43 results about "Geocomposite" patented technology

Geocomposite articles that can provide a barrier against high conductivity water e.g., ocean water, are described and their method of manufacture, for waterproofing surfaces that contact high conductivity water. The geocomposite article mat includes a woven or non-woven geotextile sheet or mat containing a powdered or granular partially cross-linked acrylamide/acrylate/acrylic acid copolymer across its entire major surface(s). The powdered or granular copolymer has an unexpectedly high free-swell when hydrated with High Conductivity water, such as ocean water. A liquid-impermeable cover sheet is adhered to the upper major surfaces of the filled copolymer-carrying geotextile to provide a primary high conductivity water barrier layer that, if ruptured, is sealed by the swell of an underlying layer of water-insoluble, partially cross-linked acrylamide/acrylic acid copolymer.

A soil drainage system which comprises a core pipe (10) having a plurality of perforations (12). A geocomposite core jacket (14) having a plurality of perforations (16) surrounds the core pipe (10). A geotextile filter fabric (18) wraps around and surrounds the geocomposite core jacket (14). The geotextile filter fabric (18) is permeable to water (20) or other fluids and filters out soil particles (22), or other particles, whereby the water (20) readily permeates the geotextile filter fabric (18), the geocomposite core jacket (14) and the core pipe (10) to provide for a rapid and improved flow of the water (20) and subsequent drainage of the water (20) through the core pipe (10).

A geonet having a length substantially greater than its width and including no more than first and second layers of strands. A first plurality of substantially parallel strands extends in the lengthwise direction and defines the first layer of strands, and a second plurality of substantially parallel strands is disposed on top of, and at an angle relative to, the first plurality of strands and defines the second layer of strands. The first and second plurality of strands are substantially incompressible and secured to one another at crossover locations. Geocomposites include geotextile bonded to at least one side of the geonet. The geonets/geocomposites are laid in geotechnical construction sites in the direction of expected drainage flow.

A geocomposite for use in a landfill, including a geonet and a geotextile bonded to at least one side of the geonet. The geonet includes a first plurality of substantially parallel strands, and a second plurality of substantially parallel strands disposed on top of the first plurality of strands, the second plurality of strands being at an angle relative to the first plurality of strands. The first and second plurality of strands are substantially incompressible and secured to one another at crossover locations, and are substantially round in cross-section.

The invention relates to a geotechnical composite drainage material filter membrane horizontal seepage clogging discounting test method. The method comprises the following processes: filter membrane sample manufacturing comprises taking out geotechnical composite drainage material non-disturbance sample in clogging from a soil layer, and manufacturing a sample containing deposited clay on the surface layer of the filter membrane according to a specific sample preparation method, wherein the discounting of the geotechnical composite drainage material filter membrane horizontal seepage coefficient caused by sedimentation clogging after being used in the soil layer can be really simulated through the sample preparation; and meanwhile, a set of horizontal seepage coefficient test device is researched, the device can be used for simulating and testing the horizontal seepage coefficient of the filter membrane in different hydraulic gradient and different lateral pressure coefficient conditions, the sample prepared by using the above method and the unused filter membrane sample are used for performing contrast test to obtain a filter membrane clogging discounting index. The invention firstly provides the method and corresponding device for quantitatively testing the geotechnical composite drainage material filter membrane horizontal seepage clogging discounting, the device is simple, the operation is simple and easy to implement, and the measurement precision is high; the device can be used for testing the geotechnical composite drainage material filter membrane horizontal seepage coefficient.

A geocomposite for positioning under a geomembrane comprising at least one first geotextile covered by at least one second geotextile at least one electrically conductive textile being positioned between the second geotextile and the first geotextile. The conductive textile having a module for connecting to a phase of an electric generator. The geocomposite being in the form of one or several strips at the edges of which the second geotextile, the first geotextile and the electrically conductive textile are separate from each other, the geocomposite comprising perforated ringed mini-drains positioned parallel with each other on the first geotextile and covered with the second geotextile.

The present invention relates generally to geo-textiles having an increased resistance to the negative effects of shear forces in installations or layered structures which can be adapted and arranged to utilize geo-textiles. Geo-textiles of the invention comprise at least one high-friction compound, such as one or more high-friction polymers, and methods for making and utilizing them. The high-friction characteristics of components of the invention provide increased resistance to the negative effects of shear forces in layered installations which employ them. Geo-textiles of the invention may have one or more high-friction compounds provided on either or both surfaces. Geo-textiles according to the invention are particularly useful in sloped installations where at least a portion of the layered structure is at a slope angle of greater than 4 degrees, and can be interposed between one or more of geo-membranes, geo-grids, geo-cells, geocomposite laminates and conventional geo-textiles.

A hurricane panel configured to cover a building opening that is made of a geocomposite having an impermeable core and surrounded by both sides with batting, and anchoring means for attachment to a building.

The present invention concerns a soil-treatment method and system, comprising at least one electricity generator (10) and at least two electrodes (11, 12), as well as at least one pumping device (20), characterised in that the system comprises at least one geocomposite (2) that contains at least one portion of at least one of said electrodes (11, 12) and which includes at least one filtering layer (21) and/or at least one draining layer (22), and in that at least one portion of at least one of said electrodes (11, 12) comprises carbon.

