CN2761679Y

CN2761679Y - Grid composite geotext ile

Info

Publication number: CN2761679Y
Application number: CN 200420102990
Authority: CN
Inventors: 赵欣平; 张坤; 何唯平
Original assignee: Shenzhen Oceanpower Industrial Co Ltd
Current assignee: Shenzhen Oceanpower Industrial Co Ltd
Priority date: 2004-12-27
Filing date: 2004-12-27
Publication date: 2006-03-01
Anticipated expiration: 2014-12-27

Abstract

The utility model discloses grid compounded geotextile, which comprises singed non-woven geotextile, a layer of reinforcement grid and a layer of geotextile; an integral body is formed by compounding the singed non-woven geotextile, the geotextile and the reinforcement grid by high temperature hot pressing, wherein the singed non-woven geotextile is formed by singeing one surface of the geotextile; after singed, the surface of the singed non-woven geotextile is rough and not easy to slide in the work progress to cause the grid compounded geotextile to be flat in the process of spreading. The reinforcement grid is made from fibers, such as glass fiber, aramid fiber, or carbon fiber filaments, etc.; the reinforcement grid is a gridding which is composed of at least a group of warp threads and a group of weft threads. The geotextile is made from polyester fiber, nylon, polyethylene, polypropylene or polyester fiber, etc. The grid compounded geotextile has the characteristics of high tensile strength and low elongation. The utility model can avoid soil erosion and reinforce subgrade.

Description

A kind of grid composite earthwork cloth

Technical field

The utility model relates to a kind of geotextiles that plays humidification in the highway construction, especially a kind of grid composite earthwork cloth.

Background technology

For satisfying the needs of highway transportation, China greatly develops cement concrete pavement on the highway section of heavy traffic, heavy traffic in recent years.Because the cement pavement that the eighties initial stage builds, design standard is on the low side, and plate is thin partially, and damage has in various degree appearred in the highway section that has, and can not adapt to the needs of heavy traffic transportation.For adapting to the needs of the national economic development, on cement concrete pavement, overlay asphalt concrete pavement.Improve the function of use of cement pavement, can improve the planeness on road surface, to prevent the generation of reflection crack.Between basic unit and surface layer, lay geotextiles and saturated with asphalt, form geotextiles---pitch interlayer, prevent that basic crack from reflexing to surface layer.

The geotextiles of using generally adopts polyster fibre, nylon twine or the mutually compound mode system of polythene net to be made into composite earthwork cloth at present, because its tensile strength is lower, it is higher to add to elongation per unit length, so be difficult to satisfy the requirement of high standard highway construction.China's patent, the patent No. is: " ZL 92229852 " name is called " reinforcement non-woven geotextile " and discloses a kind of centre at two-layer polyster fibre and accompany the reinforcement non-woven geotextile that base cloth that one deck nylon grenadine makes tangles through acupuncture, though this patent is reducing cost, is playing positive effect in the weight reduction, but because its material that adopts has bigger elongation per unit length, so also be difficult to satisfy the requirement of high standard road project.Another patent, the patent No. is: " ZL 00220607.2 " name is called " composite glass fiber geotextiles " and discloses a kind of glass composite earthwork cloth, its principal character is that this glass composite earthwork cloth is made up of geotextiles, enhancing grid and twisted wire, though this geotextiles tensile strength increases, but fix owing to adopt twisted wire, twisted wire ruptures easily in construction, and the enhancing grid is misplaced in construction, thereby influences the overall performance of composite earthwork cloth.

Though more than geotextiles in two patents on some performances, made moderate progress with comparing in the past, on the overall performance of geotextiles, also have a lot of shortcomings, be worth when being applied to highway construction further improving, improving.

Summary of the invention

Grid composite earthwork cloth in the utility model adopts fiber filament to combine with geotextiles, and this grid composite earthwork cloth has the tensile strength height, and the characteristics that elongation per unit length is low have significant performance characteristics in highway construction.

