Protexia GPT drainage geocomposites for landfill and contaminated

Protexia GPT drainage
geocomposites for landfill
and contaminated land
Protexia GPT geocomposites comprise
longitudinal band drains incorporated
within, or on one side of, a geotextile
to provide low-cost area drainage and
protection to a membrane. The drains are
typically at 0.5m or 1.0m centres across
the roll width and continuously along the
entire length of the roll.
Bradgate LFS: beneath basal
liner to reduce pore water
pressure build-up
Philfawatkin LFS: above
side-slope liner for
leachate drainage
These products are used extensively to replace
expensive mineral layers where the requirement
is for sustained flow under high loadings.
THE BENEFITS
– High interface friction with soils for optimum
stability on slopes
– 6m wide for rapid installation
– Reliable drainage and protection with a
single product
– Minimum cost and maximum void space
– Stable on steep slopes
– UV protected (1% active carbon black)
– Chemically inert
– Simple jointing - no welds or tapes required
Skelton Grange LFS: membrane protection
and leachate drainage on side slopes
Erin LFS
Band drains at 1m centres across the roll width
Geotextile protector
Protexia GPT – integral band drains
Geotextile protector
Band drains at regular centres across the roll width
Protexia GPT3 – surface band drains
EXCELLENT INTERNAL AND EXTERNAL
STABILITY FOR USE ON SLOPES
Embedding and bonding the band drains within
the geotextile means that there is high internal
shear strength. Additionally, the geotextiles
used to manufacture the composites are
needlepunched. This process, together with the
short length of the fibres, creates a surface that
positively interacts with mineral layers.
Sutton LFS: to manage groundwater infiltration from
sand lenses in the subgrade beneath basal liner
WASTE
WASTE
Llandulas LFS: membrane protection and
leachate drainage on side slopes
Gowy LFS: providing additional drainage for
cover soils with high moisture content
WASTE
SIMPLE TO INSTALL
Installation of GPT products is both fast and
uncomplicated. Overlaps and joints are easy to
form. Roll lengths can be produced to match
slope length and with widths up to 6m, there is
further scope for minimising wastage as fewer
overlaps are required. The composite can be fed
into peripheral drainage trenches and wrapped
around pipes.
PROVIDING PUNCTURE RESISTANCE
FOR GEOMEMBRANES
The geotextiles used in the manufacture of the
GPT products can be specified to provide the
necessary level of puncture resistance - between
3kN and 40kN. Typical applications for Protexia
GPT drains include:
–
–
–
–
–
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Combined leachate collection and membrane
protection for landfill side slopes
Combined drainage and membrane
protection for landfill capping
Combined ground water drainage and
membrane protection below the membrane
of a landfill cell
Gas collection beneath capping layers to
landfills and contaminated land
Relief of pore water pressure around buried
structures, walls and abutments
Controlling run-off on caps
DURABLE
GPT products have a proven record in dealing
with gas leachate or water. They are made from
100% polypropylene and contain carbon black,
hence they are resistant to degradation by
exposure to UV radiation or leachate.
Gas
WASTE
Perched
leachate
Gas
WASTE
Perched
leachate
IMPROVING SLOPE STABILITY
BY CONTROLLING GROUND
WATER
USED AT
Georges Lane LFS
Beetley LFS
Bootham Lane LFS
Bramford LFS
Gowy LFS
WASTE
WASTE
Gas
Perched
leachate
WASTE
WASTE
Gas
Perched
leachate
WASTE
GAS & LEACHATE
MANAGEMENT
BENEATH THE CAP LINER
USED AT
Bran Sands LFS
Cleveland Energy LFS
Georges Lane LFS
Gyproc Kello
Morfa Tip
WASTE
Gas
Perched
leachate
WASTE
WASTE
WASTE
GROUND WATER SEEPAGE
RELIEF BENEATH THE
BASAL LINER
USED AT
Bilsthorpe LFS
Bradgate LFS
Sutton LFS
Winterton LFS
WASTE
WASTE
WASTE
Glacial deposits with
sand & silt lenses
Clay
Glacial deposits with
Clay
WASTEsand & silt lenses
Glacial deposits with
MEMBRANE PROTECTION
sand & silt lenses
WASTE
WASTE
Clay
WASTE
Clay
Glacial deposits with
WASTE sand & silt lenses
WASTE
Clay
GROUND WATER SEEPAGE
RELIEF BENEATH A CLAY
BACKWALL
USED AT
Danes Moss LFS
Erin LFS
Whitehead LFS
Glacial deposits with
sand & silt lenses
& LEACHATE DRAINAGE
ON SIDE SLOPES
USED AT
Arpley LFS, Auchinlea LFS
Drummond Moor LFS
Erin LFS
Llandulas LFS
Nether Delachy LFS
Oatslie LFS
Skelton Grange LFS
In addition to landfill and contaminated land applications,
GEOfabrics’ products are also used:
As filter/separators beneath armour
defences along coastlines and rivers
Visit www.geofabrics.com to view and
download product data sheets, case studies,
model specifications, installation notes
and other relevant documents for these
applications. Samples can be provided on
request.
Beneath railway track ballast to
extend the maintenance interval
Apart from manufacturing geotextiles and
GPT drains, GEOfabrics also produces
a diverse range of geocomposites based
on components that include geocuspates,
geogrids, geonets and geomembranes.
These can be manufactured to match
the performance requirements of an
application.
As high visibility marker/separators
To control gas migration around
structures
GEOfabrics Limited
Skelton Grange Road
Stourton
Leeds LS10 1RD
United Kingdom
Tel: 0113 202 5678
Fax: 0113 202 5655
Email: [email protected]
Web: www.geofabrics.com