Part 1

Constructing with Factory Fabricated Geosynthetics Part 1
(Organized by FGI)
Technical Paper Presentations:
70 Ranch Case Study: Interpreting the Data
Matthew Kemnitz, Leak Location Services, Inc.
70 Ranch Raw Water Reservoir – A Geosynthetic Lining System Solution for a Difficult Site
Ronald Frobel, R.K. Frobel & Associates Consulting Engineers; Ray Peebles, Cooley Group
Geomembrane Installation and Testing Cost Estimator
Timothy Stark, Ph.D., P.E., University of Illinois at Urbana-Champaign
Advantages of using International Specs in PVC Geomembranes for Mining
Myriam Acevedo and Juan Cortes, Filmtex S.A.S
Sponsored by: 


Constructing with Factory Fabricated Geosynthetics Part 2

Constructing with Factory Fabricated Geosynthetics Part 2
(Organized by FGI)
Technical Paper Presentations:
Renewing the Maerkle Reservoir for the City of Carlsbad with Advanced Floating Cover Technology
Pat Elliott, Raven Engineered Films; Douglas Hilts, Hilts Consulting Group, Inc.
Creating Operational Flexibility with limited Storage Options
Alex Gersch, Layfield Australia
Above Ground Storage: Bucket versus Flat Liners
Ron MacKenzie, Inland Tarp & Liner, LLC
Geomembrane Defect and Wrinkle Leakage Calculator
Timothy Stark, Ph.D., P.E., the University of Illinois at Urbana-Champaign
Sponsored by: 


Constructing with Factory Fabricated Geosynthetics Part 3

Constructing with Factory Fabricated Geosynthetics Part 3
(Organized by FGI)
Selecting and Specifying the Appropriate Geomembrane
Moderator: Timothy D. Stark, Ph.D., P.E., University of Illinois at Urbana-Champaign

This Panel Discussion will assemble five (5) industry leaders (3 engineers, 1 geomembrane fabricator, and 1 geosynthetics installer) to discuss the factors that should be considered in selecting and then specifying a geomembrane for a particular application. The moderator, Timothy D. Stark, will present photographs of different applications, e.g., potable water, mining, waste or liquid containment, etc., and ask the panelists to discuss some of the factors that should be considered in the design and specification of the geosynthetics for that application. The audience will be encouraged to submit questions on each application/photograph. The factors that could be considered for each application include: chemical resistance, exposed v. unexposed application, intimate contact, differential settlement, site location, e.g., remote v. accessible, weather, e.g., UV exposure, wind, and temperature, physical properties, e.g., puncture resistance and elongation, static and seismic slope stability, geosynthetic interface shear strengths, construction logistics, e.g., timeframe, vehicle access, and deployment ease, warranty, repairability, and desired color. This should result in a lively debate about designing, selecting, specifying, testing, and installing geomembranes and geosynthetics for a range of applications.  

Fabricator: Brian Fraser, Layfield Group, Inc., Edmonton, Alberta
Installer:   Patrick Elliott, Raven/CLIConstruction, Inc., Denver, Colorado
Engineer:   Douglas Hilts, Hilts Consulting Group, Inc., Los Angeles, CA
Engineer: Joseph Troxell, TetraTech, Columbus, Ohio
Engineer: Jonathan Shamrock, Tonkin + Taylor, Aukland, New Zealand

Sponsored by: 



Current Hot Topics in ASTM International Committee D35 on Geosynthetics

Current Hot Topics in ASTM International Committee D35 on Geosynthetics (Organized by ASTM)
Subcommittee Chairs for ASTM International’s Committee D35 on Geosynthetics will share current, relevant hot topics being worked on in their groups. Subcommittees include Mechanical Properties, Endurance Properties, Permeability and Filtration, Geosynthetic Clay Liners, Erosion Control, Specifications, Geomembranes and Terminology.

