Composite geotextile for civil structure

Abstract

The invention discloses a composite geotechnical fabric of civil structure, which comprises the following parts: one deck genapping geotechnical cloth, one deck reinforced grid, wherein the genapping geotechnical cloth, warp knitting fabric fibre group, weft knitting fibre group are twisted a whole body by longitude line and latitude line; the singeing geotechnical cloth is get by technological treatment on one surface of the geotechnical cloth; the surface of the singed to make the grid composite geotechnical cloth spreading more open and flat; the reinforced grid is produced by warp knitting fiber glass, nylon, polypropylene, vinylon, terylene, aramid fiber or carbon fiber filament, which is the grid structure consists of a plurality of longitude, a plurality of latitude line; the geotechnical cloth adopts terylene fibre, nylon, polyethylene or polyester fiber. The composite geotechnical fabric has high tensile strength and low elongation, which avoids soil erosion.

Description

technical field [0001] The invention relates to a geotechnical fabric which plays a reinforcing role in civil engineering, in particular to a composite geotechnical fabric in which grids and geotextiles are combined. Background technique [0002] In recent years, in order to meet the needs of road transportation, my country has vigorously developed cement concrete roads on roads with heavy traffic and large traffic volume. Due to the cement pavement and old asphalt concrete pavement built in the early 1980s, the design standard was relatively low, the slabs were relatively thin, and some road sections were damaged to varying degrees, which could no longer meet the needs of heavy traffic. [0003] With the development of road construction, the task of road reconstruction and repair will become heavier and heavier. The focus of road construction in many developed countries is gradually shifting from the design and construction of new roads to the ren...

AI Technical Summary

Problems solved by technology

The appearance of reflective cracks in the thin-layer overlay is an inevitable phenomenon. The key problem is that once the reflective cracks appear, although the use of the surface layer is not greatly affected, water will leak from the cracks, which will accelerate the damage to the base layer and make the asphalt Silt appears on the surface layer, and wet and soft foundations appear, which will accelerate the cracking of cracks and greatly shorten the service life of the overlay

[0012] The currently used geotextiles are generally made of polyester fiber, nylon mesh or polyethylene mesh to form a composite geotextile. Due to its low tensile strength and high elongation, it is difficult to meet high-standard roads. engineering requirements

my country's patent, the patent number is: "ZL 92229852" and the name is "reinforced non-woven geotextile". It discloses a base cloth made of nylon mesh sandwiched between two layers of polyester fibers and entangled by needle punching. Reinforced non-woven geotextile, although this patent has played a positive role in reducing cost and weight, but because the material used has a large elongation, it is difficult to meet the requirements of high-standard road construction

Another patent, the patent number is: "ZL 00220607.2" named "composite glass fiber geotextile" discloses a glass fiber composite geotextile, the main feature of which is that the glass fiber composite geotextile is composed of geotextiles, reinforced grids and strands Although the tensile strength of the geotextile has been improved, the twisted wire is easy to break during construction due to the use of twisted wires to fix it, which makes the reinforced grid dislocated during construction, thus affecting the overall performance of the composite geotextile. The geotextiles in the two patents are all short-filament geotextiles, and the application fields are limited to water conservancy and civil engineering fields, and cannot be used for asphalt road coverings

[0013] Although the geotextiles in the above two patents have improved some performances compared with the previous ones, there are still many deficiencies in the overall performance of the geotextiles, which are worthy of further improvement and improvement when applied to road engineering

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