CN103526663A - Method for repairing asphalt concrete pavement distresses by utilization of combined-type concrete repaving surfacing - Google Patents
Method for repairing asphalt concrete pavement distresses by utilization of combined-type concrete repaving surfacing Download PDFInfo
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- CN103526663A CN103526663A CN201310515935.9A CN201310515935A CN103526663A CN 103526663 A CN103526663 A CN 103526663A CN 201310515935 A CN201310515935 A CN 201310515935A CN 103526663 A CN103526663 A CN 103526663A
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Abstract
The invention discloses a method for repairing asphalt concrete pavement distresses by utilization of combined-type concrete repaving surfacing. Firstly, the bearing capability of old asphalt pavements are evaluated through apparatuses, and the pavements with poor bearing capability are reinforced to reach the specified bearing capability; then the asphalt concrete pavements to be repaired are repaired; combined-type cement concrete repaving surfacing and transition section repaving surfacing are paved, finally joint-cutting is carried out on the repaving surfacing, and the repairing of the pavement distresses is finished. The method can be used for road intersection asphalt concrete pavement sections with serious distresses of wheel ruts, upheavals, waves and the like, can improve driving safety and comfortableness at intersections effectively, achieves good durableness and economy of combined-type concrete repaving surfacing and prolongs the service life of pavements.
Description
Technical field
The invention belongs to road maintenance maintenance field, relate to a kind of pavement disease method for repairing and mending, be specially a kind of convolution concrete that adopts and add the method that asphalt concrete pavement disease is repaired in paving.
Background technology
Along with the effect of traffic loading and environmental load, the functional performance of asphalt concrete pavement degenerates gradually.Adopt the intersection of asphalt concrete pavement, rut, to gather around the disease that the plastic strain such as bag, wave produce particularly evident, these diseases be mainly frequent by car brakeing, channelization serious and bituminous concrete causes to cutting strength deficiency.Disease has a strong impact on the traffic safety of intersection place rainy day.Traditional change the generation that black top pavement patching method cannot fundamentally reduce rut disease, under hot environment, start frequently and brake and easily make flexible pavement produce rut and gather around the functional destructions such as bag.
Summary of the invention
The object of the invention is for above problem, provide a kind of convolution concrete that adopts to add the method that asphalt concrete pavement disease is repaired in paving, making to overlay in asphalt concrete pavement disease section convolution concrete adds behind paving, can effectively improve travel safety and comfortableness, there is good durability and economy, prolonging service life of pavement.
The invention provides a kind of convolution concrete that adopts and add the method that asphalt concrete pavement disease is repaired in paving, specifically comprise the following steps:
1) measure and evaluate old asphalt pavement supporting capacity, reinforcement is carried out in the undesirable road surface of supporting capacity and make it reach the bearing value of regulation;
2) asphalt concrete pavement to be repaired is cleared up in milling, is smooth, stable asphalt road table, guarantees that road surface is clean simultaneously;
3) asphalt concrete pavement for the treatment of repairing is laid convolution Concrete Overlay and changeover portion overlay, then on overlay, carries out joint-cutting, completes the repairing of road pavement disease.
In step 1), can adopt Falling Weight Deflectometer and/or power cone penetrometer to measure and evaluate old asphalt pavement supporting capacity.
When adopting power cone penetrometer to evaluate flexible pavement supporting capacity, concrete steps are as follows:
In step 1), by power, bore penetrometer and detect injection rate, obtain California Bearing Ratio CBR and elastic modulus E.
CBR?=?292/PR
1.12
E(MPa)?=?17.58×CBR
0.64
In formula, CBR is California Bearing Ratio, with %, represents; PR is the injection rate of power cone penetrometer test, with mm/ hammering time, represents.According to above formula, obtain E value.
The bearing value of described regulation need to meet following two conditions simultaneously:
A, road surface comprise at least 50mm asphalt surface course;
Groundwork thickness under b, flexible pavement is at least 150mm and its load intensity is greater than 345MPa.
