Question about AOS

June 1, 2012

From the GMA Techline RE: Question about AOS Can you help telling me how to calculate the apparent opening size (AOS) of a nonwoven geotextile if I have permittivity, permeability, flow rate, and thickness? Is it possible to do? (Jorge | Mexico) Reply: What a great question but, unfortunately, the answer is “No.” The reason …

Do floc characteristics influence geotextile tube dewatering performance?

By Brett W. Maurer and Shobha K. Bhatia Introduction Geotextile tubes have been successfully used by numerous industries to dewater a variety of high-water-content slurries and waste materials. Concurrent with the expanding use of geotextile tubes, the desire to reduce effluent turbidity and improve the speed of dewatering has led to the established use of …

Using geotextiles to stabilize horse arena surfaces

May 11, 2012

A horse apiece By Jessica Bies Under hoof at the 2012 Del Mar Grand Prix national horse show this year, a geotextile horse footing designed to enhance riding performance and also to protect the legs of the equine participants improved jumping conditions for several Olympic hopefuls. A combination of sand and shredded geotextiles or elastic …

GMA is helping to assure quality for DOTs

April 1, 2012

By Andrew Aho Geotextile manufacturers participating in public roadway applications are enrolling in a new program that requires a quality audit of their manufacturing facilities and their QA/QC processes. And, for the first time, it requires printing of the manufacturers’ name or identification number on the geotextile. The American Association of State Highway and Transportation …

Thrace expands its nonwovens into new markets

March 5, 2012

Benefit from company’s technology, flexibility, expertise extolled Thrace-LINQ, a supplier of woven and nonwoven geosynthetic technical fabrics, announced in a Feb. 28 press release that it is making market expansions with its needlepunched nonwoven product lines. The company said that “capitalizing on its state-of-the-art manufacturing capabilities, [it] has extended its line into new markets including …

New ASTM method aids use, evolution of geotextile bag technology

February 28, 2012

A new ASTM International test method that provides standardization for a long-used test will aid in the use and evolution of geotextile bag technology, according to a Feb. 24 ASTM press release. The release said that the new standard, ASTM D7701, “Test Method for Determining the Flow Rate of Water and Suspended Soils from a …

Overlay project wins Michigan award

February 15, 2012

Overlay project wins Michigan award TenCate’s geotextile interlayer cited by concrete association A road construction project in suburban Detroit that incorporated a geotextile fabric interlayer was recently recognized by the Michigan Concrete Association (MCA). The Little Mack concrete overlay was completed in St. Clair Shores, Mich. from 10 Mile Road to 12 Mile Road. The …

Geotextile-reinforced soil retaining wall for Hetaoyu Mine coal processing plant

February 1, 2012

This project, submitted by TenCate Geosynthetics, won an Award of Excellence in the 2011 International Achievement Awards(IAA) / Geosynthetics presented by the Industrial Fabrics Association International. Each project in its own special way, exhibits outstanding innovation, technical skill and design excellence. Submissions of geosynthetics projects for the 2011 International Achievement Awards are being accepted now. …

Geosynthetics at the Onondaga Lake cleanup

January 10, 2012

Largest geotextile tube project in U.S. As a result of more than a century of industrial activity on the shores of Onondaga Lake in Syracuse, N.Y., the lake’s sediments have been contaminated with chemicals and heavy metals such as lead, cobalt, and mercury. Due to this contamination, Onondaga Lake and related upland sites were added …

China geotextile growth continues in double digits

December 7, 2011

China’s output value of geotextiles reached 405,000 tons in 2010 and during the next five years it is anticipated to maintain annual double-digit growth, reaching 730,000 tons by 2015, according to announcements at the 2011 China Geotextiles Composite Materials Summit Dec. 3 in Lingxian, Shandong. From 2006-2010, China’s output of geotextiles saw an average annual …