CN101736670B - Water-proof crack-resistant layer for highway - Google Patents
Water-proof crack-resistant layer for highway Download PDFInfo
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- CN101736670B CN101736670B CN2009101754452A CN200910175445A CN101736670B CN 101736670 B CN101736670 B CN 101736670B CN 2009101754452 A CN2009101754452 A CN 2009101754452A CN 200910175445 A CN200910175445 A CN 200910175445A CN 101736670 B CN101736670 B CN 101736670B
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Abstract
The invention discloses a water-proof crack-resistant layer for a highway, which is formed by mixing polymer modified asphalt and aggregate of 165 DEG C to 195 DEG C and blending, spreading and grinding by using conventional asphalt mixture construction equipment. The water-proof crack-resistant layer for the highway is used for preventing the highway road from being damaged by water because of cold cracking and infiltration of rain or snow into the road base of the highway, has the characteristics of simple and convenient construction operation, high water-proof crack resistance and high and low temperature stability, and is a water-proof crack-resistant structural layer which is formed by hot mixing and spreading and has excellent high and low temperature properties, high density and high strength.
Description
Technical field
The present invention relates to a kind of highway structure technical field, especially a kind of water-proof crack-resistant layer for highway.
Background technology
Existing highway is many to be laid with cement concrete or bituminous mixture, according to the highway technology code requirement, top course is divided into three layers structure or two-layer structure, three layers structure is divided into surface course, middle surface layer, following surface layer from top to bottom, the two-layer structure is divided into surface course and following surface layer from top to bottom, and the composition design of the bituminous mixture that each layer is commonly used in the surface layer should be considered according to combined factors such as weather conditions, the traffic volume and traffic composition such as its bed thickness and layer position, temperature and amount of precipitations.Existing highway road upper layer is the density structure, and cold cracking causes pavement crack, and rain, snow infiltrate highway structure layer inside and causes the damage by water of highway road basic unit bad.Under the effect that wheel rolls, road surface purt slurry, loose appears easily, the hole, hole, gather around bag, in length and breadth to phenomenons such as cracks.These diseases are all relevant with water basically, and it is bad to be called damage by water.The following type of the general employing of existing highway waterproof measure: 1, spill the thin-layer bituminous or modified bitumen of cloth, spread one deck sand on it, form seal under the pitch gluing through rolling; 2, high molecular polymer gluings such as brushing polyurethane clay, epoxy resin, cationic emulsified bitumen; 3, mat formation pitch or modified asphalt waterproof coiled material and the non-woven geotextile of impregnating pitch; 4, thickening supercrust gross thickness.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of highway pavement cracking, sleet of can effectively preventing and is penetrated into the water-proof crack-resistant layer for highway of middle surface layer.
For solving the problems of the technologies described above, the technical solution used in the present invention is: this water-proof crack-resistant layer is mixed with 165 ℃～195 ℃ gather materials by modified bitumen, adopts plain asphalt compound construction equipment mix, paves, rolls and form.
Preferred modified bitumen is the 8-20% of gross weight of gathering materials.
Preferred modified bitumen uses 10
#～90
#The bi tumenf orr oad modification forms.
Preferred modified bitumen is a polymer-modified asphalt.
5 ℃ of ductilities of preferred modified bitumen: be not less than 30cm; Needle penetration: 5.0-6.5mm, softening point: be not less than 75 ℃.
Preferably gather materials and mix: rubble 10-70%, natural sand 0-60%, flake asbestos 5-35% and basalt fibre 0.1-3% by following weight percentages.
The length of preferred basalt fibre is 2～10mm.
Adopt the beneficial effect that technique scheme produced to be: 1, low temperature brittle point of the present invention is in-1～-40 ℃ of scope, and its low-temperature adaptation performance is adjustable, and it is crisp to reach subzero 40 ℃ of flaggies, and has extensibility;
2, owing to have a low-temperature adaptation performance, the present invention has minimum internal stress and tensile strength greatly under high and low temperature, can avoid the generation of self thermal stress cracks, and 75 ℃ of high temperature is softening, so can resist the reflection crack of sub-layer;
3, the present invention has excellent waterproof property, and the following passage that oozes of blocking-up water prevents that the early water infringement from appearring in road surface structare layer.
