CN102733284B - Double-layer rubber asphalt concrete structure for inhibiting reflection cracks of pavement and pavement method - Google Patents
Double-layer rubber asphalt concrete structure for inhibiting reflection cracks of pavement and pavement method Download PDFInfo
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- CN102733284B CN102733284B CN201110437131.2A CN201110437131A CN102733284B CN 102733284 B CN102733284 B CN 102733284B CN 201110437131 A CN201110437131 A CN 201110437131A CN 102733284 B CN102733284 B CN 102733284B
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Abstract
The invention discloses a double-layer rubber asphalt concrete structure for inhibiting reflection cracks of a pavement, from the bottom up comprising a treated old cement concrete pavement, an anti-cracking tack coat, a lower surface adopting a special modified asphalt mixture, and an upper surface adopting a rubber asphalt mixture. The invention simultaneously discloses a pavement method of the double-layer rubber asphalt concrete structure, comprising the following steps: (a) firstly pasting an anti-cracking belt on the junction of adjacent cement boards, and then spraying modified emulsified asphalt tack coat oil with the thickness of 0.8-1.0 mm to form the anti-cracking tack coat; (b) then paving the special modified asphalt mixture with the paving thickness of 4-8 cm to form the lower surface; and (c) finally paving the rubber asphalt mixture to form the upper surface. According to the invention, the generation and extension of the reflection cracks can be effectively inhibited, and the service life and service condition of the pavement structure can be improved.
Description
Technical field
The invention belongs to highway construction technical field, be specifically related to a kind of the double-layer rubber asphalt concrete structure and the paving method that suppress reflection crack (crack that cement pavement easily produces after direct Laying Asphalt Surface Course).
Background technology
Flexible pavement is become to mainly contain two schemes concrete pavement rebuilding at present: one is rubblization, cement concrete pavement is broken into surface is less than 8 centimetres, bottom is less than the concrete block of 40 centimetres combine closely, inner embedded squeezing, again Paving Bituminous Concrete layer again after firm, the problem in crushed stone technology areflexia crack.But rubble operation that the shortcoming of this method has been many, increase cost, and the noise brought in rubble process has a strong impact on surrounding enviroment, beneath pipeline also can be destroyed simultaneously.Another kind is direct Paving Bituminous Concrete deck on cement pavement, and this method eliminates rubble operation, simple to operate, can not affect surrounding enviroment, is the more method of current domestic use, but can produces reflection crack problem.How the generation of more effective suppression reflection crack, is this scheme urgent need to solve the problem.
The domestic and international measure to suppressing or slow down Reflective Crack in Asphalt Overlays to produce is still in test and heuristic process, the main method of current employing has following several, as: increase asphalt thickness, rubble crack relief layer be set, geotextiles is set between asphalt overlay and Cement Concrete Pavement Slab, geo-grid, modified bitumen asphaltic felt, gauze wire cloth or modification (rubber) pitch stress absorbing membrane etc.Because actual pavement crack producing cause is numerous, above scheme only can solve crack resistance in a certain respect, therefore after engineer applied, suppresses the effect of reflection crack not given prominence to, and reflection crack is often than the more Zao appearance of expection.This area is in the urgent need to providing a kind of asphalt concrete structure that effectively can suppress reflection crack generation and extension.
Summary of the invention
The object of the invention is for above-mentioned present situation, a kind of double-layer rubber asphalt concrete structure of crack resistance is provided, effectively to suppress generation and the extension of reflection crack, improve application life and the duty status of road structure.
In order to reach the object of the invention, the invention provides following technical scheme: a kind of double-layer rubber asphalt concrete structure suppressing reflection crack, comprise and be from bottom to top: the Old cement concrete after punishment, anticracking tack coat, adopt the cutting optimal of extraordinary grating modified asphalt mixture, adopt the upper layer of rubber-asphalt mixture.
Further preferably, described anticracking tack coat comprises the Anticracking plaster that is pasted onto adjacent boards block intersection and spills the modified emulsifying asphalt be layered on described Anticracking plaster and sticks layer oil.