Intro:  Gary Torosian, Geocomp
D35.01 – Mechanical Properties: Sam Allen, TRI Environmental
D35.02 – Endurance: Eric Blond, Eric Blond Consultant
D35.03 – Permeability and Filtration: Melissa Medlin, TenCate Geosynthetics
D35.04 – Geosynthetic Clay Liners: Kent von Maubeuge, NAUE
D35.05 – Erosion Control: Rebecca Kurek, Lumite Inc.
D35.06 – Specifications: David Suits, LDS Geosynthetics Consulting Services 
D35.10 – Geomembranes: Zahirul Islam, Civil & Environmental Consultants, Inc.      
D35.93 – Terminology: Robert Lozano, The Reinforced Earth Company   


Geosynthetic-reinforced Bridge Abutments Part 1 – RESEARCH OUTCOMES

Session Chair: Jorge G. Zornberg, Ph.D., University of Texas
This special session (part one of two) is a compilation of the research components of the NCHRP 24-41 report featuring technical paper presentations that include those aspects which led to recommendations for AASHTO modifications

Welcome and Project Overview
Jorge G. Zornberg, Ph.D., University of Texas

Technical Paper Presentations:
Load-carrying GMSE Bridge Abutments: Lessons Learned from Experimental Evaluations
Amr Morsy, Ph.D., Loughborough University
Load-carrying GMSE Bridge Abutments: Lessons Learned from Field Monitoring Evaluations
Burak Tanyu Ph.D., George Mason University; and Fitsum Gebremariam, Ph.D., Arup
Load-carrying GRS Bridge Abutments: Lessons Learned from Numerical Evaluations
Panpan Shen, Ph.D., Tongji University and Jie Han, Ph.D., University of Kansas


Geosynthetic-reinforced Bridge Abutments Part 2 – RECOMMENDATIONS

Geosynthetic-reinforced Bridge Abutments Part 2 – RECOMMENDATIONS
Session Chairs: Dov Leshchinsky, ADAMA and Barry Christopher, Christopher Consulting
This special session (part two of two) focuses on recommendations for the design of L-C G-R Bridget Abutments.

Short Presentations:
Welcome and Context of the Discussion
Dov Leshchinsky, ADAMA and Barry Christopher, Christopher Constultants
Evidence from FHWA’s GRS-IBS program that supports the adoption of closely spaced reinforcements
Jennifer Nicks, FHWA
General design and construction aspects from FHWA’s GRS-IBS program that apply to L-C G-R Bridge Abutments
Daniel Alzamora, FHWA
NCHRP 24-41 recommended AASHTO Modifications
Jorge G. Zornberg, Ph.D., University of Texas


Q&A Panel Discussion
Moderators: Dov Leshchinsky, Barry Christopher
Panelists: Jennifer Nicks and Daniel Alzamora, FHWA; Jie Han, PhD, University of Kansas; Burak Tanyu, Ph.D, George Mason University; Jorge Zornberg, Ph.D., University of Texas


High-Performance Turf Reinforcement Mats (HP-TRMs)

High-Performance Turf Reinforcement Mats (HP-TRMs)
(Organized by GSI)
George Koerner, GSI, Joel Sprague TRI and Drew Loizeaux, Propex

High Performance Turf Reinforcement mats (HP-TRMs) have taken erosion control with natural vegetation to a whole new level. Reinforced vegetation can now handle many times the velocity and shear stresses of natural turf; sites that were once the sole domain of hard armor are now within the purview of HP-TRMs.

This session will cover HP-TRM testing, properties, specifications and field case histories during the technical session. The speakers will demonstrate the logic of combining engineering ideas and principles for improving the environment through earth-friendly erosion control practice and procedures.

It will include discussions of: Concerns and mechanisms of channel and slope erosion, GS erosion control products currently available in the market, simulated laboratory and field tests for identifying unique product variables for the purpose of documenting field behavior based on cost/benefit performance, credible analytic modeling and design guidance of situations from routine to exotic applications for both channels and slope erosion will be presented along with recommendations and conclusions.
Erosion and its control is a massive (and worthwhile) target application for geosynthetics. Quantification of such HP-TRM enhancement will be discussed. In so doing, geosynthetic applications are compared insofar as their sustainability (i.e. embodied carbon) to the same applications using traditional construction materials. The status of geosynthetics erosion control materials and HP-TRMs will be offered. It is felt that geosynthetics options are indeed viable for many of these extreme applications and will be dependable for very long service lifetimes. As such, geosynthetics provide better and longer performance than traditional materials as well as less costly solutions and thus enhance “relative sustainability.” This takes into account all of the directly applicable material and labor requirements. As will be seen, the traditional civil engineering materials contribute greatly to the embodied carbon of any construction project. By avoiding or minimizing the use of these traditional materials through utilization of geosynthetics, the latter will help to reduce the inherent embodied carbon on projects where erosion control is an issue.


