226results about "Geotextiles" patented technology

A woven silt fence fabric includes two or more distinctly different colors of warp yarns in the machine direction. The woven silt fence fabric includes a first woven fabric portion to be installed in the ground having a first color that is distinctly different from a second color of a second woven fabric portion to be installed and remain exposed above the ground.

A geotextile fabric includes a first weft yarn woven in a weft direction and a first warp yarn and a second warp yarn woven in a warp direction, the first warp yarn being a wicking yarn, and the second warp yarn being a wicking yarn or a non-wicking yarn, the first warp yarn forming a first loop that is woven through and extends from a first face of the woven geosynthetic fabric and across at least two of the first weft yarns to form a first gap between the first loop and first the face of the woven geosynthetic fabric.

The invention relates to the field of roadbed engineering design, in particular to SiO2 aerogel composite geotechnical cloth for a road and a manufacturing method. The composite geotechnical cloth comprises a geotechnical cloth base layer and SiO2 aerogel layers, and the SiO2 aerogel layers are located on the upper face and the lower face or the single face of the geotechnical cloth base layer. The aerogel and the geotechnical cloth are combined, the novel aerogel composite geotechnical cloth can be formed, the material not only has the isolation and reinforcement functions of traditional geotechnical cloth, but also has the functions of heat preservation, heat insulation and seepage prevention, the structural integrity and the mechanical property of the aerogel can be spontaneously recovered in the repair cycle through the self-repair function of the aerogel, and the aerogel composite geotechnical cloth can be used as a composite material. The service life can be prolonged and the maintenance cost is reduced.

The invention relates to a geomaterial sheet comprising a first organic structural material and a second structural material, different from the first, which are connected to the first structural material to form a planar composite material sheet extending in two mutually perpendicular directions. The invention is characterized in that the first structural material and the second structural material are organic materials, the first structural material exhibits a first biodegradability to a certain extent, and the second structural material exhibits a second biodegradability that differs from the first biodegradability, in particular being lower than the first biodegradability.

Permafrost thawing prevention may involve deploying a cooling geotextile onto a permafrost soil. The geotextile may include a biomass scaffold comprising natural plant-based fibers. The geotextile may further include a cellulose layer comprising cellulose fibers laminated onto the biomass scaffold such that the cellulose fibers are physically entangled with the plant-based fibers. The geotextile may further include a hydrophobic and biodegradable coating which defines at least one surface of the geotextile. The geotextile may be optically opaque, exhibits high solar reflectivity, and maintains high mid-infrared emissivity to enable passive radiative cooling.

A woven silt fence fabric includes two or more different warp yarns having different cross-sectional shapes in the machine direction and / or two or more different fill yarns having different cross-sectional shapes in the cross-machine / transverse direction. The woven silt fence fabric includes one or more marker yarns having a different color than adjacent yarn(s) to thereby identify one or more of a grade line, install line, monitor line, and / or high visibility line.

The invention discloses an anti-scouring and reinforcing method for a silt roadbed slope, and belongs to the technical field of roadbed protection. In order to solve the technical problems that an existing silty soil side slope is scoured and damaged due to high permeability, and a traditional reinforcement measure is difficult to consider structural stability and ecological restoration at the same time, trapezoidal grooves are excavated to be filled with graded quartz sand, an alkaline silicate curing agent is sprayed to form an anti-seepage layer, and a mechanical framework is constructed in combination with a pre-tensioning geogrid and a gravel mixed layer; a drainage pipe wrapped with a filter material is arranged to be communicated with a slope drainage system, and finally a vegetation concrete layer is sprayed to plant drought-enduring plants. The anti-seepage layer and the drainage system synergistically reduce the scour risk, the geogrid and the gravel layer improve the shear strength, the plant root system penetrates through the grid to achieve surface layer anchoring, meanwhile, the vegetation concrete layer is adopted to restore ecology, the structure is suitable for protection engineering of silty soil roadbed slopes of roads, railways and the like, and structural stability and ecological sustainability are both considered.

The invention discloses a composite temperature-control drainage geotextile, and relates to the technical field of geosynthetic materials. The geotextile comprises a drainage layer which is of a three-dimensional water guide structure formed by biaxial warp knitting of special-shaped section wicking fiber bundles and polypropylene reinforced fiber bundles and used for efficient drainage; the reinforcing layer is of a grid structure which is formed by hot melting and bonding ultra-high molecular weight polyethylene fibers and has high tensile strength, and provides mechanical support; the heating layer is composed of carbon fiber heating wires which are arranged in parallel in a snakelike mode and electrically connected in series, and the heating layer is embedded in a quilting seam channel between the drainage layer and the reinforcing layer and can achieve active heating of soil; the temperature control module comprises a temperature sensor in the enhancement layer and a temperature control device connected with the heating layer in series, and the heating power can be dynamically adjusted according to a preset temperature threshold value. By means of the multi-layer composite structure and the intelligent temperature control system, effective integration of drainage, enhancement and active anti-freezing functions is achieved, and the engineering application performance of the geotechnical cloth in the cold environment is remarkably improved.