The present invention is used to prevent that highway road from infiltrating the damage by water evil that highway road basic unit causes because of cold cracking and sleet, be applicable to the road surface structare layer of all thickness and type, have that construction operation is easy, water-proofing anticracking height, characteristics that high temperature performance is good, it is a kind of high and low temperature superior performance, high density, high-intensity water-proofing anticracking heat mixes the deck of type.
The specific embodiment
The present invention is further detailed explanation below in conjunction with the specific embodiment.
Embodiment 1:
Adopt the raw material of following weight to make: rubble 3.63kg, natural sand 5.61kg, flake asbestos 1.76kg, basalt fibre 0.066kg, polymer-modified asphalt 1.32kg (5 ℃ of ductility: 45cm; Needle penetration: 5.0mm, softening point: 90 ℃).
Preparation method: at 165 ℃～195 ℃ above-mentioned raw materials mixed and to obtain modified asphalt mixture, modified asphalt mixture is adopted plain asphalt compound construction equipment mix, paves and rolls, can obtain this water-proof crack-resistant layer for highway.This water-proof crack-resistant layer for highway is laid on the bottom of highway upper layer.
The testing result of modified asphalt mixture: stability 9.1kN, 3100 times/mm of dynamic stability, void content 0.4%, infiltration coefficient 0.7mL/min,-15 ℃ of hot strength 1.72MPa, 25 ℃ of shear strength 1.69Mpa ,-10 ℃ of low temperature bend test failure strains are 24426 μ ε.Detection method adopts the conventional detection method of JTG F40-2004 " asphalt highway construction technique normalizing " regulation.
Embodiment 2:
Adopt the raw material of following weight to make: rubble 5kg, natural sand 30kg, flake asbestos 13.5kg, basalt fibre 1.5kg, polymer-modified asphalt (5 ℃ of ductility: 40cm; Needle penetration: 6.0mm; Softening point: 80 ℃) 9.7kg.
Preparation method: with embodiment 1.
The testing result of modified asphalt mixture: stability 8.0kN, 2100 times/mm of dynamic stability, void content 0.2%, infiltration coefficient 0.5mL/min,-15 ℃ of hot strength 1.50MPa, 25 ℃ of shear strength 1.58Mpa ,-10 ℃ of low temperature bend test failure strains are 27397 μ ε.Detection method adopts the conventional detection method of JTG F40-2004 " asphalt highway construction technique normalizing " regulation.
Embodiment 3:
Adopt the raw material of following weight to make: rubble 35kg, flake asbestos 14.95kg, basalt fibre 0.05kg, polymer-modified asphalt (5 ℃ of ductility: 45cm; Needle penetration: 6.5mm; Softening point: 95 ℃) 7.5kg.
Preparation method: with embodiment 1.
The testing result of modified asphalt mixture: stability 8.4kN, 2400 times/mm of dynamic stability, void content 0.35%, infiltration coefficient 0.66mL/min,-15 ℃ of hot strength 1.62MPa, 25 ℃ of shear strength 1.60Mpa ,-10 ℃ of low temperature bend test failure strains are 25130 μ ε.Detection method adopts the conventional detection method of JTG F40-2004 " asphalt highway construction technique normalizing " regulation.
Embodiment 4:
Adopt the raw material of following weight to make: rubble 35kg, natural sand 12kg, flake asbestos 2.5kg, basalt fibre 1kg, polymer-modified asphalt (5 ℃ of ductility: 30cm; Needle penetration: 6.0mm; Softening point: 75 ℃) 5kg.
Preparation method: with embodiment 1.
