CN1986968A - Composite earthwork cloth for road - Google Patents
Composite earthwork cloth for road Download PDFInfo
- Publication number
- CN1986968A CN1986968A CN 200510097158 CN200510097158A CN1986968A CN 1986968 A CN1986968 A CN 1986968A CN 200510097158 CN200510097158 CN 200510097158 CN 200510097158 A CN200510097158 A CN 200510097158A CN 1986968 A CN1986968 A CN 1986968A
- Authority
- CN
- China
- Prior art keywords
- road
- composite earthwork
- earthwork cloth
- grid
- geotextiles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 239000004744 fabric Substances 0.000 title claims description 24
- 239000004746 geotextile Substances 0.000 claims abstract description 24
- 229920000728 polyester Polymers 0.000 claims abstract description 9
- 239000003365 glass fiber Substances 0.000 claims abstract description 6
- 238000009954 braiding Methods 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims abstract description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 3
- 239000004917 carbon fiber Substances 0.000 claims abstract description 3
- 238000001467 acupuncture Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 238000009958 sewing Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 21
- 239000010426 asphalt Substances 0.000 description 19
- 230000035882 stress Effects 0.000 description 13
- 239000011384 asphalt concrete Substances 0.000 description 9
- 239000002344 surface layer Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 238000005336 cracking Methods 0.000 description 5
- 239000011295 pitch Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Road Paving Structures (AREA)
Abstract
A composite geotextile for highway is made up of a geotextile layer prepared from polyester filaments through needling and a soil-engineering grate layer prepared from glass fibers or carbon fibers or polyester fibers through braiding and sewing to combine them together. Its advantages are high adhesion to road surface, high resistance to high temp, acid, alkali, weather, light and water, high strength, high elastic modulus, and low elongation.
Description
Technical field
The present invention relates to a kind of engineering material that highway is used of laying, especially a kind of composite earthwork cloth.
Background technology
The crack is the topmost a kind of mode of failure of flexible pavement, and the reflection crack problem of flexible pavement is of long duration.The semi-rigid layer of newly-built flexible pavement because self rigidity is big, non-deformability is poor, when temperature decrease or moisture loss, can produce shrinkage strain.And the frictional resistance effect between its substratum (soil matrix or subbase) and this layer has suppressed its contraction, thereby in the inner tensile stress that produces of this layer, ruptures when this stress surpasses its tensile strength.Behind the semi-rigid type base cracking, place, crack at asphalt surface course and semi-rigid type base interlayer forms a weak spot, because the acting in conjunction of load stress and thermal stresses, the asphalt surface course bottom surface of this point produces stress and concentrates, if asphalt surface course is thinner, then can cause cracking.Under the effect repeatedly of driving and atmospheric factor, the crack is upwards expansion gradually subsequently, and until the bitumen layer surface, this crack is commonly referred to reflection crack.For the situation of old pitch or old cement pavement Laying Asphalt Surface Course, there is the crack in former road surface, and in use, place, the crack of the bottom of overlay produces stress and concentrates, and causes pavement cracking, and then extends to road surface formation reflection crack.
In order to delay and reduce the generation of reflection crack, the measure of in the past taking is for to be provided with geotextiles or geo-grid between semi-rigid type base or old pavement and overlay upper layer.Isolate lower floor's crack stress though geotextiles relies on the deformation of self to absorb, be not damaged with the protection surface layer, geotextiles self intensity is limited, can not fully satisfy the requirement of high grade pavement overcoat under some harsh conditions.High several times of the strength ratio geotextiles of geo-grid own improves surface layer cracking resistance ability by the reinforcement humidification.But geo-grid and underpavement binding ability are poor, cause horizontal movement between upper layer and the following surface layer, and disease takes place to pass.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the shortcoming that requires because of self intensity overcoat limited, can not satisfy high grade pavement under some harsh conditions when in the past using geotextiles merely, or causes geo-grid easily when using geo-grid merely and the underpavement binding ability is poor, the shortcoming of disease takes place to pass between surface layer and the following surface layer.
