Events

The World of Coal Ash 2022 announces new dates

February 24, 2021

The American Coal Ash Association (ACAA) and the University of Kentucky Center for Applied Energy Research announced the dates for the World of Coal Ash 2022. The conference was originally scheduled for May 2021, but it was delayed due to Covid-19 precautions. WOCA 2022 will be held May 16–19, 2022, at the Northern Kentucky Convention …

Case Study

Impermeable geomembrane for a Baltimore reservoir cofferdam

February 22, 2021

Druid Hill Reservoir is a one-billion-gallon (55-acre) potable water storage reservoir that supplies Baltimore, Md., and surrounding counties. Druid Hill Reservoir was constructed between 1863 and 1871 and is one of the largest earthen dammed lakes in North America. In 1971 it was named a National Historic Civil Engineering Landmark by the American Society of …

Industry News

Geosynthetic prices increase due to spike in polypropylene resin costs

February 19, 2021

Polypropylene (PP) resin and other plastic resins have experienced a rapid price increase over the past three months, affecting the cost of geosynthetic products, according to Fred C. Chuck, P.E., executive director of the Geosynthetic Materials Association (GMA) at Industrial Fabrics Association International. “Market conditions continue to remain highly volatile, with resin availability and pricing …

Industry News

IECA Region One aligns association structure with strategic plan

February 18, 2021

With the reunification of the International Erosion Control Association (IECA) Region One and Region Two, the IECA board of directors is making structural changes to support incoming members and to create a solid backbone for the future. Structural changes include: The board promoted Samantha Roe, IOM, to Chief Executive Officer of the association. Members from …

Case Study

Ocean City, N.J., plans more geotextile tubes to protect beaches

February 17, 2021

By Maddy Vitale In a continuing effort to protect Ocean City’s beaches from coastal storms that chip away at the coastline, the New Jersey city is moving forward with plans to install another barrier in the areas most vulnerable to erosion. Geotextile tubes are gigantic sock-like cylinders made of plastic fabric and stuffed with sand. …

Industry News

Twenty-five states introduce transportation funding bills

February 16, 2021

State legislators in half the country introduced 61 transportation funding measures during January, according to the American Road & Transportation Builders Association’s Transportation Investment Advocacy Center (ARTBA-TIAC). They are seeking to bridge construction and repair revenue shortfalls created by past failures to keep up with investment needs, economic disruption caused by the COVID-19 pandemic and …

Case Study

Layfield USA completes two CSPE reservoirs

February 15, 2021

Layfield USA Corp. announced the completion of the supply and installation of a chlorosulfonated polyethylene (CSPE) liner and floating cover system as part of a refurbishing and upgrade project for Pittsburgh Water & Sewer Authority’s (PWSA) Lanpher Reservoir. The Lanpher Reservoir is a double reservoir, potable water storage system (East and West reservoirs) with a …

Industry News

ASTM International geosynthetics committee developing proposed vinyl sheet piling standard

February 12, 2021

ASTM International’s geosynthetics committee (D35) is developing a proposed standard that covers vinyl sheet piling used in marine and geotechnical fields for seawalls, retaining walls, flood walls, erosion control and pollution cutoff. According to ASTM member Steve Hargrave, innovation and engineering director at CMI Limited, the proposed standard (WK75165) will fill the need for a …

Industry News

Civil engineers give Ohio’s infrastructure a “C-” in 2021 Infrastructure Report Card

February 12, 2021

Grades across 16 categories span from a B to a D. The Ohio Council of the American Society of Civil Engineers (ASCE) unveiled its 2021 Report Card for Ohio’s Infrastructure on Feb. 11, issuing grades from B to D for 16 categories pertinent to Ohio, including: bridges (C+), dams (C-), drinking water (D+), energy (C), hazardous …

Company News

Tensar (U.K.) commits to 100% renewable energy

February 11, 2021

All the electricity used by Tensar International Ltd. in the U.K. in manufacturing its geogrid products is now certified to come from renewable sources. The switch to a renewable energy supplier, which took place on Oct. 1, 2020, is one of several initiatives introduced by Tensar in recent years to reduce its environmental impact, said …

