CN202081436U

CN202081436U - Anti-seep geotextile for building surface gap

Info

Publication number: CN202081436U
Application number: CN2011201235716U
Authority: CN
Inventors: 蔡莲红
Original assignee: SHANGHAI MINGCHENG NONWOVEN CLOTH CO Ltd
Current assignee: SHANGHAI MINGCHENG NONWOVEN CLOTH CO Ltd
Priority date: 2011-04-25
Filing date: 2011-04-25
Publication date: 2011-12-21
Anticipated expiration: 2021-04-25

Abstract

The utility model discloses an anti-seep geotextile for a building surface gap, which has a three-layer structure, wherein the upper layer is a water repellent polyester filament material layer, the intermediate layer is a lithophylic fiber material layer, and the lower layer is a hydrophilic polyester filament material layer; the three layers are compounded into the geotextile through either stitch knitting, needling, or water-jetting; and at least one surface of the upper and the lower two surfaces of the geotextile is provided with sintered layer through singeing. Different with the traditional product, as the lithophylic fiber layer closely and alternately connected with the polyester filament layer is added and can be blended with the cement into a whole, the anti-seep geotextile for the building surface gap can be widely applied to national infrastructure and domestic infrastructure.

Description

A kind ofly be used to build slit, surface antiseep geotextiles

Technical field

The utility model relates to building materials field, particularly a kind ofly is used to build slit, surface antiseep geotextiles.

Background technology

A large amount of inputs along with national urbanization construction and infrastructure, no matter be the municipal newly constructed facility in city, still the rural water conservancy is built, and China is used for newly-built very huge with depreciation project maintenance building materials demand, comprising the antiseep geotextiles in building slit, surface.

Tradition PFY geotextiles is to adopt the polyester way directly to make through spinning acupuncture is fixed, and product specification is from 80～800g/m ² , it is a kind of geosynthetics commonly used in geotechnical engineering and the civil engineering, is to become net and fixed method to make by PFY, its fiber alignment becomes three-dimensional structure.Except having the good mechanical performance, also have good in length and breadth to drainage performance and favorable extensibility energy and higher anti-biology, acid and alkali-resistance, chemical stability such as ageing-resistant.Simultaneously, also have the pore diameter range of broad, tortuous distribution of pores, good permeance property and strainability.

The PFY geotextiles has been widely used in the infrastructure construction field, as the anti-filter of hydraulic engineering dykes and dams and bank protection, the isolation of channel, antiseepage; The basis isolation of highway, railway, airfield runway, anti-filter, draining, slight slope, retaining wall and road surface reinforcement, draining; The treatment of soft foundation of port works, seabeach embankment, sea port dock and mole reinforcement, draining.

Yet, no matter be, still directly and the mode of occupation of asphalt paving, can run into all that a timeliness is flaked, the seepage phenomenon the form of PFY geotextiles with asphalt felt, especially between the slit of building body, it is surprising to be used to build the accumulative total expense that the body seepage repairs every year.

Seepage Mechanism:

Because the building body generally adopts the portland-type cement mortar as coagulating agent, its hydrophilicity and calcium carbonate class base material have good affinity, and handle through chemical finish on traditional PFY geotextiles surface, smooth in appearance.The impregnating pitch ability is strong, combine desirable separation layer of formation with withered layer oil, it is good in length and breadth to drainage performance that the fabric gap has it, because the fabric gap that between the building body of densification and pitch, exists, can't distribute after making rainwater vaporize, original antiseep bitumen layer can be flaked, chap and be lost efficacy after gas expands.

Also just since the PFY geotextiles in length and breadth to drainage performance, cause at place, the slit of seepage and can not find out cracking; And the cracking place there is not the slit, thereby produces blindly mending-leakage, mending-leakage repeatedly, causes the waste of a large amount of manpowers, financial resources.

