Geosynthetics June/July 2021 - 30

Design of reinforcement geosynthetics in landfill piggyback expansion
Roll placement
The PVA reinforcement geosynthetic is
unrolled on a base that has been graded
and compacted (Figure 7).
The product is placed with the woven
geotextile on top to protect the high-tenacity
yarns during the backfilling. Two layers of
geosynthetics were installed, perpendicular
to each other, with a soil layer in between.
Overlaps
Side-by-side (longitudinal) connections
are achieved with a minimum overlap of
12 inches (300 mm) following the direction
of the backfill placement.
FIGURE 7 Installation of reinforcement geosynthetic
Bottom ash material placement
The incinerator bottom ash material is
free of foreign matter that could damage
the geosynthetic. A 1-foot (300-mm)
thick layer has been placed between the
two geosynthetic layers to improve the
interface friction properties (Figure 8).
Monitoring
The implementation of a monitoring
system to record the settlements of the
reinforcement geosynthetic aims to
validate and refine the calculation and
assumptions considered in the geotechnical
model and to better understand the
reality and dynamics of the settlements.
The settlement-monitoring system
includes hydraulic settlement gauges
connected to a reference tank. They are
arranged as required, in line every 98 feet
(30 m). Each gauge has been placed on
the reinforcement geosynthetic on a rectangular
plate and protected with sand to
limit unexpected settlements (Figure 9).
The gauges are connected to a referFIGURE
8 Placement of bottom ash soil over geosynthetic
30
Geosynthetics | June July 2021
ence tank, and a data logger is mounted
on a concrete base outside the cell. The
concrete base must not settle and is under
a topographical survey. The data acquisition
is made manually by connecting a
reading device to the data logger.

Geosynthetics June/July 2021

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

Geosynthetics June/July 2021 - Cover1
Geosynthetics June/July 2021 - Cover2
Geosynthetics June/July 2021 - 1
Geosynthetics June/July 2021 - 2
Geosynthetics June/July 2021 - 3
Geosynthetics June/July 2021 - 4
Geosynthetics June/July 2021 - 5
Geosynthetics June/July 2021 - 6
Geosynthetics June/July 2021 - 7
Geosynthetics June/July 2021 - 8
Geosynthetics June/July 2021 - 9
Geosynthetics June/July 2021 - 10
Geosynthetics June/July 2021 - 11
Geosynthetics June/July 2021 - 12
Geosynthetics June/July 2021 - 13
Geosynthetics June/July 2021 - 14
Geosynthetics June/July 2021 - 15
Geosynthetics June/July 2021 - 16
Geosynthetics June/July 2021 - 17
Geosynthetics June/July 2021 - 18
Geosynthetics June/July 2021 - 19
Geosynthetics June/July 2021 - 20
Geosynthetics June/July 2021 - 21
Geosynthetics June/July 2021 - 22
Geosynthetics June/July 2021 - 23
Geosynthetics June/July 2021 - 24
Geosynthetics June/July 2021 - 25
Geosynthetics June/July 2021 - 26
Geosynthetics June/July 2021 - 27
Geosynthetics June/July 2021 - 28
Geosynthetics June/July 2021 - 29
Geosynthetics June/July 2021 - 30
Geosynthetics June/July 2021 - 31
Geosynthetics June/July 2021 - 32
Geosynthetics June/July 2021 - 33
Geosynthetics June/July 2021 - 34
Geosynthetics June/July 2021 - 35
Geosynthetics June/July 2021 - 36
Geosynthetics June/July 2021 - 37
Geosynthetics June/July 2021 - 38
Geosynthetics June/July 2021 - 39
Geosynthetics June/July 2021 - 40
Geosynthetics June/July 2021 - 41
Geosynthetics June/July 2021 - 42
Geosynthetics June/July 2021 - 43
Geosynthetics June/July 2021 - 44
Geosynthetics June/July 2021 - Cover3
Geosynthetics June/July 2021 - Cover4
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https://www.nxtbook.com/ata/geosynthetics/geosynthetics-october-november-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-july-august-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-case-studies-guide-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-april-may-2024
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
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
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https://www.nxtbook.com/ifai/geosynthetics/0818GS
https://www.nxtbook.com/ifai/geosynthetics/0618GS
https://www.nxtbook.com/ifai/geosynthetics/0418GS
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