Considering to strengthen on the basis reliable for effect, the grid composite earthwork cloth in the utility model comprises that the geotextiles of singing, one deck strengthen grid and one deck geotextiles, are combined into an integral body by the geotextiles of singing, geotextiles and enhancing grid by high temperature hot pressing.The geotextiles of singing is a surface of geotextiles to be handled through singeing form, and the geotextiles of singing is comparatively coarse through the rear surface of singing, and is not easy to slide in work progress, makes the grid composite earthwork cloth comparatively open and flat in paving process.Strengthen grid and made by fibers such as glass fiber, aramid fiber or carbon fiber filaments, strengthening grid is by at least one group of warp, one group of grid that parallel is formed.Geotextiles adopts polyster fibre, nylon, polyethylene, polypropylene or polyester fiber etc. to make.

Elder generation is with subgrade compaction during road construction, the surface that the grid composite earthwork cloth is had the geotextiles of singing paves smooth and is fixed towards roadbed, again in the utility model the grid composite earthwork cloth above overlay asphalt concrete material, at last with road roller with the bituminous mixture roller-compaction that paves, can finish work progress, open to traffic.

The advantage of grid composite earthwork cloth is in the utility model: strengthen grid not only plays enhancing to geotextiles purpose, also play simultaneously and strengthen the effect of filtering and intercepting, because strengthening grid is made up of at least one group of warp, parallel, thereby can select what of warp, parallel group number according to different engine request, to satisfy the designing requirement of engineering.Thereby the grid composite earthwork cloth not only has the effect of enhancing, can also play the effect of filtrations, isolation simultaneously to earth, just avoided the loss of water and soil, makes roadbed more firm.Grid composite earthwork cloth in the utility model is owing to simple in structure, easy to use, so very big practicality and promotion prospect are arranged.

Description of drawings

Fig. 1 is the plan view of grid composite earthwork cloth structure in the utility model;

Fig. 2 is the lateral view of grid composite earthwork cloth structure in the utility model.

Wherein: 1, the geotextiles of singing, 2, strengthen grid, 3, geotextiles, 4, warp, 5, warp.

The specific embodiment

Embodiment:

The description of embodiment of the present utility model can be with reference to figure 1～2.

Grid composite earthwork cloth in the present embodiment comprises that the geotextiles of singing (1), one deck strengthen grid (2) and one deck geotextiles (3), is combined into an integral body with enhancing grid (2) by high temperature hot pressing by the geotextiles of singing (1), geotextiles (3).The geotextiles of singing (1) is a surface of geotextiles to be handled through singeing form, and the geotextiles of singing (1) is comparatively coarse through the rear surface of singing, and is not easy to slide in work progress, makes the grid composite earthwork cloth comparatively open and flat in paving process.Strengthen grid (2) and adopt filament of glass fiber to make, strengthening grid (2) is the grid of being made up of four groups of warps (4), four groups of parallels (5); Geotextiles (3) is the polyester fiber nonwoven.

Elder generation is with subgrade compaction during road construction, the surface that the grid composite earthwork cloth is had geotextiles of singing (1) paves smooth and is fixed towards roadbed, above the grid composite earthwork cloth, overlay asphalt concrete material again, at last with road roller with the bituminous mixture roller-compaction that paves, can finish work progress.

Claims

1, a kind of grid composite earthwork cloth, comprise that the geotextiles of singing (1), one deck strengthen grid (2) and one deck geotextiles (3), is characterized in that: the described geotextiles of singing (1), geotextiles (3) are compounded to form an integral body with enhancing grid (2) by high temperature hot pressing; The geotextiles of singing (1) is a surface of geotextiles to be handled through singeing form; Geotextiles (3) is made by polyster fibre, nylon, polyethylene, polypropylene or polyester fiber etc.

2, grid composite earthwork cloth as claimed in claim 1 is characterized in that: described enhancing grid (2) is made by fibers such as glass fiber, aramid fiber or carbon fiber filaments.

3, grid composite earthwork cloth as claimed in claim 1 is characterized in that: the grid of described enhancing grid (2) for being made up of at least one group of warp (4), parallel (5).