In order to solve the problems of the technologies described above, the invention provides a kind of composite earthwork material-composite earthwork cloth, it is formed by one deck geotextiles and the braiding of one deck geo-grid.Wherein geotextiles can adopt PFY acupuncture non-woven geotextile, and geo-grid can adopt glass fiber or carbon fiber or Polyester Fibers, and the two is stitched together through braiding.
According to the needs of actual engineering, can adopt the not geotextiles of commensurate's grammes per square metre and the geo-grid of different size.During laying, geotextiles down, grid up.
Geotextiles adopts PFY acupuncture non-woven geotextile, and the polyester heatproof reaches 230 ℃.Tensile strength is that elongation per unit length is greater than 40% greater than 5.7kN.Because the intensity of geotextiles is little, the elongation per unit length height, under the vehicular load effect, can produce bigger distortion and do not destroy, so can reduce the mutual constraint of bitumen layer and semi-rigid type base or old pavement, rely on himself bigger deformability to suppress the generation of temperature mode reflection crack, reduce the additional temp stress of base plate, play the effect that absorbs diffusion-induced stress, thereby delay the generation of temperature mode reflection crack bitumen layer.Because geotextiles saturated with asphalt oil has become material impervious to water, can prevent effectively that surface water from infiltrating basic unit, makes the unlikely further deterioration of basic unit; Have insulation effect, slow down basic unit's cooling.
Geo-grid adopts the geo-grid of glass fiber, polyester fiber establishment, and heatproof surpasses 230 ℃, and tensile strength 15～35kN, elongation per unit length are less than 15%, and modulus of elasticity is greater than 67GPa.Because the intensity height of geo-grid, rigidity is big, can improve the intensity of ground surface material comprehensively, changes the stress distribution of road structure.Geo-grid is set can increase the integral rigidity on road surface, the bitumen layer flexure is reduced, improve the rutting resistance of asphalt surface course, its anticracking effect essence is a kind of isolation features, semi-rigid type base or the old pavement of having separated asphalt surface course and bottom, the stress of having avoided bitumen layer directly to be in crack tip is concentrated, and bears bigger tensile stress by himself intensity, thereby has hindered the rapid expansion in crack.
Adopt composite earthwork cloth of the present invention, can give full play to that geotextiles and road surface associativity are strong, high temperature resistant, the advantage of acid-alkali-corrosive-resisting, weatherability, light resistance, waterproof, stress isolation, can bring into play the advantage that geo-grid intensity height, reinforcement strengthen surface layer again.Advantage in conjunction with geotextiles and two kinds of materials of geo-grid makes up for each other's deficiencies and learn from each other, and when solving asphalt pavement reflective cracking, prevents the infiltration of moisture, and reinforced action is provided, and prolongs the application life on road surface etc.This composite earthwork cloth has the intensity height, and modulus of elasticity height, elongation per unit length are little, high temperature resistant and low temperature, characteristics such as anti-aging.