Expo News

Standard for active illumination developed in Europe

November 16, 2020

In a session at IFAI Virtual Expo 2020, “Smart Textiles Standardization, Active Illumination,” Dr. Jan Beringer, senior scientific expert Hohenstein Group, explained the new standard for active illumination that will soon be implemented in European Union countries.  Organizations worked together to develop the standards. It is notable, he said that both textile and electronics industries …

Expo News

Rapid prototyping = faster market launch

November 16, 2020

A presentation at IFAI Virtual Expo 2020, titled, “Rapid Prototyping and Textile Product Development” urged attendees to use “sticks and glue … whatever method you have to get your idea out there.” The presenter, Dr. Andre West, director of the Zeis Textiles Extension (ZTE), Wilson College of Textiles, NC State University, may not have meant …

Expo News

The larger issues in respiratory protection

November 12, 2020

Dr. Bryran Ormond, assistant professor, Wilson College of Textiles, NC State explained respiratory protection in an “Ask an Expert” session with Jing Liang, Medical PPE Consulting LLC. Dr. Ormand has typically worked in the area of chemical and biological protective equipment, but with the onslaught of the pandemic, began to focus on respiratory protection generally, …

Expo News

Rodgers: Textiles are the “T” in STEM

November 11, 2020

How do you create a channel from research to application? How do you create a pathway toward understanding complex human problems across supply chains and market sectors? STEM—a curriculum based on teaching science, technology, engineering and math—has branched out from basic chemistry and biology and physics classes, into collaborative efforts, including textiles, according to Stephanie …

Expo News

Partnerships in smart textile products

November 11, 2020

The second week of IFAI’s Virtual Expo 2020 advanced textiles educational sessions began with a presentation that illustrated the importance of collaboration. “Smart textiles for healthcare and wellbeing: a collaborative approach” had three presenters speaking from different perspectives, but with one, unified message about reaching across geographical distance and areas of expertise to create successful …

Expo News

Guidance offered in commercial insurance market

November 10, 2020

Wildfires, hurricanes, a pandemic and civil unrest have wreaked plenty of chaos on the commercial insurance market in 2020. Steve Christenson, with Marsh & McLennan Agency LLC, offered guidance to business owners Nov. 9 at IFAI Virtual Expo 2020. “The business insurance market has been going through several changes this year,” says Christenson, with U.S. …

Expo News

How to make your business attractive to a buyer

November 6, 2020

Thinking about selling your business—either to an outside party or the next generation? Then it’s time to start considering how your equipment and processes fit into your succession plan. Jonathan Palmer, the second-generation owner and CEO of equipment supplier Autometrix, and Autometrix director of global sales Truy Pham, led an educational session at IFAI Virtual …

Expo News

Research and development partnerships work one-on-one

November 6, 2020

The process of working with a research and development center was discussed in Dr. Thomas Stegmaier’s presentation, “Testing and Standards Integral to Timely Product Development.” Dr. Stegmaier is with DITF [Deutsche Institute Fur Textil Und Faserforschung Denkendorf], a large, textile research center located in Germany. It partners individually with industry participants to develop new technologies …

Expo News

Responsive textiles with infrared technology

November 5, 2020

In a presentation titled, “Amplifying Human Energy to Drive Performance and Recovery,” Hologenix LLC co-founder and CEO Seth Casden described the company’s Celliant® technology and explained how responsive textiles using infrared energy can increase tissue oxygen levels, which can improve athletic performance and recovery, sleep quality and general health and wellness.  All sentient beings emit …

Expo News

A primer on Employee Stock Ownership Plans (ESOPs)

November 5, 2020

An Employee Stock Ownership Plan (ESOP) offers lots of attractive benefits: studies have shown that ESOPs improve productivity, increase sales and improve return on assets, plus they offer great tax advantages. But more than any of these attributes, an ESOP offers the owner of a company peace of mind and an enduring legacy. “Many times, …