Importance of Drainage, and Role of Geosynthetics, in MSE Structure Performance

Importance of Drainage, and Role of Geosynthetics, in MSE Structure Performance
(Organized by AMSE)
Drainage is an essential component of every soil structure, including Mechanically Stabilized Earth (MSE) structures.  Uncontrolled water flow adjacent to, under or through a reinforced soil mass can impact the structure’s short- and long-term performance.  Regardless of the permeability of the reinforced soil, it is poor and risky practice to intentionally – or unintentionally – allow water to flow through MSE structures.  Therefore, effective interception, management, and removal of water are critical to achieving the intended MSE structure performance.  Design and selection of appropriate drainage features and products is the responsibility of the owner and the geotechnical design team.

Geosynthetic materials such as composites, membranes, and fabrics can direct water away from MSE backfill and facings, reducing infiltration and helping to maintain the as-designed MSE geotechnical and structural properties.  Speakers in this Special Session will review essential design concepts related to MSE drainage and present case histories illustrating how several drainage-specific geomaterial products have been used to protect MSE structures from the water around them.  Build on your drainage knowledge and learn about geomaterial drainage products in this Special Session.

MSE Structure Drainage – Critical to Success
Robert Gladstone
MSE SRW Drainage Systems in Water Applications – Case Study of 1992 Army Corps Flood Control Project
Karen Nelson
Geocell MSE Earth Retention in Drainage Applications
Bryan Wedin
Use of Geosynthetic and Natural Materials Combined with MSE Technology to Raise a Dam
Robert Johnson
External Drainage to MSE Structures: Combining the Benefits of Concrete and Geosynthetics in GCCMs
Lee Church
Case Studies of MSE Panel Walls in Hydraulic Applications
Keith Brabant


Technical Paper Sessions

Advancements in Sediment Control

Advancements in Sediment Control

(Organized by IGS-NA)
Session Chairs: C. Joel Sprague, TRI Environmental Inc., and James E. Sprague, TRI Environmental Inc.

Technologies Used for Sediment Control: How Are They Tested and How Do They Perform
J. Blake Whitman, Middle Tennessee State University

Objective Performance Assessment of Toe-of-Slope Sediment Retention Devices (SRDs)
C. Joel Sprague and James E. Sprague, TRI Environmental Inc.

Geosynthetic Advancements in Sediment Control Technologies: Socks and Wattles–An Evolving Technology
Britt Faucette, Filtrexx International

Use of Geotextile Filtration Fabric with Skimmers for Stormwater Quality
James McCutchen, Rymar Waterworks Innovations


Case Histories

Case Histories

(Organized by IGS-NA)
Session Chairs: John Allen, Owens Corning, and Kush Chohan, McMillen Jacobs Associates

Reinforcement Over Soft Soils with High-Strength Geogrids: Case Studies
Marianna Ferrara, Maccaferri Inc.

Water-Filled Barrier Walls for Stormwater and Sediment Control on Steep Slopes
Chase Hemming and Josef Tootle, ENGEO Inc.

The Economics of Open Top Reservoirs and Floating Covers
Brian Fraser and Daniel Lotufo, Layfield Geosynthetics


Environmental 1 & 2

Environmental 1

Session Chair: Jim Olsta, Olsta Consulting LLC

High-Density Polyethylene (HDPE) Lined Produced/ Flow-back Water Evaporation and Recycling Ponds
Neil Nowak, SCS Engineers

Dipole Measurement Density and Dipole Spacing for Electrical Leak Location
Abigail Gilson-Beck, TRI Environmental Inc.

Evolution in Geosynthetics Starts with Utilizing Technology
Gregory Pignataro, David Scherbaty and Evan Bao, COMANCO


Environmental 2
Session Chair: Jim Olsta, CETCO MTI

Hydraulic Conductivity of Bentonite-Polymer Geosynthetic Clay Liners to Coal Combustion Product Leachates
Dong Li and Kuo Tian, George Mason University

New Geomembranes for Challenging Containment Applications: Formulations for Site-Specific Chemistry and Environmental Conditions
Javier Paez, Gabriel Martín, Jorge Fernandez and Marc Amtsberg, Atarfil

Stress-Cracking Resistance of a Bi-modal P E-RT HDPE Geomembrane
Rohit Sati, Layfield Group Ltd.; David Beaumier, CTT Group


