Geosynthetics June/July 2022 - 8

Q &
LANDFILL TRENCHES
WITH GEOCOMPOSITES
THE GEOSYNTHETIC
INSTITUTE ANSWERS
YOUR QUESTIONS
gmatechline@ifai.com
View past questions and answers at
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gma-techline. Email gmatechline@
ifai.com anytime for fast, free, direct
technical answers.
Q: I am wondering if you know of or can
point me in the right direction in regard to
determining viability of leachate disposal
via spraying back onto the active face of a
landfill. I have a landfill that has a few issues,
and while, from a practical sense, we have
had some success with this approach, the
U.S. Environmental Protection Agency (EPA)
wants some science to justify it. Do you know
of any relevant white papers or research?
A: The best reference I can suggest is
Reinhart and Townsend (1997). They
describe several ways to reintroduce
leachate back into a municipal solid waste
(MSW) landfill for the purpose of reaching
field capacity. Unfortunately, spraying
leachate back onto the active face may lead
to problems (i.e., odors, vehicle traction
issues, congestion at the face, etc.). I
believe that they found trenches lined with
geocomposite drainage materials worked
very well over time in this application.
Reinhart, D. R., and Townsend, T. G. (1997). Landfill
bioreactor design and operation, CRC Press, Boca
Raton, Fla.
A
GMA TECHLINE
MODERATED BY
George R. Koerner
ASTM STANDARD FOR FORMED
DIMPLE BOARD
Q: Which American Society for Testing
and Materials (ASTM) test would you
recommend for tear evaluation of formed
dimple board? I am aware of D1004, but
can this test be performed on formed
dimple board?
A: ASTM has five tear methods commonly
used in geosynthetics. They are listed below.
1. ASTM D751 Trouser Tear (4 × 8 inch
[100 × 200 mm] specimen)
2. ASTM D1004 Graves 90°
3. ASTM D1424 or ASTM D1922
Elmendorf Tear
4. ASTM D4533 Trapezoidal Tear
5. ASTM D5884 Trouser Tear (8 × 8 inch
[200 × 200 mm] specimen)
For a formed dimple board, I would
recommend ASTM D5884. It has the largest
specimen size of 8 × 8 inches (200 × 200
mm) and is the most repeatable test of
the bunch.
8
Geosynthetics | June July 2022
http://geosynthetics.ifai.com/programs/

Geosynthetics June/July 2022

Table of Contents for the Digital Edition of Geosynthetics June/July 2022

Geosynthetics June/July 2022 - Cover1
Geosynthetics June/July 2022 - Cover2
Geosynthetics June/July 2022 - 1
Geosynthetics June/July 2022 - 2
Geosynthetics June/July 2022 - 3
Geosynthetics June/July 2022 - 4
Geosynthetics June/July 2022 - 5
Geosynthetics June/July 2022 - 6
Geosynthetics June/July 2022 - 7
Geosynthetics June/July 2022 - 8
Geosynthetics June/July 2022 - 9
Geosynthetics June/July 2022 - 10
Geosynthetics June/July 2022 - 11
Geosynthetics June/July 2022 - 12
Geosynthetics June/July 2022 - 13
Geosynthetics June/July 2022 - 14
Geosynthetics June/July 2022 - 15
Geosynthetics June/July 2022 - 16
Geosynthetics June/July 2022 - 17
Geosynthetics June/July 2022 - 18
Geosynthetics June/July 2022 - 19
Geosynthetics June/July 2022 - 20
Geosynthetics June/July 2022 - 21
Geosynthetics June/July 2022 - 22
Geosynthetics June/July 2022 - 23
Geosynthetics June/July 2022 - 24
Geosynthetics June/July 2022 - 25
Geosynthetics June/July 2022 - 26
Geosynthetics June/July 2022 - 27
Geosynthetics June/July 2022 - 28
Geosynthetics June/July 2022 - 29
Geosynthetics June/July 2022 - 30
Geosynthetics June/July 2022 - 31
Geosynthetics June/July 2022 - 32
Geosynthetics June/July 2022 - 33
Geosynthetics June/July 2022 - 34
Geosynthetics June/July 2022 - 35
Geosynthetics June/July 2022 - 36
Geosynthetics June/July 2022 - 37
Geosynthetics June/July 2022 - 38
Geosynthetics June/July 2022 - 39
Geosynthetics June/July 2022 - 40
Geosynthetics June/July 2022 - 41
Geosynthetics June/July 2022 - 42
Geosynthetics June/July 2022 - 43
Geosynthetics June/July 2022 - 44
Geosynthetics June/July 2022 - Cover3
Geosynthetics June/July 2022 - Cover4
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https://www.nxtbook.com/ata/geosynthetics/geosynthetics-february-march-2024
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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
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https://www.nxtbook.com/ata/geosynthetics/geosynthetics-october-november-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-august-september-2022
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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
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https://www.nxtbook.com/ifai/geosynthetics/0620GS
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