Geosynthetics August/September 2020 - 13

GEOTEXTILES AS REINFORCEMENT
Q: I read a research paper on strengthening
of clay beds by providing granular piles
reinforced with horizontal geotextile. But
there is no mention of the mechanism of
geotextile, which decreases settlement.
Please help me in this regard.
A: The geotextiles over granular piles act as
reinforcement. The geotextile and geogrids
are shaped like a catenary spanning the
columns and supporting the soil above.
One can search load transfer platform, basal
reinforcement or geosynthetic encased
column for more. In regard to specific
references on the subject, I would search
Carlsson 1987, Kempfer 2004 or Collin 2005.
A key concern with the technology is the
stress concentration and the pile/column
caps. I would suggest you consider a rounded
precast pile cap on rigid piles or shafts. Such
caps are not necessary on granular piles,
which do not have defined boundaries.

SEAMING DISSIMILAR
GEOMEMBRANES
Q: I kindly request your technical support
in the questions below:
A nonpolyethylene geomembrane was used
in phase 1 of the tailings dam waterproofing
system of a gold mine. For the expansion
(phase 2), the use of a high-density
polyethylene (HDPE) geomembrane is being
evaluated. How can the HDPE geomembrane
join the bituminous geomembrane from the
previous phase? What is the recommended
procedure in cases like this?
A: The seaming of dissimilar geomembranes
is typically achieved with a stability berm
that delineates the two projects and
geosynthetic clay liner (GCL) between the two
geomembranes. One may need to run stability
analysis if this connection is on a side slope. G

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Geosynthetics August/September 2020

Table of Contents for the Digital Edition of Geosynthetics August/September 2020

Geosynthetics August/September 2020 - Cover1
Geosynthetics August/September 2020 - Cover2
Geosynthetics August/September 2020 - 1
Geosynthetics August/September 2020 - 2
Geosynthetics August/September 2020 - 3
Geosynthetics August/September 2020 - 4
Geosynthetics August/September 2020 - 5
Geosynthetics August/September 2020 - 6
Geosynthetics August/September 2020 - 7
Geosynthetics August/September 2020 - 8
Geosynthetics August/September 2020 - 9
Geosynthetics August/September 2020 - 10
Geosynthetics August/September 2020 - 11
Geosynthetics August/September 2020 - 12
Geosynthetics August/September 2020 - 13
Geosynthetics August/September 2020 - 14
Geosynthetics August/September 2020 - 15
Geosynthetics August/September 2020 - 16
Geosynthetics August/September 2020 - 17
Geosynthetics August/September 2020 - 18
Geosynthetics August/September 2020 - 19
Geosynthetics August/September 2020 - 20
Geosynthetics August/September 2020 - 21
Geosynthetics August/September 2020 - 22
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Geosynthetics August/September 2020 - 24
Geosynthetics August/September 2020 - 25
Geosynthetics August/September 2020 - 26
Geosynthetics August/September 2020 - 27
Geosynthetics August/September 2020 - 28
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Geosynthetics August/September 2020 - 30
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Geosynthetics August/September 2020 - 35
Geosynthetics August/September 2020 - 36
Geosynthetics August/September 2020 - 37
Geosynthetics August/September 2020 - 38
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Geosynthetics August/September 2020 - 40
Geosynthetics August/September 2020 - 41
Geosynthetics August/September 2020 - 42
Geosynthetics August/September 2020 - 43
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Geosynthetics August/September 2020 - 45
Geosynthetics August/September 2020 - 46
Geosynthetics August/September 2020 - 47
Geosynthetics August/September 2020 - 48
Geosynthetics August/September 2020 - Cover3
Geosynthetics August/September 2020 - Cover4
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