Geosynthetics June/July 2021 - 6

EDITORIAL
Geosynthetics in action
T
Geosynthetics
his issue of Geosynthetics magazine will focus on three distinct applications
of geosynthetics.
As the first feature, " NPA Geocell for a Railway Line Repair in a
Todd R. Berger
Senior Editor
+ 1 651 225 6939
trberger@ifai.com
Permafrost Region, " describes, it took more than two years to come up
with a workable, economical solution for repairs to the deteriorating railway
line to Churchill, Man., Canada, the only land access to the remote town
on Hudson Bay. Warming of the permafrost under the rail line and a major
flood in 2017 caused extensive damage to the railway, rendering it unusable.
All basic supplies for Churchill were subsequently flown in by airplane. The
authors recommended high-strength novel-polymeric alloy (NPA) geocells
for the repairs to the track, and the multiple repairs were completed in
five weeks at a cost that was 20%-25% of the initially anticipated cost. The
authors explain in words and photographs how the project was executed.
Sometimes, landfills need to be expanded. Often land is available next
to a landfill to expand it, but in other cases, landfills need to be expanded
vertically. The authors of " Design of Reinforcement Geosynthetics in
Landfill Piggyback Expansion " had such a case of a vertical expansion of
a landfill. They explain that " the selected reinforcement geosynthetic is
a high-modulus woven geotextile made with high-tenacity yarns, manufactured
by a warp-knitting process. The woven geotextile provides the
separation function, whereas the high-tenacity yarns give the high strength
capacity to the overall product. "
Geotextile tubes are a niche product of geosynthetics with multiple uses,
including erosion control on seashores, an application that has been covered
in this magazine. Dewatering is another application suitable for geotextile
tubes, and the authors of " Dewatering of Sludge from a Sewage Treatment
Plant with Geotextile Tubes " focus on the dewatering of the effluent from
a sewage treatment plant in a suburb of São Paulo, the largest city in Brazil.
The authors examine " the use of the dewatering technique in geotextile
tubes, providing the elevation of the solid content of the dewatered material,
decreasing its volume, and facilitating its handling as solid or semisolid. "
From the permafrost of northern Canada to the sprawling suburbs of
a South American city of 12 million people, geosynthetics do their jobs
efficiently, effectively and economically.
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IFAI MEMBERSHIP
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EDITORIAL ADVISORY COMMITTEE*
Melody A. Adams | Waste Management, USA
Sam R. Allen | TRI/Environmental, USA
Richard J. Bathurst | Royal Military College, Canada
Malek Bouazza | Monash University, Australia
Daniele A. Cazzuffi | CESI S.p.A., Italy
Archie Filshill | INOVA, USA
Ronald K. Frobel | R.K. Frobel & Associates, USA
Stephan M. Gale | Gale-Tec Engineering Inc., USA
John M. Gardner | Smith Gardner Inc., USA
Han-Yong Jeon | INHA University, Korea
Robert E. Mackey | S2L Inc., USA
Kent von Maubeuge | NAUE GmbH, Germany
Dhani Narejo | Narejo Inc., USA
Jim Olsta | HUESKER Inc., USA
Ian D. Peggs | I-Corp International, USA
Robert Phaneuf | N.Y. State DEC, USA
Marco A. Sánchez | ML Ingeniería, Mexico
Mark E. Smith | RRD International Corp., USA
L. David Suits | LDS Geosynthetic Consulting Services, USA
Richard Thiel | Thiel Engineering, USA
Gary L. Willibey | ESP/SKAPS Industries, USA
Aigen Zhao | AGZ International LLC, USA
*The Editorial Advisory Committee reviews selected
papers, case histories and technical editorial copy in
its areas of expertise. Individual advisors do not review
every submission. Statements of fact and opinion are
the author's responsibility alone, and do not imply
the viewpoints of Geosynthetics, the Editorial Advisory
Committee, the editors or the association.
THE OFFICIAL PUBLICATION OF
Geosynthetics is an international, bimonthly publication for civil engineers, contractors and
government agencies in need of expert information on geosynthetic engineering solutions.
Geosynthetics presents articles from field professionals for innovative, exemplary practice.
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6
Geosynthetics | June July 2021

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Geosynthetics June/July 2021

Table of Contents for the Digital Edition of Geosynthetics June/July 2021