HIGH STRENGTH WOVEN GEOTEXTILES
Syntex high strength woven geotextiles polypropylene (PP) are manufactured in grades from 35 kN to 105 kN and High Strength polyester (PET) from 150 kN to 1250 kN.
Advantages:
High strength geotextiles have the advantage over conventional geotextiles in when they are subjected to load they can reach full tensile strength without undergoing the initial elongation associated with the straightening of the woven yarns. This allows immediate soil to geotextile load transfer. These geotextiles provide excellent creep performance and high tensile modulus.
These geotextiles provide maximum performance for weak subgrades and offer a combination of high filtration, high strength and separation. A high frictional surface between the basecourse and the road is created with a high strength at low strain resulting in low vertical deformation. High strength woven geotextile has excellent filtration characteristics allowing for reductions in saturated fill and subgrades for soil reinforcement in applications including embankment stabilisation, steepened slopes, retaining walls, lagoon closures and landfill lining systems.
Applications:
- Steepened Slopes: The geotextile is placed in layers between the soil to provide tensile strength to the slope and replace geogrids and earth anchors as a cost effective alternative by using existing fill, reducing the need to import rock.
- Retaining Walls: To maximise use of available land it is often necessary to build vertical retaining walls. The choice of materials can be a rigid cast-in-place concrete structure, pre-cast panels, modular blocks, etc. Syntex high strength geotextiles provide soil retention on face wrapped walls and slip resistance in backfill soils. They provide strength plus prevent erosion behind the wall.
- Earth Reinforcement: Construction over soft foundation soil (with a CBR of less than 1) the choices become restrictive due to excavation costs and time factors. Syntex high strength geotextiles were designed with this in mind. They provide a firm and permeable platform to strengthen the ground. This is a considerable cost saving solution to a common problem in construction. Syntex high strength vastly increases the tensile strengths of the soils, thus increasing the factor of safety to acceptable levels against sliding, lateral spreading, ground stability and bearing capacity failures. The geotextile provides high strength and maintains separation from the granular fill above while allowing drainage.
- Landfills and Lagoon Closures: Due to difficulty in building new landfills the current practice is to construct new cells on top or next to existing closed landfills. High strength geotextiles allows the landfill capacity to be expanded by preserving the integrity of the new lining system. They reduce the differential settlement caused by biodegradation under the weight of the new waste. High strength wovens offer greater savings over double layers of uni-axial geogrids. Lagoons containing industrial wastes often close before settlement which require the installation of an impermeable cap over the thick wastes. High strength geotextile covers over the lagoon provides several advantages including separation, stabilisation and reinforcement, both of which are not adequately performed by geogrids alone.