The whole reservoir anti-seepage reservoir of the pumped storage power station comprises a seepage control structure, a drainage collection system and a seepage monitoring system, the seepage control structure comprises a reservoir bottom seepage control structure and a reservoir bank seepage control structure, and the reservoir bottom seepage control structure comprises a geomembrane, a broken stone hardcore, a reservoir bottom transition layer, a geotechnical mat and geotechnical cloth; the reservoir bank seepage control structure comprises a geomembrane, a reservoir bank cushion layer, high-strength woven geotechnical cloth and a wave wall. On the basis of the characteristics of deformation and the like of different areas of the reservoir basin, adaptive seepage control types are designed and combined to form a complete full-reservoir-basin seepage control structure, seepage pressure value information of monitoring points is collected in real time through the seepage monitoring system, and the seepage pressure value information of the monitoring points is acquired in real time. And a leakage point position judgment method is provided to determine a local leakage point area.

Provided is a method for manufacturing an artificial turf, including: providing a base cloth; providing artificial turf yarns; tufting the artificial turf yarns on the base cloth, and applying an adhesive; and blowing air to the base cloth having the adhesive applied thereto to obtain the artificial turf. According to the manufactured artificial turf, when passing air through the air blowing device, water permeable holes are formed in the bonding layer applied on the base cloth. The water seepage rate of the artificial turf is increased by means of water seepage through the water permeable holes. Moreover, there is no need to pierce the adhesive applied surface of the base cloth during production, thereby avoiding damage to the structure of the artificial turf by piercing. This effectively prevents the artificial turf yarns from loosening and falling off and prolongs the service life of the artificial turf.

A synthetic turf cover system for covering various types of sloping ground includes synthetic grass blades tufted into and through a composite backing, with the composite backing including a non-woven synthetic textile lower layer and a woven textile upper layer positioned above and adjacent the non-woven synthetic textile lower layer. The non-woven synthetic textile lower layer provides good interface shear strength with the ground or a ground-covering membrane, while the woven textile upper lawyer provides good strength. The synthetic turf cover system provides good cushioning to help protect the geomembrane against damage from vehicles driving on the synthetic turf cover system.

Disclosed are exemplary embodiments of woven silt fence fabrics. In exemplary embodiments, the woven silt fence fabric may comprise a high-strength high-modulus monofilament woven silt fence fabric. In exemplary embodiments, the woven silt fence fabric may include two or more different warp yarns having different cross-sectional shapes in the machine direction and / or two or more different fill yarns having different cross-sectional shapes in the cross-machine / transverse direction.

The disclosed invention includes a method of making a carbon dioxide-removing insulating material composition and the resulting carbon dioxide-removing insulating material composition, the material composition having sufficiently low thermal conductivity, the material composition is of the carbon dioxide removal type and thus absorbs more CO2 from the atmosphere during its production and use than it emits and can permanently sequestration this CO2. This is achieved by using at least one pyrolysis step of thermally insulating biomass particles bound to a further binder or a binder contained in the material or by directly compositing the thermally insulating biomass particles after pyrolysis to produce a composition that is shaped at macroscopic and microscopic levels.

The invention relates to the technical field of soil remediation, and discloses a preparation method and an application method of geotechnical cloth for remediation or barrier of heavy metal contaminated soil. The graft modified keratin geotextile is prepared through pretreatment, cleaning, geotextile processing preparation and modification treatment. When the graft modified keratin geotextile is used for repairing the heavy metal contaminated soil, the graft modified keratin geotextile is laid below or inside the contaminated soil, and heavy metal ions in the soil are released into a liquid phase through leaching treatment and are adsorbed and fixed by the graft modified keratin geotextile. The method is efficient in treatment, can adsorb and remove heavy metals in the soil within a week, solves the problem of heavy metal migration and diffusion in a traditional remediation technology, is free of secondary pollution, can guarantee the original physicochemical properties of the soil, treats pollution with waste, and is low in cost. In addition, the composite material can also be used as an isolating layer, effectively avoids diffusion of heavy metal in soil, and has a wide application prospect.