The index of glass fiber grid is as follows in the composite earthwork cloth:
The glass fiber grid
| Tensile strength | Elongation rate | Size of mesh opening | Modulus of elasticity | |
| Radially (KN/m) | Broadwise (KN/m) | ％ | mm×mm | Gpa |
| 30 | 30 | ≤3 | 25.4×25.4 | 67 |
| 50 | 50 | ≤3 | 25.4×25.4 | 67 |
| 60 | 60 | ≤3 | 25.4×25.4 | 67 |
| 80 | 80 | ≤3 | 25.4×25.4 | 67 |
| 60 | 60 | ≤3 | 12.7×12.7 | 67 |
| 80 | 80 | ≤3 | 12.7×12.7 | 67 |
The index of polyester grid is as follows in the composite earthwork cloth:
The polyester grid
| Tensile strength | Elongation rate | Size of mesh opening | |
| Radially (KN/m) | Broadwise (KN/m) | ％ | mm×mm |
| 40 | 10 | ≤15 | 25.4×25.4 |
| 50 | 10 | ≤15 | 25.4×25.4 |
| 80 | 10 | ≤15 | 25.4×25.4 |
| 100 | 10 | ≤15 | 25.4×25.4 |
| 20 | 20 | ≤15 | 25.4×25.4 |
| 30 | 30 | ≤15 | 25.4×25.4 |
| 40 | 40 | ≤15 | 25.4×25.4 |
| 50 | 35 | ≤15 | 25.4×25.4 |
| 50 | 50 | ≤15 | 25.4×25.4 |
| 80 | 50 | ≤15 | 25.4×25.4 |
| 80 | 80 | ≤15 | 25.4×25.4 |
| 100 | 100 | ≤15 | 25.4×25.4 |
| 120 | 120 | ≤15 | 25.4×25.4 |
The index of polyester geotextiles is as follows in the composite earthwork cloth:
The PFY non-woven geotextile
| Mass area ratio (g/m 2) | Thickness (mm) | Ultimate strength (KN/m) | Elongation at break (%) |
| 120±10％ | 1.4±15％ | ≥5.7 | 40～80 |
| 150±10％ | 1.6±15％ | ≥8.0 | 40～80 |
| 160±10％ | 1.9±15％ | ≥8.5 | 40～80 |
This material construction is simple, is widely used in the flexible pavement of various standard highways, town road, and be the ideal material that improves the flexible pavement pavement performance.Especially can be used between high grade highway pavement and semi-rigid type base or the old road cover enhancement layer as stress absorption and reinforcement.
Description of drawings
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
Figure 1 shows that the road structure schematic diagram of the embodiment 1 that has adopted composite earthwork cloth of the present invention;
Figure 2 shows that the road structure schematic diagram of the embodiment 2 that has adopted composite earthwork cloth of the present invention;
Figure 3 shows that the road structure schematic diagram of the embodiment 3 that has adopted composite earthwork cloth of the present invention;
Each description of reference numerals is as follows:
The 1st, old cement concrete pavement; The 2nd, composite earthwork cloth; The 3rd, sticking layer oil; The 4th, saturating layer; The 5th, semi-rigid type base;
The 6th, 15cm asphalt concrete surface layer; The 7th, 2cm AC-5 I pitch leveling layer; The 8th, 6cm AC-13 asphalt concrete surface layer;
The 9th, 4cm AC-13 II asphalt concrete surface layer.
The specific embodiment
Embodiment 1:
As shown in Figure 1, a kind of newly-built speedway that is provided with composite earthwork cloth, basic unit is a semi-rigid type base, the road surface is an asphalt concrete pavement.
Because the planeness and the cleannes of semi-rigid type base are relatively poor, so spray a coating emulsified asphalt earlier as saturating layer, the sprinkling amount is 0.7～1.5L/m
2, treat the 2cm AC-5 I bituminous concrete leveling layer that paves after mulseal infiltration and the water evaporates, evenly spray the sticking layer oil of heated bitumen oil again after the compacting sclerosis as composite earthwork cloth, asphalt content is 0.95～1.2kg/m
2, temperature adopts machine to lay composite earthwork cloth then, and rolls twice with pneumatic-tired rollers between 150～170 ℃, and paving at last three layers amounts to the 15cm asphalt concrete pavement.
Embodiment 2:
As shown in Figure 2, a kind of old road of transformation municipal administration that is provided with hot composite earthwork cloth, former road surface is a cement concrete pavement, overlay is an asphalt concrete pavement.
Because the planeness and the integral rigidity on former road surface all reach requirement, so do not do any processing, just clean road surface and seam crossing, above evenly spray one deck 0.95～1.2kg/m
2Heated bitumen oil as sticking layer oil, temperature remains on 150～170 ℃, sprays heated bitumen 20-30 rice shop composite earthwork cloth at interval simultaneously, the 1 layer of 6cm AC-13 bituminous mixture that begin subsequently to pave gets final product with the road roller compacting.
