Geosynthetics February/March 2023 - 40

GSI NEWS
N
GEOSYNTHETIC
INSTITUTE
GSI's mission is to develop
and transfer knowledge,
assess and critique
geosynthetics, and provide
services to the member
organizations.
geosynthetic- institute.org
By George R. Koerner
Connection strength of geosynthetics
anchored in concrete
early all geomembrane installations are fixed at the perimeter of the containment
by burying the liner in an anchor trench or by attaching it to concrete (i.e., a collar
wall, foundation, ring wall, manhole, vault, etc.). The standard approach for connecting
the geomembrane liner to concrete is to use anchor bolt geomembrane connections with
batten strip or Rondel connections, as described in ASTM D6497, " Standard Guide for
Mechanical Attachment of Geomembranes to Penetrations or Structures. " For polyolefin
(PE and PP) geomembranes, Rondels or embedment strips are the preferred methods of
attachment for the following reasons.
* Speed of installation: Welding to an embedment strip can reduce the time it takes to attach
a liner to concrete.
* Cost reduction: Stainless steel batten and anchors are expensive and labor intensive to
install and maintain.
* Application Flexibility: Embedment strips have been used in both horizontal and vertical
applications which provide positive fixity with more even stress distribution between the
geomembrane and the structure.
George R. Koerner, Ph.D.,
P.E., CQA, is the director of
the Geosynthetic Institute
in Folsom, Pa.
* Installation quality: It's important that
the embedment strip be affixed to the
forms so that it remains level or plumb
and has a good end-to-end (butt) connection,
which is welded. The point at
which the ends of the strips touch must
be welded to ensure containment.
* Thermal expansion/contraction considerations:
Materials have different
coefficients of thermal expansion and
contraction properties. This may present
additional considerations during
construction and long-term use for
geomembrane connections. Embedment
Rondels have shown excellent
long-term performance in changing
environment conditions, requiring little
or no maintenance over time.
Embedment high-density polyethylene (HDPE) liner is often used for concrete protection.
FIGURE 1 Photographs of various styles
of embedment liners
Studs in these geomembranes create a product with exceptional pullout strength and high
resistance to mechanical, chemical and environmental threats. Such embedment liners (Figure
1) can be used in a wide range of civil applications (Figure 2). To date, there has not been a
standard test method to determine the design strength for such systems. This has changed
with the advent of the Geosynthetic Research Institute (GRI) Method GS-31, Standard Test
Method for " Measuring the Connection Strength of Geosynthetic to Concrete or Mortar. "
http://www.institute.org

Geosynthetics February/March 2023

Table of Contents for the Digital Edition of Geosynthetics February/March 2023

Geosynthetics February/March 2023 - Cover1
Geosynthetics February/March 2023 - Cover2
Geosynthetics February/March 2023 - 1
Geosynthetics February/March 2023 - 2
Geosynthetics February/March 2023 - 3
Geosynthetics February/March 2023 - 4
Geosynthetics February/March 2023 - 5
Geosynthetics February/March 2023 - 6
Geosynthetics February/March 2023 - 7
Geosynthetics February/March 2023 - 8
Geosynthetics February/March 2023 - 9
Geosynthetics February/March 2023 - 10
Geosynthetics February/March 2023 - 11
Geosynthetics February/March 2023 - 12
Geosynthetics February/March 2023 - 13
Geosynthetics February/March 2023 - 14
Geosynthetics February/March 2023 - 15
Geosynthetics February/March 2023 - 16
Geosynthetics February/March 2023 - 17
Geosynthetics February/March 2023 - 18
Geosynthetics February/March 2023 - 19
Geosynthetics February/March 2023 - 20
Geosynthetics February/March 2023 - 21
Geosynthetics February/March 2023 - 22
Geosynthetics February/March 2023 - 23
Geosynthetics February/March 2023 - 24
Geosynthetics February/March 2023 - 25
Geosynthetics February/March 2023 - 26
Geosynthetics February/March 2023 - 27
Geosynthetics February/March 2023 - 28
Geosynthetics February/March 2023 - 29
Geosynthetics February/March 2023 - 30
Geosynthetics February/March 2023 - 31
Geosynthetics February/March 2023 - 32
Geosynthetics February/March 2023 - 33
Geosynthetics February/March 2023 - 34
Geosynthetics February/March 2023 - 35
Geosynthetics February/March 2023 - 36
Geosynthetics February/March 2023 - 37
Geosynthetics February/March 2023 - 38
Geosynthetics February/March 2023 - 39
Geosynthetics February/March 2023 - 40
Geosynthetics February/March 2023 - 41
Geosynthetics February/March 2023 - 42
Geosynthetics February/March 2023 - 43
Geosynthetics February/March 2023 - 44
Geosynthetics February/March 2023 - Cover3
Geosynthetics February/March 2023 - Cover4
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-april-may-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-february-march-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-december-2023-january-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-october-november-2023
https://www.nxtbook.com/ata/geosynthetics/geoysynthetics-august-september-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-june-july-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-april-may-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-february-march-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-december-2022-january-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-october-november-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-august-september-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-june-july-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-april-may-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-february-march-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-december-2021-january-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-october-november-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-august-september-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-june-july-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-april-may-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-february-march-2021
https://www.nxtbook.com/ifai/geosynthetics/1220GS
https://www.nxtbook.com/ifai/geosynthetics/1020GS
https://www.nxtbook.com/ifai/geosynthetics/0820GS
https://www.nxtbook.com/ifai/geosynthetics/0620GS
https://www.nxtbook.com/ifai/geosynthetics/0420GS
https://www.nxtbook.com/ifai/geosynthetics/0220GS
https://www.nxtbook.com/ifai/geosynthetics/1219GS
https://www.nxtbook.com/ifai/geosynthetics/1019GS
https://www.nxtbook.com/ifai/geosynthetics/0819GS
https://www.nxtbook.com/ifai/geosynthetics/0619GS
https://www.nxtbook.com/ifai/geosynthetics/0419GS
https://www.nxtbook.com/ifai/geosynthetics/0219GS
https://www.nxtbook.com/ifai/geosynthetics/1218GS
https://www.nxtbook.com/ifai/geosynthetics/1018GS
https://www.nxtbook.com/ifai/geosynthetics/0818GS
https://www.nxtbook.com/ifai/geosynthetics/0618GS
https://www.nxtbook.com/ifai/geosynthetics/0418GS
https://www.nxtbook.com/ifai/geosynthetics/0218GS
https://www.nxtbookmedia.com