For the road surface that can not meet above-mentioned two conditions simultaneously, adopt bituminous material to carry out reinforcement so that enough support forces to be provided to it.
Step 2) milling described in is cleared up when the asphalt concrete pavement of repairing, and is less than the disease road surface of 50mm, without carrying out milling for the rut degree of depth.The effect that milling will reach is: after milling existing flexible pavement surface without discrete aggregate, smooth, stable asphalt road table.
Described changeover portion is the part of the box-like Concrete Overlay of johning knot and normal flexible pavement.
The structure of the convolution cement concrete layer of described overlay is square face, and on four angles, sector notch is set, and described sector notch adopts radius method to prevent the appearance of acute angle plate while arranging, and maximization realizes plate angle angle and is greater than 90 degree, effectively prevents early disease.The structure that described square face and four angles are provided with sector notch is applicable to the disease of right-angled intersection very much repairs, and in addition, for different disease road surfaces, the planform of convolution Concrete Overlay also can be made corresponding adjustment.
For design axle, carry accumulative total and act on number of times lower than 8 * 10
6inferior road surface, the thickness of convolution Concrete Overlay is 100-180mm, and the thickness of changeover portion is 230mm, and length 7.2m is wide consistent with width of roadway.
It is laterally and vertically to cut out uniform joint-cutting at convolution Concrete Overlay and changeover portion overlay that described joint-cutting is processed, by joint-cutting, overlay is divided into the grid of several 1.8m*1.8m, the wide 9.5mm of being stitching earnestly, the degree of depth is 1/3 of overlay place, the place degree of depth, according to road surface situation, determines that joint-cutting is positioned at centre position, track.For example, the every lane width of urban road is 3.5 meters, and distribution lane every track in intersection is 2.3-2.5 rice, and joint-cutting is of a size of wide half in track.Avoid wagon flow wheel trace.
Described joint-cutting is processed after concrete adds paving and paved and is completed in 12 hours, the in the situation that of the limited time, must complete the joint-cutting of 3.6 * 3.6m in 12 hours; In 48 hours, complete the joint-cutting of 1.8m * 1.8m.
The present invention, by paving, joint-cutting being set and can effectively preventing the generation in random crack adding in advance, reduces to add the destroyed probability in paving.
Because cement concrete pavement has without rut disease and good anti-traffic loading performance, can improve the traffic safety of intersection.Convolution cement concrete adds paving as a kind of mode of repairing intersection flexible pavement, has two key characters of good durability and economy.It is closely related that convolution cement concrete adds the durability in paving and functional performance and following key factor: joint-cutting design and construction, roadbed supporting capacity and cement concrete add the bonding situation between paving and old asphalt pavement.
Whether the present invention adopts Falling Weight Deflectometer and/or power cone penetrometer to evaluate existing flexible pavement supporting capacity, determine in face of cement concrete overlays and need existing flexible pavement to carry out reinforcement processing.Before cement concrete adds pavement construction, clear up asphalt road surface, guarantee good bonding.Reasonably joint-cutting design, can effectively reduce the destruction that traffic loading and environmental load produce, and extends the application life that convolution cement concrete adds paving.
Meanwhile, method provided by the invention also tool have the following advantages:
1. by the supporting capacity on instrument energy accurate evaluation old asphalt concrete road surface, for the enough old asphalt pavements of bearing strength, without extra reinforcement; The rut degree of depth be less than 50mm without milling, can effectively save road repair cost.
2. pair old asphalt concrete road surfaces is thoroughly cleared up, and realizes the bonds well that convolution cement concrete adds paving and flexible pavement, can guarantee that cement concrete adds slab pressurized under action of traffic loading.
3. the cement concrete of 150mm adds paving and effectively reduces road surface thickness and build cost; Changeover portion adopts the cement concrete that thickness is 230mm can effectively prevent that road slab from moving the disease causing.
4. cement concrete adds joint-cutting is set on paving, and joint-cutting is located to the generation that disease can effectively be reduced in position, middle, track.