Further preferably, described Anticracking plaster is SBS (styrene-butadiene block copolymer) tack Anticracking plaster, wide 40-60cm, thickness 3-4mm; Described modified emulsifying asphalt sticks the glutinous layer oil that layer oil is SBS modified emulsifying asphalt or SBR (SB is commonly called as butadiene-styrene rubber) modified emulsifying asphalt, and the content of its evaporated residue is greater than 50%.The evaporated residue needle penetration of described SBS modified emulsifying asphalt or SBR modified emulsifying asphalt is 40-60 (0.1mm), and evaporated residue softening point is 55 DEG C ~ 65 DEG C, and 5 DEG C of ductilities of evaporated residue are greater than 20cm.
Further preferably, described extraordinary grating modified asphalt mixture comprise high viscosity SBS modified bitumen, gather materials, fiber stabilizer and rubber grain; Described high viscosity SBS modified bitumen volume is the 3%-6% of quality of asphalt mixtures, described in gather materials and comprise coarse aggregate and fine aggregate, described coarse aggregate is basalt or diabase, and described fine aggregate is limestone; Described fiber stabilizer is lignin fibre, and average length is 3mm-6mm, and volume is 0.1% ~ 0.6% of described mixture quality; Described rubber grain is rubber grain after waste tire is pulverized, and grain fineness is 10 order-30 orders; Grating source is that half open gradation bituminous concrete moxture mixes rubber grain, and mixture gap rate reaches the requirement of 3%-6% thick grading.
Further preferably, described extraordinary grating modified asphalt mixture aggregate grading scope is:
| Percent of pass % | 19 | 16 | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| SDG-13 | 100 | 100 | 90-100 | 50-85 | 20-36 | 15-27 | 7-20 | 5-16 | 3-12 | 1-8 | 1-6 |
| SDG-16 | 100 | 90-100 | 70-85 | 45-70 | 20-34 | 15-26 | 5-17 | 5-14 | 3-10 | 1-8 | 1-6 |
| SDG-20 | 90-100 | 60-86 | 50-76 | 40-63 | 20-34 | 15-25 | 5-16 | 4-12 | 3-10 | 1-8 | 1-6 |
Further preferably, described rubber-asphalt mixture, for adding rubber modified asphalt, adopts the rubber-asphalt mixture of SMA grating.
The present invention discloses a kind of paving method of double-layer rubber asphalt concrete structure, mat formation according to the following steps:
(a), paste Anticracking plaster at the intersection of adjacent boards block, then the modified emulsifying asphalt spilling paving 0.8mm ~ 1.0mm thickness sticks layer oil and forms anticracking tack coat (2);
(b), then to pave extraordinary grating modified asphalt mixture, paving thickness is that 4cm ~ 8cm forms cutting optimal (3); Such as the SDG-13 of the 4cm ~ 5cm that paves, or the SDG-16 of 5cm ~ 6cm, or the SDG-20 of 6cm ~ 8cm;
C (), the last rubber-asphalt mixture that paves again form upper layer (4).
Further, first stabilization treatment should be carried out to old cement sheeting before described step (a).
The present invention in terms of existing technologies, has following characteristics:
1, first this patent by firmly processing cement board, then first Anticracking plaster is pasted at the intersection of adjacent boards block, spill paving modified emulsifying asphalt again and stick layer oil formation anticracking tack coat, thus it is firm the space between every block adjacent boards to be carried out filling; Overlay double-layer rubber asphalt concrete structure thereon again, ensure that the permanent deformation such as Rut resistance, fatigue problem.
2, the extraordinary grating bituminous mixture of cutting optimal can dispersive stress, and dissipation concentrated stress, effectively suppresses the generation of reflection crack.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of double-layer rubber asphalt concrete structure of the present invention.