Embodiment 3:
As shown in Figure 3, a kind of old road of transformation municipal administration that hot composite earthwork cloth is set, former road surface is an asphalt concrete pavement, overlay is an asphalt concrete pavement.
Because former road is longer service time, not only smooth surface, and pitch has in various degree aging, so earlier with the former road surface of milling machine milling 4cm, to reach necessary construction depth, cleaning is clean, evenly sprays one deck 0.95～1.2kg/m then
2Heated bitumen oil as sticking layer oil, pitch adopts No. 90 pitches of bi tumenf orr oad A level, and temperature should be 150～170 ℃, sprays to begin to lay composite earthwork cloth after 1 minute, roll twice with pneumatic-tired rollers, one deck 4cm AC-13 I particulate formula asphalt concrete pavement subsequently begins to pave.
Claims (4)
1. composite earthwork cloth for road is characterized in that: it is formed by geotextiles and geo-grid braiding.
2. a kind of composite earthwork cloth for road according to claim 1 is characterized in that: geotextiles adopts PFY acupuncture non-woven geotextile.
3. a kind of composite earthwork cloth for road according to claim 1 is characterized in that: geo-grid adopts glass fiber or carbon fiber or Polyester Fibers.
4. according to claim 1 or 2 or 3 described a kind of composite earthwork cloth for road, it is characterized in that: during laying, geotextiles down, grid up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510097158 CN1986968A (en) | 2005-12-22 | 2005-12-22 | Composite earthwork cloth for road |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510097158 CN1986968A (en) | 2005-12-22 | 2005-12-22 | Composite earthwork cloth for road |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1986968A true CN1986968A (en) | 2007-06-27 |
Family
ID=38183900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510097158 Pending CN1986968A (en) | 2005-12-22 | 2005-12-22 | Composite earthwork cloth for road |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1986968A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418539B (en) * | 2008-11-27 | 2012-02-01 | 常州天马集团有限公司 | Road foundation cloth |
| CN102505602A (en) * | 2011-10-26 | 2012-06-20 | 华南理工大学 | Structure and construction method for reinforcing asphalt pavement by drive pins wound with glass fiber yarn |
| CN103321123A (en) * | 2013-07-04 | 2013-09-25 | 重庆交通大学 | Highway, pavement structure and construction method of highway pavement |
| CN107190606A (en) * | 2017-06-19 | 2017-09-22 | 东南大学 | A kind of multifunction road cover structure heated beneficial to microwave |
| CN108824411A (en) * | 2018-07-06 | 2018-11-16 | 江苏海川新材料科技有限公司 | A kind of compound building cloth of high-strength polyester fibers grid |
| CN109208444A (en) * | 2017-06-30 | 2019-01-15 | 辛显兵 | A kind of self-adhering type Anticracking plaster |
| CN112477321A (en) * | 2020-12-24 | 2021-03-12 | 山东诚汇金实业有限公司 | Geotextile, preparation method and application |
| CN112501977A (en) * | 2020-11-20 | 2021-03-16 | 重庆交通大学 | Composite bionic anti-cracking layer for road and construction method thereof |
| CN113226857A (en) * | 2018-11-30 | 2021-08-06 | 康宁公司 | Cold-formed glass articles with thermal matching systems and processes for forming the same |
| CN116429900A (en) * | 2023-03-31 | 2023-07-14 | 中铁四局集团有限公司 | A method for preventing and monitoring the cracking state of high-fill roadbed expressway |
| CN116968410A (en) * | 2023-08-02 | 2023-10-31 | 德州宏瑞土工材料有限公司 | Production process of moisture-preserving geotechnical cloth for highway maintenance |
-
2005
- 2005-12-22 CN CN 200510097158 patent/CN1986968A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418539B (en) * | 2008-11-27 | 2012-02-01 | 常州天马集团有限公司 | Road foundation cloth |