Case Study

Impermeable geomembrane for a Baltimore reservoir cofferdam

February 22, 2021

Druid Hill Reservoir is a one-billion-gallon (55-acre) potable water storage reservoir that supplies Baltimore, Md., and surrounding counties. Druid Hill Reservoir was constructed between 1863 and 1871 and is one of the largest earthen dammed lakes in North America. In 1971 it was named a National Historic Civil Engineering Landmark by the American Society of …

Case Study

Ocean City, N.J., plans more geotextile tubes to protect beaches

February 17, 2021

By Maddy Vitale In a continuing effort to protect Ocean City’s beaches from coastal storms that chip away at the coastline, the New Jersey city is moving forward with plans to install another barrier in the areas most vulnerable to erosion. Geotextile tubes are gigantic sock-like cylinders made of plastic fabric and stuffed with sand. …

Case Study

Layfield USA completes two CSPE reservoirs

February 15, 2021

Layfield USA Corp. announced the completion of the supply and installation of a chlorosulfonated polyethylene (CSPE) liner and floating cover system as part of a refurbishing and upgrade project for Pittsburgh Water & Sewer Authority’s (PWSA) Lanpher Reservoir. The Lanpher Reservoir is a double reservoir, potable water storage system (East and West reservoirs) with a …

Case Study

Conductive liner for a copper mine reservoir

February 5, 2021

At a large copper mine in the U.S., a lined stormwater reservoir needed to be constructed for containment of runoff and process water. The integrity of the reservoir liner was critical as failure could result in contamination of groundwater. Solmax installed a double liner system, using Leak Location Conductive liner. This would ensure reliable electric …

Case Study

Stabilizing Oyster Lake’s outfall

February 1, 2021

Preserving a unique ecosystem with an environmentally friendly solution By Drew Loizeaux Coastal dune lakes are freshwater lakes located within 2 miles (3.2 km) of an ocean coastline. These rare ecosystems are only found in a handful of locations around the globe, including Madagascar, New Zealand, Australia and Walton County, Fla. Walton County is home …

Feature

Comparative analysis of the flow and filtration capabilities of sediment retention devices—Part 1

February 1, 2021

By James E. Sprague and C. Joel Sprague Sediment retention devices (SRDs) include silt fences, wattles, filter logs, compost socks and various types of stormwater inlet protectors and are a widely used best management practice (BMP) to provide sediment filtration from stormwater runoff while allowing water passage. However, SRD performance varies greatly in flow rate …

GMA Techline

The GMA Techline

February 1, 2021

Moderated by George R. Koerner BIOLOGICAL DEGRADATION OF PE AND PP Q: Can you please enlighten me on the biological degradation of polyolefin polyethylene (PE) and polypropylene (PP)? A: Within the various plant forms of biological life, i.e., bacteria, actinomycetes, fungi and algae, polymer degradation is essentially nonexistent due to high molecular weight of the common …

Feature

Bituminous geomembranes (BGM) for ponds in mining

February 1, 2021

By Natalie Daly and Bernard Breul  Bitumen has emerged as a standard 20th-century waterproofing material in civil and water engineering in the form of bituminous concrete, asphalt and bituminous geomembranes. The first applications of bituminous geomembranes (BGM) were in France in 1975 near Grenoble and for potable water storage reservoirs at a 6,562-foot (2,000-m) altitude …

Feature

Premier Product Preview offers first look at new products and services

February 1, 2021

Here is your first look at some of the new products and services that will be available from companies in 2021.  Geosynthetics Virtual Conference 2021 is co-locating with the IECA Annual Virtual Conference and Expo. The 2021 virtual show floor will bring together exhibitors covering the gamut of geosynthetic products and services. Registrants for the …

Case Study

Base stabilization at Port of Invergordon, U.K.