Detailed description of the invention
As the schematic diagram that Fig. 1 is double-layer rubber asphalt concrete structure of the present invention.Double-layer rubber asphalt concrete structure of the present invention is by being from bottom to top: the Old cement concrete 1 after punishment, anticracking tack coat 2, adopt the cutting optimal 3 of extraordinary grating modified asphalt mixture, adopt the upper layer 4 of rubber-asphalt mixture to form.
Anticracking tack coat 2 comprises the Anticracking plaster that is pasted onto adjacent boards block intersection and spills the modified emulsifying asphalt be layered on Anticracking plaster and sticks layer oil.Anticracking plaster adopts SBS tack Anticracking plaster, the junction of the edges of two sheets of paper is pasted onto adjacent boards block intersection, the wide 40cm-60cm of SBS tack Anticracking plaster, thickness 3mm-4mm, its performance indications meet the requirement of " highway engineering geosynthetics testing regulation " (JTG E50); Modified emulsifying asphalt requires to see the following form 1.
The technical requirements of table 1 modified emulsifying asphalt
Cutting optimal 3 adopts extraordinary grating modified asphalt mixture, and extraordinary grating modified asphalt mixture is called for short that SDG (Special dense gradation) comprises high viscosity SBS modified bitumen, gathers materials, fiber stabilizer and rubber grain; Described high viscosity SBS modified bitumen volume is 3% ~ 6% of quality of asphalt mixtures, described in gather materials and comprise coarse aggregate and fine aggregate, described coarse aggregate is basalt or diabase, and described fine aggregate is limestone; Described fiber stabilizer is lignin fibre, and average length is 3mm ~ 6mm, and volume is 0.1% ~ 0.6% of described mixture quality; Described rubber grain is rubber grain after waste tire is pulverized, and grain fineness is 10 order ~ 30 orders; Grating source is that half open gradation bituminous concrete moxture mixes rubber grain, and mixture gap rate reaches 3% ~ 6% thick grading requirement.SDG adopts dry process to produce compound, namely first rubber grain and fiber stabilizer are put into during heat is gathered materials and mix and stir 10 seconds ~ 15 seconds, then spray into high viscosity SBS modified bitumen wet-mixing 40 seconds ~ 45 seconds, mix and stir temperature and be not less than 170 DEG C, grating adopts the design of table 2 scope.
Table 2SDG mineral aggregate gradation scope
| Percent of pass % | 19 | 16 | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| SDG-13 | 100 | 100 | 90-100 | 50-85 | 20-36 | 15-27 | 7-20 | 5-16 | 3-12 | 1-8 | 1-6 |
| SDG-16 | 100 | 90-100 | 70-85 | 45-70 | 20-34 | 15-26 | 5-17 | 5-14 | 3-10 | 1-8 | 1-6 |
| SDG-20 | 90-100 | 60-86 | 50-76 | 40-63 | 20-34 | 15-25 | 5-16 | 4-12 | 3-10 | 1-8 | 1-6 |
Cutting optimal 3 can adopt SDG-13 or SDG-16 or SDG-20 grating to implement, and implements thickness and is respectively 4-5cm, 5-6cm and 6-8cm.
Upper layer 4 adopts rubber-asphalt mixture, and this rubber-asphalt mixture, for adding rubber modified asphalt, adopts the rubber-asphalt mixture of SMA grating.This rubber-asphalt mixture adopts wet processing to produce, i.e. first Prefabricated rubber asphalt, after put into that mixing in cylinder gathers materials with heat mixes and stirs, produce, the mixing time is not less than 40 seconds, mixes and stirs temperature and is not less than 170 DEG C.SMA grating requires design with reference to " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40), and upper layer 4 can adopt SMA-10 or SMA-13 or SMA-16 grating, implements thickness and is respectively 3-4cm, 4-5cm and 5-6cm.