The testing result of modified asphalt mixture: stability 8.9kN, 2600 times/mm of dynamic stability, void content 0.5%, infiltration coefficient 0.71mL/min,-15 ℃ of hot strength 1.61MPa, 25 ℃ of shear strength 1.58Mpa ,-10 ℃ of low temperature bend test failure strains are 21400 μ ε.Detection method adopts the conventional detection method of JTG F40-2004 " asphalt highway construction technique normalizing " regulation.
Embodiment 5:
Adopt the raw material of following weight to make: rubble 67kg, flake asbestos 17.5kg, basalt fibre 1kg, polymer-modified asphalt (5 ℃ of ductility: 40cm; Needle penetration: 5.5mm; Softening point: 92 ℃) 6.8kg.
Preparation method: with embodiment 1.
The testing result of modified asphalt mixture: stability 8.2kN, 2530 times/mm of dynamic stability, void content 0.85%, infiltration coefficient 0.92mL/min,-15 ℃ of hot strength 1.42MPa, 25 ℃ of shear strength 1.55Mpa ,-10 ℃ of low temperature bend test failure strains are 18990 μ ε.Detection method adopts the conventional detection method of JTG F40-2004 " asphalt highway construction technique normalizing " regulation.
The durability that is equipped with the water-proof crack-resistant layer for highway highway that embodiment 1-5 obtains is: after coming into operation 12 months, and the rut degree of depth: 0-3mm, crack: 0mm.
Claims (4)
1. water-proof crack-resistant layer for highway, it is characterized in that, this water-proof crack-resistant layer is mixed with 165 ℃～195 ℃ gather materials by polymer-modified asphalt, adopt plain asphalt compound construction equipment mix, pave, roll and form, described gathering materials mixed by following weight percentages: rubble 10-70%, natural sand 0-60%, flake asbestos 5-35% and basalt fibre 0.1-3%; Described polymer-modified asphalt is the 8-20% of gross weight of gathering materials.
2. water-proof crack-resistant layer for highway according to claim 1 is characterized in that, described polymer-modified asphalt is for using 10
#～90
#The bi tumenf orr oad modification forms.
3. water-proof crack-resistant layer for highway according to claim 1 is characterized in that, 5 ℃ of ductilities of described polymer-modified asphalt: be not less than 30cm; Needle penetration: 5.0-6.5mm, softening point: be not less than 75 ℃.
4. water-proof crack-resistant layer for highway according to claim 3 is characterized in that, the length of described basalt fibre is 2～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101754452A CN101736670B (en) | 2009-11-19 | 2009-11-19 | Water-proof crack-resistant layer for highway |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101754452A CN101736670B (en) | 2009-11-19 | 2009-11-19 | Water-proof crack-resistant layer for highway |
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| CN101736670A CN101736670A (en) | 2010-06-16 |
| CN101736670B true CN101736670B (en) | 2011-04-27 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2637701C1 (en) * | 2017-01-11 | 2017-12-06 | Владимир Петрович Кудрявцев | Radar absorbent asphalt-concrete mixture and roadway covering made from this mixture |
| CN110578280B (en) * | 2019-08-19 | 2021-08-24 | 江苏增光新材料科技股份有限公司 | Crack-resistant anti-scouring cement pavement composite structure |
| CN117534421B (en) * | 2024-01-09 | 2024-03-26 | 长江岩土工程有限公司 | Impermeable material, preparation method and application thereof in dam construction |
-
2009
- 2009-11-19 CN CN2009101754452A patent/CN101736670B/en active Active
Non-Patent Citations (4)
| Title |
|---|
| 刘卡迪.浅谈热沥青加单一粒径碎石封层技术.《山西建筑》.2009, * |
| 周炜.沥青玛蹄脂碎石混合料施工的试验检测.《路基工程》.2005, * |
| 李爱国.SBS改性沥青同步碎石封层施工工艺及质量控制.《公路》.2009, * |
| 田兴.SBS改性沥青混合料路面摊铺与压实.《辽宁省交通高等专科学校学报》.2003, * |
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| CN101736670A (en) | 2010-06-16 |
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