The present invention discloses an extrusion casting machine calendering apparatus, which comprises an extruder, a die, a calendering rack, a base, a calendering roller set, a glue roller and a water tank, wherein the calendering roller set and the glue roller are arranged on the calendering rack, the water groove is arranged below the calendering roller set, the die is arranged above the calendering roller set and is connected with the extruder, the calendering rack is arranged above the base, and a stretching device is arranged between the base and the calendering rack. With the equipment of the present invention, the produced geomembrane sheet thickness range is wide, the geomembrane and the geotechnological composite material can be concurrently produced, and the defect that the membrane blowing method can not produce the composite material is overcome.

The invention relates to a geosynthetic material contact surface friction strength test method, which is characterized by employing a test device to acquire geosynthetic material contact surface friction strength parameters. The device comprises a reaction frame (1), a loading frame (2), a first servo motor (3), a second servo motor (4), a sample carrying platform (5), an upper shear box (6), a lower shear box (7), a rail car (8), a horizontal slide rail (17), a horizontal loading shaft (22), and a vertical loading shaft (25), etc. Through the interaction of a geosynthetic material and a geologic body under the action of different vertical loads, normal stress and shear stress on an oblique section can be obtained, thereby acquiring friction strength parameters. The method provided by the invention can be used for acquiring the friction strength parameters between various geosynthetic materials including geotechnical fabrics, geomembranes, geotechnical cloth, geogrids, geotechnical pads, geotechnical special materials, geocomposites and the like in civil engineering or geological engineering and geologic bodies.

The invention provides a thermoplastic polyolefin earthwork composite material and a preparation method thereof and belongs to the technical field of water-power engineering. The thermoplastic polyolefin earthwork composite material is used for solving the problem that the present impermeable material cannot be applied to the water-power engineering for a long time. The thermoplastic polyolefin earthwork composite material includes a thermoplastic polyolefin layer and a geo-fabric layer which are compounded with each other. The composite material has high flexibility, extensibility and durability of rubbers and excellent fusing processing characteristics of thermoplastic plastics, contains no plasticizer, has excellent ultraviolet light aging resistance, high anti-puncturing strength, high anti-burst strength, high hydrostatic pressure resistance and excellent thermal welding performance, is capable of bearing water pressure impact 200m or above, can be directly exposed and applied to the newly constructed and repaired hydraulic and hydro-power engineering for preventing seepage, such as dams, reservoirs, embankments, cofferdams, water channels, tunnels and nuclear power plants, and has the service life as same as the service life of the constructions.

Void-maintaining laminates comprising fuzzy woven or fuzzy membrane layers are provided. Laminates of the present invention comprise at least one sheet-like core element, typically comprising void spaces or channels and, bonded thereto, at least one layer of fuzzy woven composite for use in geotechnical applications. The superior adhesion or bonding of the respective layers to one another, and its contribution to the structural integrity of void spaces or channels, enables the construction and positioning of drainage composites having the desirable characteristics of high permittivity and high transmissivity. Numerous embodiments of the invention are possible. Fuzzy geocomposites of the invention can be used, for example, underneath buildings, foundations, roadways and other paved structures, or in landfills or other types of geotechnical installations to replace or complement conventional drainage materials such as sand, stone and gravel. Methods for making the fuzzy geocomposites are also provided.

The invention belongs to the technical field of geosynthetic testing, and relates to a vertical permeability clogging and reduction testing device of a geocomposite drainage material filter membrane. In the processes of the method, a filter membrane test sample contains filter membrane surface depositing soil and is made by taking a geocomposite drainage material that clogging occurs after use out of a soil layer in accordance with a preset sample making method. The test sample is subjected to a contrast test with a filter membrane test sample which is not used by virtue of a researched vertical permeability coefficient testing device (the device can be used for testing filter membrane vertical permeability coefficients under conditions of different hydraulic gradients and different lateral pressure coefficients), so as to obtain filter membrane clogging and reduction indexes. The invention provides a method and a corresponding device for the quantitative test of clogging and reduction of the geocomposite drainage material filter membrane for the first time; and the device has the advantages of being simple, easy and simple in operation and high in measurement precision, and is suitable for testing the vertical permeability coefficient of a geocomposite composite material.

Synthetic geomaterials, such as geotextiles, geocomposites or geogrids (woven, knitted or of monolithic strips), characterized in that the synthetic geomaterial comprises at least one transponder applied thereon for storing and for calling up data related to product and/or state and condition and/or project.

The invention discloses a novel plastic geocomposite film including an anti-seepage plastic film layer. One side face of the anti-seepage plastic film is provided with a tensile reinforcing layer; the tensile reinforcing layer comprises warp yarns and weft yarns, the warp yarns and the weft yarns are all high-strength blended yarns, and the high-strength blended yarns are each formed by compositing 50-60 cotton fibers and 30-40 carbon fibers; the outer side face of the tensile reinforcing layer is provided with a rough structural layer, and the rough structural layer comprises base cloth and a plurality of hard components distributed on the outer side face of the base cloth. According to the above method, the plastic geocomposite film has simple and reasonable structure, allows the side face used for paving to have higher roughness, has good stability after paving, does not generate a slippage phenomenon, and especially can more reflect the advantages when being paved on a slope.