Embodiment 1: first firmly dispose old cement sheeting, then pastes SBS tack Anticracking plaster at the intersection junction of the edges of two sheets of paper of adjacent boards block, then the modified emulsifying asphalt spilling paving 0.8mm-1.0mm sticks layer oil formation anticracking tack coat; Then pave SDG-20 bituminous mixture, and paving thickness is that 6cm forms cutting optimal; The last grating that paves again is the rubber-asphalt mixture of SMA-13, and paving thickness is that 4cm forms upper layer.
Embodiment 2: first paste SBS tack Anticracking plaster at the intersection junction of the edges of two sheets of paper of adjacent old cement sheeting, the modified emulsifying asphalt then spilling paving 0.8mm-1.0mm sticks layer oil and forms anticracking tack coat; Then pave SDG-13 bituminous mixture, and paving thickness is that 4cm forms cutting optimal; The last grating that paves again is the rubber-asphalt mixture of SMA-10, and paving thickness is that 3cm forms upper layer.
Embodiment 3: first paste SBS tack Anticracking plaster at the intersection junction of the edges of two sheets of paper of adjacent old cement sheeting, then the modified emulsifying asphalt spilling paving 0.8mm-1.0mm sticks layer oil formation anticracking tack coat; Then pave SDG-16 bituminous mixture, and paving thickness is that 5.5cm forms cutting optimal; The last grating that paves again is the rubber-asphalt mixture of SMA-13, and paving thickness is that 5cm forms upper layer.
Those skilled in the art will recognize that; above-mentioned detailed description of the invention is exemplary; to enable those skilled in the art better understand this patent content; should not be understood as the restriction to this patent protection domain; as long as according to this patent disclose any equivalent change done of spirit or modification, all fall into this patent protection domain.
Claims (7)
1. suppress a double-layer rubber asphalt concrete structure for reflection crack, it is characterized in that: comprise and be from bottom to top: the Old cement concrete (1) after punishment, anticracking tack coat (2), adopt the cutting optimal (3) of extraordinary grating modified asphalt mixture, adopt the upper layer (4) of rubber-asphalt mixture;
The cutting optimal (3) of described extraordinary grating modified asphalt mixture comprises high viscosity SBS modified bitumen, gathers materials, fiber stabilizer and rubber grain;
Described high viscosity SBS modified bitumen volume is the 3%-6% of quality of asphalt mixtures, described in gather materials and comprise coarse aggregate and fine aggregate, described coarse aggregate is basalt or diabase, and described fine aggregate is limestone; Described fiber stabilizer is lignin fibre, and average length is 3mm-6mm, and volume is 0.1% ~ 0.6% of described mixture quality; Described rubber grain is rubber grain after waste tire is pulverized, and grain fineness is 10 order-30 orders; Grating source is that half open gradation bituminous concrete moxture mixes rubber grain, and mixture gap rate reaches the requirement of 3%-6% thick grading.
2. double-layer rubber asphalt concrete structure according to claim 1, is characterized in that: described anticracking tack coat (2) comprises the Anticracking plaster that is pasted onto adjacent boards block intersection and spills the modified emulsifying asphalt be layered on described Anticracking plaster and sticks layer oil.
3. double-layer rubber asphalt concrete structure according to claim 2, is characterized in that: described Anticracking plaster is SBS tack Anticracking plaster, wide 40-60cm, thickness 3-4mm; Described modified emulsifying asphalt sticks the glutinous layer oil that layer oil is SBS modified emulsifying asphalt or SBR modified emulsifying asphalt.
4. double-layer rubber asphalt concrete structure according to claim 3, is characterized in that: the content of the evaporated residue of described SBS modified emulsifying asphalt or SBR modified emulsifying asphalt is greater than 50%.
5. double-layer rubber asphalt concrete structure according to claim 1, is characterized in that: described rubber-asphalt mixture is the rubber-asphalt mixture of the employing SMA grating adding rubber modified asphalt.