Erosion Solutions 1 & 2

Erosion Solutions 1

Session Chairs: Brian Baillie and Bryan Hamilton, TenCate Geosynthetics

The Use of Geotextile Tubes to Protect the Historic Lighthouse Located on the Delaware Bay
Nathalia P. B. de Castro and Tom Stephens, TenCate Geosynthetics

Creating a Green, Soft, Living Shoreline Using Sand-Filled Composite Geotextile Tubes and Native Species of Vegetation
Tom Stephens, TenCate Geosynthetics; Joe Little, Little Environments PLLC

Engineered Geotextile Solutions for Inland Waterway Erosion Protection
Bryan Hamilton, TenCate Geosynthetics Americas Environmental Infrastructure Group; Jun Yuen Tan, TenCate Geosynthetics Asia Water and Environment; Tack Weng Yee, TenCate Geosynthetics Asia


Erosion Solutions 2
Session Chairs: Brian Baillie and Bryan Hamilton, TenCate Geosynthetics

25 m3 Geotextile Bags and Geotextile Tubes Used to Protect a 42-Inch Pipeline Against Scouring, 30 m Deep on the Seabed, Coveñas, Colombia, S.A.
Nicolas Ruiz, Tencate Geosynthetics Americas; Mauricio Rendon, Geosoluciones de Ingenieria SAS

Natural Sand Accumulation with Submersible Geotextile Geometries
Skylar Tibbits, Jared Laucks, Schendy Kernizan, Jeremy Bilotti and Alice Song, Self-Assembly Lab, MIT; Sarah Dole and Hassan Maniku, Invena; Tom Stephens, TenCate Geosynthetics

Performance of Fiber-Reinforced Bio-Brick Against Water Erosion
Lin Li and Shihui Liu, Tennessee State University


Geosynthetic Barriers

Geosynthetic Barriers

(Organized by IGS)
Session Chair: Boyd Ramsey, Boyd Ramsey Consulting LLC

Hydraulic Conductivity of Bentonite-Polymer Composite Geosynthetic Clay Liners Permeated with Bauxite Liquor
Jiannan Chen, University of Central Florida; Sarah A. Gustitus, University of Virginia; Craig H. Benson, University of Virginia

Using Bentonite-Polymer Composite Geosynthetic Clay Liners to Contain Coal Combustion Product Leachates
Jiannan Chen, University of Central Florida; Sarah A. Gustitus, University of Virginia; Craig H. Benson, University of Virginia

The Fundamentals of Geomembrane Seaming and Weld Quality
Glen W. Toepfer, CQA Solutions Ltd.


Geosynthetic Clay Liners

Geosynthetic Clay Liners

(Organized by IGS-NA)
Session Chairs:
 Bruno Herlin, Terrafix Geosynthetics Inc., and Kent von Maubeuge, NAUE GmbH & Co. KG

Premature Hydration of Geosynthetic Clay Liners
Bruno Herlin, Terrafix Geosynthetics Inc.; Bill Kennedy and Ryan Ackerman, TAG Environmental Inc.

Flow-Swell Index as an Indicator of Chemical Compatibility of Bentonite-Polymer Composite Geosynthetic Clay Liners
Sarah Gustitus-Graham and Craig Benson, University of Virginia

Implications of the Effect of Freeze-Thaw Cycles on a GCL Performance and Potential Leakage Through Covers over Arctic Mine Waste
Farah Barakat, R. Kerry Rowe, Farhana Jabin, and Richard Brachman, Queen’s University


Geosynthetic Testing and Properties

Geosynthetic Testing and Properties

(Organized by IGS-NA)
Session Chairs:
 Eric Blond, Eric Blond Consultant, and Pietro Rimoldi, Consultant

Interface Shear Testing: Specifying, Review and Available
ASTM References

J. P. Kline, Geotechnics Inc.

Designing Geotextiles for Filtration: A Review of the State of the Practice, Development of Design Standard ISO 18228-3
Eric Blond, Eric Blond Consultant

Laboratory Mechanical Property Testing for Turf Reinforcement Mats
Yue Xu, J. David Frost and Susan E. Burns, School of Civil and Environmental Engineering, Georgia Institute of Technology

