Geosynthetics December 2019/January 2020 - 41

GEOTEXTILES

PRODUCT DATA
FOR MORE INFORMATION
Geosynthetics magazine has provided
information on the geotextile specification
charts for comparative purposes only.
Designers should contact manufacturers
for additional details and to discuss sitespeciﬁc considerations.
Information on the use and specification
of geotextiles is also available from the
Geosynthetic Materials Association (GMA).
GMA
1801 County Road B West
Roseville, MN 55113-4061 USA
+1 651 225 6981
fax +1 651 631 9334
jmkivijarvi@ifai.com
www.GMAnow.com

PUBLISHER'S NOTE
Geosynthetics magazine compiled all
information included in the Geosynthetics 2020
Speciﬁer's Guide from information submitted by
ﬁrms in the geosynthetics industry. Companies
provided specifications voluntarily, and
specification accuracy is the responsibility
of the manufacturer. The appearance of a
listing in this directory is not an endorsement
of the company or product by Geosynthetics
magazine or the Industrial Fabrics Association
International (IFAI). The Geosynthetics 2020
Speciﬁer's Guide is intended as a guide, and
Geosynthetics magazine and IFAI encourage
readers to contact the companies listed for
further information.

Manufacturers engineer these products to provide costeffective solutions and to meet speciﬁc design requirements
for separation, reinforcement, ﬁltration, drainage and
protection applications.

lthough engineers have developed numerous applications for
geotextiles, there are ﬁve major functions: separation, reinforcement,
ﬁltration, drainage and protection. The major geotextile classifications
are woven, nonwoven and knitted. Generally, woven fabrics exhibit high
tensile strength, high modulus and low elongation. Needlepunched nonwoven
fabrics typically have high permeability as a result of high porosity and
conformability because of their high elongation characteristics. Thermally
spun, bonded, nonwoven fabrics typically have high modulus, compared to
needlepunched nonwoven fabrics, and high conformability. Depending on
the manufacturing process, knitted geotextiles can offer high tensile strength
and elasticity.
Geotextiles are available in a variety of structures and polymer compositions
designed to meet a wide range of applications. It is important that all geotextiles
be composed of strong, durable, chemically inert polymeric materials that are
resistant to the effects of site-specific ground conditions, weather and aging.
In permanent installations, long-term material performance is a result of the
polymer structure's durability. Depending on the application, geotextiles may
have other survivability requirements, such as creep resistance and resistance
to temperature and/or ultraviolet exposure.

The numbers
Companies that submitted product data chart lines were asked to provide data
determined through industry-accepted testing methods. Companies signed
a certificate of compliance verifying the accuracy of this data.

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Geosynthetics December 2019/January 2020

Table of Contents for the Digital Edition of Geosynthetics December 2019/January 2020