6. adopt a paving method for the double-layer rubber asphalt concrete structure described in the arbitrary claim of claim 1 to 5, it is characterized in that: mat formation according to the following steps:
(a), paste Anticracking plaster at the intersection of adjacent boards block, then the modified emulsifying asphalt spilling paving 0.8mm ~ 1.0mm thickness sticks layer oil and forms anticracking tack coat (2);
(b), then to pave extraordinary grating modified asphalt mixture, paving thickness is that 4cm ~ 8cm forms cutting optimal (3);
C (), the last rubber-asphalt mixture that paves again form upper layer (4).
7. paving method according to claim 6, is characterized in that: first carry out stabilization treatment to old cement sheeting described step (a) is front.
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| CN103132420A (en) * | 2013-03-20 | 2013-06-05 | 深圳市市政设计研究院有限公司 | Repairing and transforming method of old cement concrete pavement |
| CN103693896B (en) * | 2013-12-25 | 2018-02-13 | 上海浦兴路桥建设工程有限公司 | A kind of asphalt for suppressing reflection cracking in a pavement and its preparation method and application |
| CN103966936A (en) * | 2014-05-23 | 2014-08-06 | 招商局重庆交通科研设计院有限公司 | Double reflection crack prevention structure for preventing reflection cracks of composite pavement and implementation method thereof |
| CN105926401A (en) * | 2014-06-30 | 2016-09-07 | 上海浦东路桥建设股份有限公司 | Thin layer asphalt concrete structure for inhibiting pavement reflection cracks and paving method |
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| CN107460803A (en) * | 2017-07-19 | 2017-12-12 | 广东金长成桥梁隧道科技有限公司 | The asphalt pavement structure and its construction method of a kind of Reflection Cracking |
| CN108914736A (en) * | 2018-07-26 | 2018-11-30 | 江苏增光复合材料科技有限公司 | A kind of high viscoelastic rubber modified bitumen road surface and its construction technology |
| CN109610260A (en) * | 2018-12-24 | 2019-04-12 | 上海浦兴路桥建设工程有限公司 | A kind of penetrated asphalt pavement structure inhibiting reflection cracking in a pavement |
| CN112281687A (en) * | 2020-10-20 | 2021-01-29 | 南京道润交通科技有限公司 | Steel bridge deck pavement pit defect repairing structure and repairing method |
| CN113105161A (en) * | 2021-03-15 | 2021-07-13 | 深圳市市政设计研究院有限公司 | Safe noise-reduction pavement material and preparation method thereof |
| CN113235350B (en) * | 2021-05-20 | 2022-05-17 | 福建新华夏建工集团有限公司 | Method for realizing concrete road reconstruction by additionally paving asphalt concrete surface layer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003253608A (en) * | 2002-02-27 | 2003-09-10 | Dyflex Holdings:Kk | Pavement method and pavement structure |
| CN101148856A (en) * | 2007-11-12 | 2008-03-26 | 徐培华 | Asphalt macadam stress absorption layer and construction method thereof |
| CN101514536A (en) * | 2009-03-13 | 2009-08-26 | 上海浦东路桥建设股份有限公司 | Stress absorbing load bearing complex structure of high viscosity asphalt gap grading |
-
2011
- 2011-12-23 CN CN201110437131.2A patent/CN102733284B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003253608A (en) * | 2002-02-27 | 2003-09-10 | Dyflex Holdings:Kk | Pavement method and pavement structure |
| CN101148856A (en) * | 2007-11-12 | 2008-03-26 | 徐培华 | Asphalt macadam stress absorption layer and construction method thereof |
| CN101514536A (en) * | 2009-03-13 | 2009-08-26 | 上海浦东路桥建设股份有限公司 | Stress absorbing load bearing complex structure of high viscosity asphalt gap grading |
Non-Patent Citations (2)
| Title |
|---|
| GSOG应力吸收层抑制反射裂缝能力的研究;胡睿等;《上海公路》;20110331(第1期);第1-5、14页 * |
| 旧水泥砼路面沥青加铺层反射裂缝试验研究;苏新国等;《重庆交通学院学报》;20050430;第24卷(第2期);第46-51、56页 * |
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