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Rock PEC is a geocomposite consisting of continuous filament non woven, reinforced by high tenacity polyester yarns. Rock PEC is available in a wide range of tensile strengths, unidirectional and bidirectional. Special types can be manufactured on request.
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TenCate Polyfelt Polymat erosion control mats (ECM) are monofilament Geomats made from polypropylene, with or without Geogrid reinforcement. The structure with its extremely high voids content reinforces the upper 1 to 2 cm of the soil, thereby preventing surface erosion on slopes and offering permanent support to topsoil and vegetation.
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Enkadrain Wide
Cordrain is an efficient, economical vertical drainage of walls and other subground structures
Cordrain has been specifically designed to reduce hydrostatic pressure behind structures such as retaining walls and bridge abutments. It is also ideal for draining foundations and basements, reducing the likelihood of structural damage caused by foundation movements in expansive soils. The impermeable core provides the added benefit of assisting in the waterproofing of structures which may reduce the functional requirement of a tanking membrane.
Cordrain is supplied in 1.2m x 25m rolls which weigh only 30kg making them well suited for installations on steep building sites where traditional drainage gravels provide logistic problems for the installer resulting in higher installation costs.
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MacMat-R
MacMat®R is a three-dimensional geomat that can be applied as an erosion control mat for sloped embankments, channel linings and soil-veneer applications. It was developed to meet the need for an erosion control material which was both strong and environmentally acceptable. MacMat®R is manufactured with a double twist steel wire mesh reinforcement inside the geomat, to provide tensile strength and a stronger form of erosion protection to better ensure the stability of the topsoil on roadway embankments, channels linings and other areas susceptible to erosion damages.
MacMat® R has several advantages:
The continuity of the lining is easily achieved by lacing the edges together with binding wire or metal rings without overlapping and minimising the wastage.
In many standard situations a simple fold into the top of the slope of an anchor trench could be used, being wooden stakes or other anchors sufficient to anchor the wire mesh to the ground.The double twist wire mesh protects the geomat from any potential damage limiting those to a single mesh opening.
The steel reinforcement provides high stiffness to the geocomposite and an uniform adherence to the subsoil providing better protection of the covered surface.
It may be easily fixed to any thicker lining or bottom protection (gabions, mattresses, etc.) providing a better and continuous protection and anchorage where the erosion is usually more critical or the stresses are concentrated.
The combined use of a geocomposite reduces to 50% the installation costs over a double layer system.
Research
To determine MacMat®R performances under various hydraulic conditions, a series of tests have been carried at Utah State University (USA) to evaluate the anti-erosion capability of the geocomposite during varying flow conditions. The allowable shear stresses on the geoomposite have then been evaluated. The diagram to the right reports the results of this research about vegetated (red) and unvegetated mats (green).
MacMat® R is supplied in 2m x 25m rolls
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Steep slopes, river banks, ditches, spillways and other exposed areas are often prone to damage caused by erosion due to wind or water.
Terram Erocell can help to prevent erosion by confining soils and aggregates to within the cell structure. Varying degrees of protection can be afforded by selecting alternative in-fill materials. Seeded topsoil provides protection for less exposed areas. Protection may be increased by introducing vegetation such as small shrubs. For greater protection, a granular in-fill can be used in certain circumstances. Appropiate in-fills can also be chosen to give a desired surface appearance. The standard Terram Cellular System for erosion protection, Terram Erocell, is normally suitable for use on slopes with an incline of up to 45 degrees (1:1 slopes).
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Preventing soil erosion, carrying out development works and landscaping
with topsoil often involve the use of ridged geosynthetic structures.
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