The management of waste and contaminants has become a priority to society and to us at GAST. Industrial waste, urban waste, hazardous or slightly radioactive materials, contaminated soil, sludge and incinerator ashes, all of these can now be safely contained.
Landfill cells are equipped with a complex, effective impervious system made up of different layers of geosynthetic materials, including geomembranes which has the primary function of preventing the migration of contaminated leachate to surrounding soil.
Geomembranes are manufactured from fairly thin continuous polymeric sheets. They are formed by using a low permeability synthetic membrane liner or barrier in conjunction with any form of geotechnical engineering materials, which allows it to control fluid movement in a man-made project, structure or system.
Continually exposed, in whole or part, the geomembrane must be capable of withstanding ultraviolet rays. Installed in conditions that may be challenging including wind, dust, harsh nature, rough, uneven or unstable terrain, GAST ensures the installed geomembranes are able to withstand potential perforation and retain the beneficial properties for which it was selected. GAST is renowned for providing some of the highest quality geomembranes obtainable today, with GAST’s logistical support, we are able to tackle some of the largest projects on earth in some of the most inhospitable areas.
GAST has a wide variety of products from 500 micron to 5 mm thickness Flat Die or Blown Film in a variety of specifications from Smooth, Mono Textured, Double Textured including a wide selection of asperity heights.
SELECT ONLY THE BEST, SELECT GAST GM PRODUCTS
GAST provides & installs a wide variety of different Geotextiles to be used in a multitude of different applications from stabilisation, reinforcement, separation medium, drainage & protection.
You'll find GAST Geotextiles almost everywhere in everyday life from roads, tailings, dams, landfill sites, shore lines and many more. Geotextiles play an integral part of various construction & civil applications due to it's versatility and robustness and GAST is able to provide non-woven, woven in polyester, polypropylene or nylon geotextiles in various thicknesses.
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Geogrids are mainly utilised as a reinforced material to assist in stabilisation & separation for various applications from roads, slopes, railways, bridges & many more.
GAST offers a wide variety of different class, thickness and structured Geogrids enabling us to assist you with a wide selection of project needs and budget limitations should you require to reduce base thickness or increase bearing capacities.
LET GAST STABILISE YOUR PROJECT
GAST Geonets provide you, our client, a wide selection of products from composites in drainage to three dimensional high density polyethylene structures enabling you to make more cost effective designs or improve your current system.
GAST Geonets are mainly utilised in the Civil, Mining, Construction and Road industry primarily as a filtration medium in the form of a composite or compression resistance, is a critical factor like slopes in a leachate collection pond.
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GEOSYNTHETIC CLAY LINERS (GCL)
GAST GCL's are a composite between a Geotextile and Bentonite to replace expensive thick layers of compacted clay.
Not only is this much more cost effective but also provides superior performance characteristics in comparison to natural compacted clay, making GAST GCL's a versatile hydraulic barrier with self healing properties due to the bentonite.
WHY USE CLAY WHEN YOU HAVE GAST GCL
GAST Geocomposites are factory modified and combined products that could include Geotextiles, Geonets, Geogrids and Geomembranes depending on the application and requirements of our clients.
A geocomposite can be used to improve drainage requirements, erosion control, leachate collection and/or other leak detection solutions.
LET US FIND YOU THAT IDEAL PRODUCT FOR YOUR APPLICATION
Geocells are widely used in a multitude of industries as an effective stabilisation medium to contain soil, gravel or any other fill material. You will find a GAST Geocell in various road construction, drainage construction elements and/or railway applications.
Geocells are mostly manufactured with HDPE (High Density Polyethylene) and/or woven polypropylene textiles assisting various clients in stabilising their substrate and provide efficient drainage.
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LEAK LOCATION / DETECTION
As a service offering during our Geosynthetic installations or as a standalone service, GAST provides in-depth leak location / leak detection services for the wider Geosynthetic industry. Utilising state of the art equipment from specialised drones with LIDAR and/or geo-galvonometric testing, electronic water lance, dipole and Faraday brushed spark testing.
GAST also offers independent third party Quality Assurance / Quality Control including assistance from our own laboratories. This ensures effective & accurate turnaround times during a project.