January 18, 2021

A new 365,973-square-foot (34,000-m2) container area was required in the Port of Invergordon, U.K. The area was constructed as an unbound pavement with a crushed gravel surface. Presto GeoSystems GEOWEB geocells presented an excellent solution to minimize the overall cross-section depth through its unique load transfer mechanism while controlling differential settlement in the heavily loaded …

GMA Techline

The GMA Techline

February 1, 2021

Moderated by George R. Koerner BIOLOGICAL DEGRADATION OF PE AND PP Q: Can you please enlighten me on the biological degradation of polyolefin polyethylene (PE) and polypropylene (PP)? A: Within the various plant forms of biological life, i.e., bacteria, actinomycetes, fungi and algae, polymer degradation is essentially nonexistent due to high molecular weight of the common …

GMA Techline

The GMA Techline

October 1, 2020

Moderated by George R. Koerner Puncture after NDT Q: I would like your opinion on the fate of punctures in the air channel leftover from nondestructive air channel tests (NDTs), specifically in regard to sealing the air channels to prevent leachate or water ingress. We are particularly concerned with this situation on a landfill cover …

GMA Techline

The GMA Techline

August 1, 2020

Seaming dissimilar geomembranes Q: I kindly request your technical support in the questions below: A nonpolyethylene geomembrane was used in phase 1 of the tailings dam waterproofing system of a gold mine. For the expansion (phase 2), the use of a high-density polyethylene (HDPE) geomembrane is being evaluated. How can the HDPE geomembrane join the bituminous …

GMA Techline

The GMA Techline

June 1, 2020

Moderated by George R. Koerner Minimum sediment thickness Q: We are going to construct some evaporation ponds on existing sediment on top of a Hypalon geomembrane. The sediment looks to be predominantly fine. The subgrade condition below the liner is not known for sure. In such conditions, can you recommend a minimum sediment thickness that …

GMA Techline

The GMA Techline

April 1, 2020

Moderated by George R. Koerner and Y. “Grace” Hsuan Welding Rod Q: This question is in regard to the welding rod intended for welding of geomembranes (both high-density polyethylene [HDPE] and linear low-density polyethylene [LLDPE]). Are there any GRI GM13- or GM17-based requirements for welding rods or are there any white papers or specifications? I …

GMA Techline

The GMA Techline

February 1, 2020

Moderated by George R. Koerner and Y. “Grace” Hsuan DARCIAN PERMEABILITY Q: I am aware of the section in your book regarding geomembrane “permeability” and get from it that it aims to calculate an equivalent Darcian permeability using vapor diffusion via Fick’s law. Can one use the derived permeability then when calculating flow using Darcy’s …

GMA Techline

The GMA Techline

August 1, 2019

Moderated by Robert M. Koerner, George R. Koerner and Y. “Grace” Hsuan A geotextile for unpaved driveway/road? Q: Is there any point in using a 150 g/m2 (4.4 oz/yd2) nonwoven geotextile in building an unpaved gravel driveway or gravel road? If so, what should be the most important characteristics of the fabric and what are …

GMA Techline

The GMA Techline

June 1, 2019

Who is doing the testing? Q: This question relates to the number of rolls to be selected as the lot sample for specification conformance testing and refers to ASTM D4354. When I look at this standard, it appears the values in Table 1 of GRI’s White Paper #10 refer to the number of units to …

GMA Techline

The GMA Techline

April 1, 2019

Vegetation causing gases under geomembrane? Q: I have a site where we are installing a high-density polyethylene (HDPE) liner in an existing pond. Because of some residual heavy metals in the top layer of soil, I would like to strip off the top 3–6 inches (7.6–15.2 cm) of soil and vegetation. Alternatively, we could mow and …

GMA Techline

The GMA Techline

February 1, 2019

Geomembranes for canal lining Q: Our company is an international member of the Industrial Fabrics Association International (IFAI). Our government is planning to line their water canals with a geomembrane to prevent water seepage into the soil. We have been approached by many to suggest the most suitable material with specifications to guide them in …

Events

The World of Coal Ash 2022 announces new dates

February 24, 2021

The American Coal Ash Association (ACAA) and the University of Kentucky Center for Applied Energy Research announced the dates for the World of Coal Ash 2022. The conference was originally scheduled for May 2021, but it was delayed due to Covid-19 precautions. WOCA 2022 will be held May 16–19, 2022, at the Northern Kentucky Convention …