Comparison of Post-Peak Strengths and Shear Displacements for Multi Layer and Single-Interface Tests for Composite Liner Systems
Thevachandran Shenthan and Kris Khilnani, Advanced Earth Sciences Inc.; Timothy Stark, University of Illinois at Urbana-Champaign


Geosynthetics in Pavements

Geosynthetics in Pavements

Session Chairs: David Andrews, Propex GeoSolutions; Eli Cuehlo, TRI Environmental Inc.; and Fan Gu, Auburn University

Evaluation of Bond Strength, Permeability and Recyclability of Geosynthetic Products
Fan Gu, National Center for Asphalt Technology; David Andrews, Propex GeoSolutions; Mark Marienfeld, TreadMark Inc.

Feasibility of Measuring the Performance of Pavement Interlayers Using Full-Scale Rolling Wheel Load Testing Device
Eli Cuelho, TRI Environmental Inc.; David Andrews, Propex GeoSolutions

Asphalt Strain Response of Geosynthetic-Reinforced Asphalt Overlays Under Static Plate Loads
V Vinay Kumar, Gholam Hossein Roodi and Jorge G. Zornberg, University of Texas

Large-Scale Laboratory Box Testing as a Performance Test for Geosynthetic Base Reinforcement in Pavement Applications
Jeb S. Tingle and William J. Robinson, U.S. Army Engineer Research and Development Center; Eli Cuelho, TRI Environmental Inc.; Erol Tutumluer, University of Illinois at Urbana-Champaign


Ground Improvement

Ground Improvement

(Organized by IGS-NA)
Session Chairs:
 John McCartney, University of California, San Diego; and Yewei Zheng, Wuhan University

Design of Reinforcement Geosynthetics in Landfill Piggyback Expansion
Jean-Baptiste Duquet, Antea Group; Cédric Sarbach, Afitexinov; Stephan Fourmont, AFITEX-Texel

High Vertical Loads on Soft Foundation Soils Supported by Rigid Inclusions and High-Strength/Modulus Geosynthetic-Reinforced Load Transfer Platforms
Lilma Schimmel, Huesker Inc.; Alex Potter-Weight, Menard Group USA

Geosynthetics for Solar Farm Stabilization
Ashley MacMillan, TenCate Geosynthetics

Performance of Prefabricated Thermal Drains in Soft Clays
John McCartney and Radhavi Samarakoon, University of California, San Diego


GRS Abutments

GRS Abutments

(Organized by IGS-NA)
Session Chairs: 
Kianoosh Hatami, University of Oklahoma, and Ben Leshchinsky, Oregon State University

Illinois’s Second GRS–IBS
David Liu, Former employee of TranSystems Corp.

Load-Bearing Performance of GRS Abutments with Different Facing Alternatives
Kianoosh Hatami, University of Oklahoma; Ridvan Doger, A&M Engineering and Environmental Services Inc.

Sheffield GRS–IBS: Thermal Interaction Between Superstructure and Substructure
Michael Adams and Jennifer Nicks, Federal Highway Administration, Turner-Fairbank Highway Research Center; Mohammad Khan, High Performance Technologies Inc. (HPTech)


Innovative Applications 1 & 2

Innovative Applications 1

Session Chair: Rutuparna Joshi, Watershed Geo

Prediction Models for Deformation and Punching Shear Resistance of Geogrid-Reinforced Working Platforms Under Tracked Plant
Arash Khansari and Lars Vollmert, BBG Bauberatung Geokunststoffe GmbH & Co. KG; Christopher Quirk and Jörg Klompmaker, NAUE GmbH & Co. KG

Monitoring and Warning System Including a Bi-Modulus Geosynthetic for the Reinforcement of Cohesive Soil on Cavities
Mathilde Riot, Afitexinov; Cyrille Balland, Ineris; Philippe Delmas, Consultant; Pascal Villard, Maria Delli Carpini and Fabrice Emeriault, 3SR, Université de Grenoble; Stephan Fourmont, Afitex-Texel

High-Strength Polymeric Geocell-Reinforced Railway Line Repair in Degraded Permafrost Condition
Sanat Pokharel, Stratum Logics Inc.; Marc Breault, Paradox Access Solutions Inc.