A tufted article (e.g., an artificial turf panel) having a backing and a plurality of tufts extending through the backing. The plurality of tufts are distributed among a plurality of patterned regions. Each patterned region has at least one tuft of the plurality of tufts. The tufts of each patterned region differ from the tufts of at least one other patterned region of the tufted article in at least one of color, pile height, yarn type, or yarn density. At least one patterned region creates a longitudinal discontinuity in the color pattern of the tufted article. The tufted article does not have a seam. Complementary side edges of the tufted articles can be secured together to form at least a portion of the surface covering without the need for cutting or the use of inlay components.

The invention discloses a bamboo sheet, a bamboo sand barrier and a preparation method of the bamboo sand barrier, and belongs to the technical field of desertification control engineering. The invention provides a bamboo sheet. The cross section of the bamboo sheet is in a sector ring shape. The width-to-thickness ratio of the bamboo sheets is (5: 1)-(25: 1); the length of each bamboo sheet ranges from 200 mm to 600 mm; and the length-to-thickness ratio of the bamboo sheets is (100: 1)-(500: 1). The invention further provides the bamboo sand barrier which is of a warp and weft interwoven net-shaped structure and composed of the weaving lines and the bamboo sheets. The invention further provides a preparation method of the bamboo sand barrier. According to the invention, the structural characteristics of bamboos are utilized to prepare the fan-ring-shaped bamboo sheets, and the bamboo sheets have self elasticity, can effectively block the flow of sand grains and form a lasting sand stabilization network, and are applicable to sand stabilization materials in desertification control projects.

The invention relates to a geomaterial sheet comprising a first organic structural material and a second structural material, different from the first, which are connected to the first structural material to form a planar composite material sheet extending in two mutually perpendicular directions. The invention is characterized in that the first structural material and the second structural material are organic materials, the first structural material exhibits a first biodegradability to a certain extent, and the second structural material exhibits a second biodegradability that differs from the first biodegradability, in particular being lower than the first biodegradability.

A system for manufacturing synthetic turf is disclosed that includes an indexing system configured to affix an indexing device to a backing material, a tufting machine configured to receive the backing material and yarn and to fabricate the synthetic turf by tufting the yarn in the backing material and a controller configured to read the indexing device and to post process the synthetic turf as a function of the indexing device.

The present invention discloses an in-situ reconstruction and expansion structure for an embankment and a construction method thereof. The in-situ reconstruction and expansion structure for the embankment includes a stepped surface, which is excavated on the original slope. The slope of the stepped surface is the same as that of the expanded slope, and the stepped surface intersects with the top and bottom planes of the original slope respectively. Using the toe of the original slope as the toe of the expanded slope, the slope of the expanded slope is determined according to the toe position and the expansion width. The outer side of the stepped surface is filled with a geogrid reinforced layer in layers, and a slope protection structure is arranged on the outer side of the geogrid reinforced layer to form an expanded slope. A drainage system is provided at the bottom of the expanded slope for discharging the internal seepage water of the expanded structure. The present invention improves the stability, reduces the uneven settlement, reduces the floor area, does not conduct a full excavation, and reduces the project cost.

The invention relates to a shear wall composite reinforced soil retaining wall and a construction method thereof. An existing retaining wall structure has the problems that the manufacturing cost is high, a wall body is prone to displacement, the additional tensile stress of an anchor rod is too large, and the retaining wall structure is limited by geological conditions. The reinforced soil composite shear wall comprises an underground diaphragm wall, a middle reinforced soil composite shear wall structure and an upper reinforced soil structure. The wall bottom of the underground diaphragm wall is fixedly embedded in the bed rock; the middle reinforced soil composite shear wall structure comprises a plurality of rows of shear walls, a plurality of precast block panels and a plurality of layers of reinforced filling soil, the shear walls are arranged at the upper end of the underground diaphragm wall, the precast block panels and the reinforced filling soil form drawer-shaped structures between the shear walls, and a positive arch plate and a negative arch plate which are connected with the shear walls respectively are arranged in the reinforced filling soil; the upper reinforced soil structure comprises multiple layers of reinforced filling soil and a surface layer structure arranged on the outer side of the reinforced filling soil. The method is low in manufacturing cost, wall displacement and anchor rod additional tensile stress can be reduced, and dependence on site geological conditions is not large.

A method for producing artificial turf, comprising the steps of: providing a carrier material having a top side and a bottom side, providing a plurality of fibers, each fiber comprising two ends extending from the top side of the carrier material and comprising a connected region arranged in a loop on the bottom side of the carrier material, feeding the carrier material with the fibers to a heated rotating calender roll, guiding the carrier material with the fibers over at least a partial area of ​​the surface of the heated rotating calender roll, wherein the connected regions of the fibers and the bottom side of the carrier material face the calender roll, while guiding the carrier material with the fibers over at least a partial area of ​​the surface of the heated rotating calender roll: transferring heat from the heated rotating calender roll to the carrier material with the fibers,and fusing the connected areas of the fibers with the underside of the carrier material to form the artificial turf, as well as embossing an underside of the artificial turf.