Industry News

Geosynthetic prices increase due to spike in polypropylene resin costs

February 19, 2021

Polypropylene (PP) resin and other plastic resins have experienced a rapid price increase over the past three months, affecting the cost of geosynthetic products, according to Fred C. Chuck, P.E., executive director of the Geosynthetic Materials Association (GMA) at Industrial Fabrics Association International. “Market conditions continue to remain highly volatile, with resin availability and pricing …

Industry News

IECA Region One aligns association structure with strategic plan

February 18, 2021

With the reunification of the International Erosion Control Association (IECA) Region One and Region Two, the IECA board of directors is making structural changes to support incoming members and to create a solid backbone for the future. Structural changes include: The board promoted Samantha Roe, IOM, to Chief Executive Officer of the association. Members from …

Industry News

Twenty-five states introduce transportation funding bills

February 16, 2021

State legislators in half the country introduced 61 transportation funding measures during January, according to the American Road & Transportation Builders Association’s Transportation Investment Advocacy Center (ARTBA-TIAC). They are seeking to bridge construction and repair revenue shortfalls created by past failures to keep up with investment needs, economic disruption caused by the COVID-19 pandemic and …

Industry News

ASTM International geosynthetics committee developing proposed vinyl sheet piling standard

February 12, 2021

ASTM International’s geosynthetics committee (D35) is developing a proposed standard that covers vinyl sheet piling used in marine and geotechnical fields for seawalls, retaining walls, flood walls, erosion control and pollution cutoff. According to ASTM member Steve Hargrave, innovation and engineering director at CMI Limited, the proposed standard (WK75165) will fill the need for a …

Industry News

Civil engineers give Ohio’s infrastructure a “C-” in 2021 Infrastructure Report Card

February 12, 2021

Grades across 16 categories span from a B to a D. The Ohio Council of the American Society of Civil Engineers (ASCE) unveiled its 2021 Report Card for Ohio’s Infrastructure on Feb. 11, issuing grades from B to D for 16 categories pertinent to Ohio, including: bridges (C+), dams (C-), drinking water (D+), energy (C), hazardous …

Company News

Tensar (U.K.) commits to 100% renewable energy

February 11, 2021

All the electricity used by Tensar International Ltd. in the U.K. in manufacturing its geogrid products is now certified to come from renewable sources. The switch to a renewable energy supplier, which took place on Oct. 1, 2020, is one of several initiatives introduced by Tensar in recent years to reduce its environmental impact, said …

Events

ASCE offers virtual workshop: Geosynthetic-reinforced MSE walls, berms, embankments and slopes

February 10, 2021

The American Society of Civil Engineers (ASCE) will offer a two-day virtual workshop, “Geosynthetic-Reinforced MSE Walls, Berms, Embankments and Slopes,” on March 2 and March 4, 2021. Participants will have access to the virtual workshop video archives and materials for 60 days from the start day of the workshop. Virtual workshop brief Mechanically stabilized earth …

Company News

50 years of HUESKER HaTelit asphalt reinforcement

February 9, 2021

A success story that began 50 years ago: HaTelit asphalt reinforcements were first used in road construction in 1971. Today, they lead conventional rehabilitation methods in terms of sustainability and cost-effectiveness. Potholes, cracks and deformations are not only an annoyance for every car or bicycle user, they also pose a great danger to traffic participants …

Company News

Raven adds smooth-edge technology to extruded geomembranes

February 8, 2021

Raven now offers HydraLine in 23-foot (7-m) wide seamless, smooth-edge, textured mill rolls. Raven Industries Inc. announced that its Engineered Films division has incorporated new smooth-edge technology onto its seven-layer barrier extrusion line for the production of 23-foot (7-m) wide textured sheet geomembranes. The new smooth-edge extrusion process creates a high-quality smooth surface edge on …

Events

Webinar: Geosynthetics for coal combustion residual (CCR) applications

June 11, 2019

The Fabricated Geomembrane Institute (FGI) will sponsor a free webinar, “Geosynthetics for Coal Combustion Residual (CCR) Applications,” on June 25, from 12 p.m. to 1 p.m. CDT. This webinar will discuss the application of geosynthetic products for use in coal combustion residual (CCR) landfills and impoundments. The webinar will provide an overview of the available …