Tradition antiseep technology is paid attention to degree of adhering to and the compactedness of bituminous material to the silicate concrete surface, yet the physical property of this two classes material differs greatly, under the identical irradiation and the situation of being heated, its the two density, dilation, hardness, oxidizability has nothing in common with each other, traditional PFY geotechnique layer of cloth just plays the adhewsive action of base cloth to bituminous material, and no any adhesive power between the silicate concrete surface, in case cause steam expansion bitumen layer therefore to flake, to chap.

Because it is outdoor that the building body mostly is exposed to, along with the continuous appearance of the extreme temperature in the whole world, pitch blanket felt formula in the past and filling type building surface Antiseep method be the demand of incompatibility social development far.

Summary of the invention

Problem at above-mentioned traditional antiseep technology and the existence of PFY geotextiles, the utility model is intended to propose a kind of PFY geotextiles of modification material according to its seepage Mechanism, make itself and concrete that very strong tack be arranged, thereby form a kind of slit, surface antiseep geotextiles that is used to build.

The technical scheme that its technical problem that solves the utility model adopts is: a kind ofly be used to build slit, surface antiseep geotextiles, this geotextiles is a three layer construction, the upper strata is for refusing water type PFY material layers, the middle level is close silicate fiber material layers, lower floor is a hydrophilic PFY material layers, three layer construction is by one of loop bonding, acupuncture, three kinds of modes of the water thorn geotextiles that is composited, the sinter layer that has at least a surface to have on two surfaces up and down of this geotextiles to singe and form.

Described close silicate fiber is one of glass fiber, asbestos fiber, basalt fibre, string, modification chemical fibre.

Different with traditional product, the utility model has increased one deck and the PFY layer has the close silicate fiber layer that closely is cross-linked, and its upper strata is for refusing water type PFY material layers; Lower floor is a hydrophilic PFY material layers, after the moulding of geotextiles compounding machine, component content in three layers is trapezoidal cross-distribution, through singing processing, the brute force that obtains high-intensity meltbility molecule is cohered, formed sinter layer, the point of contact of its fusion is rendered as multidirectional molecular structure, interconnection between each component in it has not only reinforced three layers, all have very strong riveted joint effect for the pitch macromolecule of last boundary infiltration and the silicate molecules of following boundary infiltration simultaneously, the glass fiber component of the close silicate fiber layer in the middle of the geotextiles is a silica simultaneously, alumina, calcium oxide, boron oxide, magnesia, sodium oxide molybdenas etc. combine together fully with cement.

Description of drawings

Fig. 1, the 2nd, the utility model structural representation;

Fig. 3 is the utility model acupuncture composite construction schematic diagram;

Fig. 4 is no close silicate fiber layer acupuncture composite construction schematic diagram;

Fig. 5 contains close silicate fiber layer acupuncture composite construction schematic diagram (before singing);

Fig. 6 contains close silicate fiber layer acupuncture composite construction schematic diagram (the two-sided back of singing);

Fig. 7 is the utility model concrete component plane user mode schematic diagram;

Fig. 8 is the utility model concrete component facade user mode schematic diagram;

Fig. 9 is the utility model flexible pavement user mode schematic diagram;

Figure 10 is the utility model singeing structural representation;

Figure 11-the 1st, the utility model singeing flame spray head is cut the burning schematic diagram;

Figure 11-the 2nd, the utility model singeing flame spray head is to burning schematic diagram;

Figure 11-the 3rd, the utility model singeing flame spray head burns schematic diagram thoroughly;

Figure 11-the 4th, the flat schematic diagram that burns of the utility model singeing flame spray head.

Among its figure: the 1-sinter layer; 2-refuses water type PFY material layers; 3-parent silicate fiber layer; 4-hydrophilic PFY material layers; The 5-recombination line; The 6-concrete component; The 7-cement layer; The 8-bitumen layer.