The present application relates to the technical field of soil remediation, and discloses a preparation and application method of geotextile for heavy metal contaminated soil remediation or isolation. The present application prepares grafted and modified keratin geotextile through pretreatment, cleaning, geotextile processing and modification treatment. When the grafted and modified keratin geotextile is used for heavy metal contaminated soil remediation, it is laid under or in the contaminated soil, and leaching treatment is used to release heavy metal ions in the soil into liquid phase and be adsorbed and fixed by the grafted and modified keratin geotextile. The present application is efficient, can adsorb and remove heavy metals in the soil within one week, solves the problem of heavy metal migration and diffusion in traditional remediation technology, has no secondary pollution, can guarantee the original physicochemical properties of the soil, uses waste to treat pollution, and is low in cost. In addition, the present application can also be used as an isolation layer to effectively avoid the diffusion of heavy metals in the soil, and has a wide application prospect.

The present invention relates to a three-dimensional conductive mat, which is formed of a conductive knit fabric capable of distributing an electric charge homogeneously over its surface, characterised in that the knit fabric comprises at least one conductive metal filament yarn; to such a mat and to a composite material comprising 40-95% by volume of a thermoplastic and / or thermosetting polymer material; and to the use of such a three-dimensional conductive mat or such a composite material as a lightning resistant barrier.

A resin composition for monofilaments contains a poly(3-hydroxyalkanoate)-based resin component. The resin composition has a melting point peak temperature of 140° C. or higher and a crystal melting enthalpy of 65 J / g or less as calculated from all melting peaks in differential scanning calorimetry. The monofilament containing the resin composition has high strength and elongation. A method for producing the monofilament containing the resin composition contains, in the stated order, (i) discharging the resin composition in a molten state from a spinning nozzle, and then cooling thereby forming a raw yarn and (ii) stretching the raw yarn in at least one direction.

Disclosed are geotextiles configured for moisture management. In exemplary embodiments, a geotextile comprises a plurality of structural elements including one or more yarns, cords, or filament bundles arranged to form a fabric or grid. At least a portion of the structural elements include capillary-active surfaces and / or are configured to promote capillary wicking of moisture along at least one direction of the geotextile. At least a portion of the structural elements include internal void regions configured to maintain hydraulic conductivity under compaction. The geotextile is operable for providing dual-mode moisture transport through both capillary wicking and hydraulic flow thereby allowing for removal and redistribution of water from pavement layers and subgrade soils.

A method of manufacturing an artificial turf fiber includes extruding a polymer mixture through at least one fiber profile opening of an extrusion plate to form an artificial turf fiber, where the fiber profile opening includes first and second end portion openings and a curved middle portion opening has at least one spine opening proximate to at least one end portion opening, allowing the extruded polymer mixture to travel along a distance between the fiber profile opening to a quenching unit, where the at least one spine opening is sized and positioned such that a net polymer mass flow in the extruded polymer mixture from a position of the spine opening to the at least one end portion of the fiber proximate the spine opening occurs before the fiber is quenched, and quenching the extruded polymer mixture in the quenching unit to form the artificial turf fiber.

The invention discloses a deep silt layer woven cloth mechanical laying and modularized plate inserting system and method.The deep silt layer woven cloth mechanical laying and modularized plate inserting system comprises to-be-laid woven cloth arranged on a first floating body, the part, extending to the silt surface, of one side of the to-be-laid woven cloth is laid woven cloth, and one side of the first floating body is connected with a winch through a traction rope; a second floating body is arranged on the surface of the to-be-paved woven cloth, and an inserting rod is arranged on the second floating body; the construction efficiency and economical efficiency of mechanical laying of the woven cloth on the deep and thick silt layer and modular plate inserting are greatly improved, and meanwhile the safety risk is reduced.

A tensioning apparatus (200) is configured to apply a tension to elongate metal elements (20) which are supplied to a weaving machine (10) for manufacturing metal nettings (12) for geotechnical protection. The tensioning apparatus (200) comprises a tensioning device (228) having a group of drums (230), about which one or more coils of the elongate metal elements (20) to be placed under tension are wound. There are provided tensioning members (250) which keep the coils in contact with the drums (230) in such a manner as to adjust the friction between the elongate metal elements (20) and the drums (230) themselves so as to generate an opposing force counter to the pulling action which is applied by the weaving machine (10) and which tends to unwind the elongate metal elements (20) from the drums (230) of the tensioning device (228).