Industry News

Applications being accepted for DFI’s Women in Deep Foundations professional development grants

April 1, 2019

The DFI Educational Trust and the DFI Women in Deep Foundations Committee are awarding five grants of $1,750 each to women involved in design and/or construction of deep foundations to attend DFI’s 44th Annual Conference on Deep Foundations in Chicago, Oct. 15–18, 2019. The grant includes free conference registration and covers related expenses for attending …

Geogrids

Modeling demonstrates benefit of geogrid-reinforced aggregate base

December 21, 2018

Improved modeling of geogrid for use with the Minnesota Department of Transportation’s pavement design software, MnPAVE Flexible, will allow pavement designers to simulate field tests of stiffness and resiliency in pavements over bases with and without geogrid. The department, known as MnDOT, is using modeling results from a recent study to develop a design input that quantifies the …

Events

GSI to host short course on QA/QC in waste containment, GMA members get discounted rates

December 20, 2018

The Geosynthetic Institute (GSI) will sponsor a short course “Quality Assurance/Quality Control of Geosynthetics in Waste Containment Facilities,” Jan. 14–16, 2019, from 11 a.m. to 12:30 p.m. and 2 p.m. to 3:30 pm EST. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. This …

Industry News

FGI offers webinar on shear testing

December 17, 2018

The Fabricated Geomembrane Institute (FGI) will sponsor a free webinar “Geosynthetic Interface Shear Testing,” on Jan. 22, 2019, from noon to 1 p.m. CDT. In this presentation, Robert Swan of Drexel University will discuss the different methods of measuring geosynthetic interface shear strength, describe industry standard test methods and explore the accreditation process for laboratories …

Events

Christopher to present Koerner lecture series on ‘lessons learned’

December 14, 2018

Barry R. Christopher, Ph.D., P.E., will present the first in the 2019 Dr. Robert M. Koerner Award and Lecture Series on “Lessons Learned: An Adventure in 4 Decades of Geosynthetics Engineering” on Feb. 13, 2019, at the Geosynthetics Conference 2019 in Houston, Texas. The presentation will review his involvement in the development of geosynthetics engineering …

Company News

EPT introduces new string-reinforced LLDPE geomembrane

December 13, 2018

To meet the growing demand for linear low density polyethylene (LLDPE) by geomembrane fabricators and installers, Engineered Polymer Technologies (EPT) has announced a new string-reinforced LLDPE fabric. LLDPE has been in increasing demand due to its superior flexibility and better layflat versus high density polyethylene (HDPE). EPT has specially formulated its LLDPE fabric for high …

Industry News

FGI accepting applications for engineering innovation award

November 30, 2018

The Fabricated Geomembrane Engineering Innovation Award was created to recognize engineers who have creatively used fabricated geomembranes to successfully fulfill a client/owner’s needs, including technical requirements, scheduling and budget. Today’s engineers are working to solve environmental issues on a global scale. The Fabricated Geomembrane Institute’s (FGI’s) Fabricated Geomembrane Engineering Innovation Award competition pays tribute to …

GSI News

GSI to host webinar on stability designs for landfill covers, GMA members get discounted rates

November 29, 2018

The Geosynthetic Institute (GSI) will sponsor a webinar “Stability Designs of Landfill Cover Soils,” on December 12, from 11:30 a.m. to 1 p.m. EDT. GMA member companies and their employees receive discounted rates on all GSI webinar and short course registrations. This webinar focuses on the stability design of relatively thin soil layers over geosynthetics …

Industry News

Tensar to present technical seminar in Minneapolis

November 26, 2018

Tensar International Corp. will sponsor a technical seminar in Minneapolis, Minn., on Jan. 8, 2019, from 7:30 a.m. to 4 p.m. CDT. The seminar will be held at the Hyatt Regency Minneapolis. The seminar will cover a variety of geosynthetic applications, including roadways, pavement maintenance, walls and slopes, market solutions, airfields, mechanically stabilized earth (MSE) …