The specific embodiment

The utility model illustrates specific implementation method with acupuncture produced with combination technology as most preferred embodiment:

At first by designing requirement respectively with the material of three shop layers counterweight by weight percentage, with PFY as about two layers of base material, refuse water and hydrophilic preliminary treatment respectively; Glass fiber is set to the middle level base material, to three aspects fibrage carry out the opener shredding respectively, feeding carding machine combing, parallel connection exports quadrature lapping machine to, with 200g/m ² Geotextiles is an example, is laid to net thickness and is about 5.0～6.0 centimetres, and net guide is input to acupuncture mechanism and reinforces, and needle plate is put pin, 17000～25000 pieces/m of density for pricking random formula ² , frequency 800～1200rpm, linear velocity 4.0～5.0m/s(sees Fig. 3).The base material of considering close silicate fiber layer is a glass fiber, and its mechanical performance is fragility, easily broken comparatively, is advisable to adopt lower limit in puncture frequency and linear velocity.

Comparison diagram 4 and Fig. 5 can see differently with traditional product, and the utility model has increased one deck and the PFY layer has the close silicate fiber layer that closely is cross-linked, and its upper strata is for refusing water type PFY material layers; Lower floor is a hydrophilic PFY material layers, after process acupuncture is compound, component content in three layers is trapezoidal cross-distribution, owing to connect for mechanical friction between acupuncture composite three-layer fiber, its bonding strength does not still reach powerful the connection, so the utility model again through the processing of singing together, coheres (see figure 10) in the hope of high-intensity meltbility molecule.

The processing of singing through jet flames, can form a sinter layer (see figure 6) on positive and negative two surfaces of the geotextiles of composite molding, the point of contact of its fusion is rendered as multidirectional molecular structure, interconnection between each component in it has not only reinforced three layers, all have very strong riveted joint effect for the pitch macromolecule of last boundary infiltration and the silicate molecules of following boundary infiltration simultaneously, the glass fiber component of the close silicate fiber layer in the middle of the geotextiles is a silica simultaneously, alumina, calcium oxide, boron oxide, magnesia, sodium oxide molybdena etc. combine together fully with cement (seeing Fig. 7～9).

The surface that the is different from knitting class processing of singing, the processing of singing of nonwoven is the fixation of cohering at chemical fibre, the intrinsic different mode of singing, mainly contain cut burning, to burn, burn thoroughly, flat burn (seeing that Figure 11-1 is to Figure 11-4), by changing position, angle, the relative displacement speed of jet flames and geotextiles, obtain the geotextiles of different mechanical performances.The utility model can change the degree of depth, hardness, the tensile strength of sintering according to the different designs requirement, and in general, its sintering hardness and the degree of depth are proportional; And tensile strength and fragility are inversely proportional to.For burning of flooring more shallow, and for the road surface because ultraviolet radiation is stronger, it is comparatively serious that automobile rolls, and can take dark burning, selection in like manner thick and heavy also wanted corresponding change.

Owing to adopt and between pitch and concrete, increase one deck parent silicate fiber layer, the utility model can be widely used in national basis facilities such as highway, railway, airport, harbour, harbour, water conservancy, and the antiseep of civilian roofing, body of wall, interior decoration.Hydrophilic surface can be covered in concrete or cement face during use, pitch covers to be applied to and refuses the water surface after solidifying; Also available The tape casting is made single face pitch felt rug refusing the water surface, and the former can be used for building the seepage in slit, surface, and the latter can be used for the mechanization in large tracts of land place and lays.

The above only is a preferred embodiment of the present utility model; can not limit protection domain of the present utility model with it; the utility model also can have other structural change; so long as the equalization of doing according to protection domain of the present utility model changes and modify, all should belong in the scope that the utility model contains.

Claims

1. one kind is used to build slit, surface antiseep geotextiles, it is characterized in that this geotextiles is a three layer construction, the upper strata is for refusing water type PFY material layers, the middle level is close silicate fiber material layers, lower floor is a hydrophilic PFY material layers, three layer construction is by one of loop bonding, acupuncture, three kinds of modes of the water thorn geotextiles that is composited, the sinter layer that has at least a surface to have on two surfaces up and down of this geotextiles to singe and form.

2. according to claim 1ly be used to build slit, surface antiseep geotextiles, it is characterized in that middle level parent's silicate fiber is glass fiber, asbestos fiber, basalt Fiber, one of string, modification chemical fibre.