Geosynthetic Portable Coffer Dams for Civil Construction Applications
Brian Fraser, Layfield Geosynthetics; Mike Neal, Layfield USA


Innovative Applications 2
Session Chair: 
Rutuparna Joshi, Watershed Geo

Numerical Modeling on the Use of Geotextiles to Reinforce Buried HDPE Pipes Subjected to Localized Ground Subsidence
Min Zhou, North University of China; Fei Wang, Tarleton State University; Yan-Jun Du, Southeast University

The Effectiveness of Geosynthetic Protection of Buried Pipes from Static Loads based on Pipe Stiffness
Ryan Corey, RTE Technologies; Deep Khatri, United Consulting; Jie Han and Robert Parsons, University of Kansas

Landfill Closure with Engineered Turf Cover
Ming Zhu, Bryan Scholl, and Rutuparna Joshi, Watershed Geosynthetics


Lightweight Backfill

Lightweight Backfill

Session Chairs: Fei Wang, Tarleton State University and Ryan Corey, RTE Technologies

Reduction of Lateral Earth Pressures behind Retaining Walls Using EPS and Geosynthetic Reinforcement
Hao Liu, Jie Han and Robert Parsons, University of Kansas

Ultra-Lightweight Foamed Glass Aggregate as MSE Wall Backfill: Properties and Case Studies
Theresa Loux and Archie Filshill, Aero Aggregates of North America, LLC

Effects of Geofoam Geometry and Location on Vertical Stresses on Buried Culverts during Construction and under Surface Loading
Mahdi Al-Naddaf and Sajjad Emad Rasheed, University of Kerbala; S. Mustapha Rahmaninezhad, Terracon Consulting Inc.; Jie Han, University of Kansas



Roadways 1 & 2

Roadways 1

Session Chairs: Asif Ahmed, SUNY Polytechnic Institute and Mohammad Sadik Khan, Jackson State University

Depth of Influence of a Wicking Geotextile below the Flexible Pavement Constructed over Expansive Subgrade
Nripojyoti Biswas, Anand Puppala, Md Ashrafuzzaman Khan, and Surya Sarat Chandra Congress, Texas A&M University; Sayantan Chakraborty, Texas A&M Transportation Institute

In Situ Assessment of Geogrid Stabilized Flexible Pavement Using Automated Plate Load Testing Prajwol Tamrakar and Mark H. Wayne, Tensar International Corporation; David J. White and Pavana K. R. Vennapusa, Ingios Geotechnics, Inc.

Unpaved Access Road Utilizing Polymeric Geocell Reinforcement over High Water Bearing Muskeg
Timothy Yii, Sanat Pokharel, and Murtaza Ali, Stratum Logics Inc.; Marc Breault, Paradox Access Solutions

Sponsored by:


Roadways 2
Session Chairs: 
Asif Ahmed, SUNY Polytechnic Institute and Mohammad
Sadik Khan, Jackson State University

Inverse Analysis Method on the Performance
Evaluation of Geosynthetic Reinforcements in Highway
Pavement on Expansive Soils

Debojit Sarker and Jay Wang, Louisiana Tech University

A State-of-the-Art Large-Scale Laboratory Approach to Evaluating the Effectiveness of Geogrid Reinforcement in Flexible Pavements
Hossein Alimohammadi, Vernon Schaefer, Junxing Zheng and Guangfan Zheng, Iowa State University; David White, Ingios Geotechnics Inc.

Life-Cycle Cost Analysis of Geotextile Separator Layer in
Low-Volume Secondary Pavement

Chaz Weaver and Audrey Moruza, Virginia Department of Transportation



Walls, Embankments and Slopes

Walls, Embankments and Slopes

Session Chair: Amr Morsy, Loughborough University

Case Study: Geosynthetic Wrap-Face Vegetated MSE Walls for Enhancing Public Works Projects
Stanley Miller, University of Idaho; Todd Larson and Drew Loizeaux, Propex GeoSolutions

Simplified Method for Calculating Vertical Stresses in Limited-Space Geosynthetic-Reinforced Soil Walls
Yuqiu Ye and Jie Han, University of Kansas; Jamal Kakrasul, Soran University; Rui Rui, Wuhan University of Technology

Limit Equilibrium Analysis of Geosynthetic-Reinforced Retaining Wall Supported Footings
S. Mustapha Rahmaninezhad, Terracon Consulting Inc; Jie Han, University of Kansas; Mahdi Al-Naddaf, University of Kerbala; Jaber Mamaghanian, Iran University of Science and Technology