Geogrid use
Geogrid use contact: Hou Manager mobile phone geogrid definition: two-dimensional grid or a certain height of three-dimensional grid with thermoplastic or molded polymer such as polypropylene or polyvinyl chloride The screen grid, when used as a civil engineering, is called a geogrid. Residential Sectional Garage Door
A typical version of an overhead garage door used in the past would have been built as a one-piece panel.The panel was mounted on each side with unequal parallelogram style hinge lifting mechanism. Newer versions of overhead garage doors are now generally built from several panels hinged together that roll along a system of tracks guided by rollers. The door is balanced by either a torsion spring system or a pair of extension springs.A remote controlled motorized mechanism for opening garage doors adds convenience, safety, and security
• Aluminum garage doors are low-cost, light, rust-proof, and feature low-maintenance. They are prone to denting because aluminum is not strong and they are energy-inefficient since aluminum is a highly conductivematerial.
• Fiberglass and vinyl garage doors are composite units, combining a steel core behind a fiberglass or vinyl skin. They have also polyurethane insulated base sections, or other type of foam insulation. These premium doors can match steel garage doors, and be a realistic imitation of wood (namely fiberglass units), but they may be more expensive than steel units.
• Steel doors have become common and are available in a variety of sizes and styles, provide strength and security, are cost-competitive, and may have optional insulating value. Extra strength is available with two or three layers of galvanized steel with a low gauge number (23-24 gauge steel panels).
• Wood garage doors offer aesthetic appeal, but they are high-maintenance and may be expensive. Low-priced wood garage doors may warp and break easily.
1. Geogrid Geogrid is a major geosynthetic material with unique properties and efficacy compared to other geosynthetics. Geogrids are often used as reinforcements for reinforced earth structures or as composite materials. Geogrid is divided into four categories: plastic geogrid, steel geogrid, fiberglass geogrid and glass fiber geogrid.
(1) Plastic geogrid The plastic geogrid is a square or rectangular polymer mesh which is formed by stretching, and may be uniaxially stretched or biaxially stretched according to the direction of stretching in the manufacture. It is punched on a extruded polymer sheet (mostly polypropylene or high density polyethylene) and then subjected to oriented stretching under heating. The unidirectionally stretched grid is stretched only along the length of the sheet, while the biaxially stretched grid is continuously stretched by stretching the unidirectionally stretched grid in a direction perpendicular to its length.
Since the polymer of the geogrid in the manufacturing process is rearranged and oriented with the heating extension process, the bonding force between the molecular chains is strengthened, and the strength is improved. Its elongation is only 10% to 15% of the original board. If an anti-aging material such as carbon black is added to the geogrid, it can have good durability against acid, alkali, corrosion and aging.
(2) Steel-plastic geogrid steel-plastic geogrid with high-strength steel wire (or other fiber), specially treated, with polyethylene (PE), and other additives, through extrusion to make it a composite high-strength tensile Strips with rough embossing on the surface are high-strength reinforced geotechnical belts. The single belt is formed by longitudinal or transverse arranging or clamping, and is welded by a fusion welding technique with special strengthening bonding to form a reinforced geogrid.
(3) Glass fiber geogrid Glass fiber geogrid is a mesh structure material made of glass fiber and made by a certain weaving process. It protects the glass fiber and improves the overall performance. After special coating process Geosynthetics. The main component of glass fiber is: silicon oxide, which is an inorganic material. Its physical and chemical properties are extremely stable, and it has high strength, high modulus, high wear resistance and excellent cold resistance, no long-term creep; thermal stability. Good property; the mesh structure makes the aggregate interlock and limit; improve the load-bearing capacity of the asphalt mixture. Because the surface is coated with special modified asphalt, it has two-fold composite performance, which greatly improves the wear resistance and shearing capacity of the geogrid.
Sometimes combined with self-adhesive pressure-sensitive adhesive and surface asphalt impregnation, the grid and asphalt pavement are tightly integrated into one. Due to the increased interlocking force of the earth and stone in the geogrid grid, the friction coefficient between them increases significantly (up to 08 to 10), and the pull-out force of the geogrid embedded in the soil is due to the gap between the grid and the soil. The frictional bite force is stronger and significantly increased, so it is a good reinforcement material. At the same time, the geogrid is a kind of plastic flat net material with light weight and certain flexibility. It is easy to cut and connect on site, and can also overlap and overlap. It is easy to construct and does not require special construction machinery and professional technicians.
(4) Polyester fiber warp-knitted geogrid Polyester fiber warp-knitted geogrid is selected from high-strength polyester fiber. The warp-knitted oriented structure, the warp and weft yarns in the fabric are not bent with each other, and the intersections are combined with high-strength fiber filaments to form a firm joint point, giving full play to its mechanical properties, high-strength polyester fiber warp-knitted geogrid The grid has high tensile strength, small elongation force, high tear strength, small difference in longitudinal and transverse strength, resistance to ultraviolet aging, abrasion resistance, corrosion resistance, light weight, strong interlocking force with soil or gravel, and reinforcement of soil. Shearing and reinforcing improve the integrity and load of the soil and have a significant effect.
Contact: Hou Manager Address: Shandong Taian Telephone Mobile Fax: [email protected]
Company website: http:// geshan123.chinawj.com.cn
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