| CN102505602A (en) * | 2011-10-26 | 2012-06-20 | 华南理工大学 | Structure and construction method for reinforcing asphalt pavement by drive pins wound with glass fiber yarn |
| CN103321123A (en) * | 2013-07-04 | 2013-09-25 | 重庆交通大学 | Highway, pavement structure and construction method of highway pavement |
| CN103321123B (en) * | 2013-07-04 | 2016-08-10 | 重庆交通大学 | A kind of construction method of highway pavement |
| CN107190606A (en) * | 2017-06-19 | 2017-09-22 | 东南大学 | A kind of multifunction road cover structure heated beneficial to microwave |
| CN109208444A (en) * | 2017-06-30 | 2019-01-15 | 辛显兵 | A kind of self-adhering type Anticracking plaster |
| CN108824411A (en) * | 2018-07-06 | 2018-11-16 | 江苏海川新材料科技有限公司 | A kind of compound building cloth of high-strength polyester fibers grid |
| CN113226857A (en) * | 2018-11-30 | 2021-08-06 | 康宁公司 | Cold-formed glass articles with thermal matching systems and processes for forming the same |
| CN112501977A (en) * | 2020-11-20 | 2021-03-16 | 重庆交通大学 | Composite bionic anti-cracking layer for road and construction method thereof |
| CN112477321A (en) * | 2020-12-24 | 2021-03-12 | 山东诚汇金实业有限公司 | Geotextile, preparation method and application |
| CN116429900A (en) * | 2023-03-31 | 2023-07-14 | 中铁四局集团有限公司 | A method for preventing and monitoring the cracking state of high-fill roadbed expressway |
| CN116968410A (en) * | 2023-08-02 | 2023-10-31 | 德州宏瑞土工材料有限公司 | Production process of moisture-preserving geotechnical cloth for highway maintenance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113215907B (en) | Asphalt additional paving structure for old concrete pavement of urban road intersection and construction method thereof | |
| JPH111901A (en) | New construction of road made from rigid material | |
| US7621693B2 (en) | Asphalt fiber panels for pavement construction and repair | |
| CN1986968A (en) | Composite earthwork cloth for road | |
| CN202945619U (en) | Basement wall and baseplate waterproof and drainage structure | |
| CN102493496A (en) | Capillary blockage cover layer structure with lateral drainage capacity | |
| CN106436525B (en) | A kind of old concrete road surface inhibits the composite construction and remodeling method of reflection crack | |
| CN206887665U (en) | A kind of Asphalt Pavement with Flexible Base splices widened structure | |
| CN210262547U (en) | An asphalt pavement binding structure | |
| CN103114510B (en) | Bituminous pavement provided with lattice structure transition compound layer and construction method thereof | |
| CN2758313Y (en) | Grille composite grading cloth for road | |
| CN215164252U (en) | A basalt composite roadbed structure | |
| CN216663672U (en) | Road structure capable of reducing reflection crack diseases | |
| CN2761679Y (en) | Grid composite geotext ile | |
| CN113863083A (en) | A long-life pavement structure based on sandwich structure and its construction method | |
| CN105625150B (en) | A kind of method that asphalt pavement pit repairs border reinforcement | |
| CN103088739A (en) | Multifunctional three-dimensional grid for asphalt mixture | |
| CN211395218U (en) | Cold regeneration basic unit road surface structure of emulsified asphalt plantmix | |
| CN216786738U (en) | Highway bituminous pavement structure | |
| CN216275080U (en) | Long-life road surface structure based on sandwich structure | |
| CN216156280U (en) | Reinforced cement stabilized macadam base road structure | |
| CN116065442A (en) | Design and construction method of crack-resistant heavy-load traffic highway asphalt pavement | |
| CN210507007U (en) | Roadbed structure suitable for unilateral heavy-load transportation | |
| KR100583938B1 (en) | Asphalt concrete pavement seam crack prevention method | |
| CN221810489U (en) | A kind of anti-aging and environmentally friendly asphalt pavement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20070627 |