5. specially designed joint-cutting combination, width of slit, the joint-cutting degree of depth and lancing time section, effectively prevent the appearance of acute angle plate and early disease, extended the length of service that cement concrete adds paving.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is intersection convolution Concrete Overlay joint-cutting schematic diagram.
Fig. 2 is that radius method is processed the detailed drawing that adds paving breach.
Fig. 3 is kerf structure schematic diagram.
Fig. 4 is joint-cutting sequential schematic.
The specific embodiment
Below in conjunction with embodiment, further illustrate the present invention, but the scope of protection of present invention is not limited to the scope of embodiment statement.
While adopting convolution concrete to add paving to repair asphalt concrete pavement disease, be mainly divided into and carry out with the next stage:
First stage is for evaluating old asphalt concrete road surface situation, this one-phase be mainly adopt Falling Weight Deflectometer and/or/power cone penetrometer evaluates flexible pavement supporting capacity, determine whether to carry out reinforcement in advance, to guarantee the durability of the repairing method that the present invention proposes.
The bearing value of described regulation need to meet following two conditions simultaneously:
A, road surface comprise at least 50mm asphalt surface course;
Groundwork thickness under b, flexible pavement is at least 150mm and its load intensity is greater than 345MPa.
When if disease road surface can not meet above condition simultaneously, need to carry out reinforcement to reach the requirement of regulation by pitch.
As shown in Figure 1, second stage is that asphalt concrete pavement to be repaired is cleared up in milling, be smooth, stable asphalt road table, assurance road surface is clean, then lay convolution cement concrete and add paving 1, guarantee that old asphalt concrete road and convolution cement concrete add the bonds well in paving, lay changeover portion simultaneously; When laying convolution cement concrete adds the sector notch 2 in paving, adopt radius method to prevent the appearance of acute angle plate, as shown in Figure 2, wherein 4 is acute angle plate, and maximization realizes plate angle angle and is greater than 90 degree, can effectively prevent early disease; For design axle, carry accumulative total and act on number of times lower than the road surface of 8 * 106 times, the thickness of convolution Concrete Overlay is 150mm, and the thickness of changeover portion is 230mm, and length 7.2m is wide consistent with width of roadway.
Phase III is appropriate design and the construction of joint-cutting, and as shown in Figure 3, joint-cutting 3 is positioned at position, middle, track to the modular design schematic diagram of joint-cutting; The work progress of joint-cutting must complete in 12 hours after concrete speading completes, and the in the situation that of the limited time, must complete the joint-cutting 5 of 3.6 * 3.6m in 12 hours; In 48 hours, complete the joint-cutting 6 of 1.8m * 1.8m, can complete joint-cutting with reference to joint-cutting sequential schematic 4.
By aforesaid operations, complete the laying that convolution cement concrete adds paving, realize the repairing to asphalt concrete pavement disease, concrete adds pavement structure as shown in Figure 1.
Claims (10)
1. adopt convolution concrete to add the method that asphalt concrete pavement disease is repaired in paving, it is characterized in that: specifically comprise the following steps:
1) measure and evaluate old asphalt pavement supporting capacity, reinforcement is carried out in the undesirable road surface of supporting capacity and make it reach the bearing value of regulation;
2) asphalt concrete pavement to be repaired is cleared up in milling, is smooth, stable asphalt road table, guarantees that road surface is clean simultaneously;
3) asphalt concrete pavement for the treatment of repairing is laid convolution Concrete Overlay and changeover portion overlay, then on overlay, carries out joint-cutting, completes the repairing of road pavement disease.
2. method according to claim 1, is characterized in that: the bearing value of the regulation described in step 1) need to meet following two conditions simultaneously:
A, road surface comprise at least 50mm asphalt surface course;
Groundwork thickness under b, flexible pavement is at least 150mm and its load intensity is greater than 345MPa.
3. method according to claim 1, is characterized in that: during reinforcement described in step 1), adopt bituminous material existing flexible pavement to be overlayed to the support force that provides enough.
4. method according to claim 1, is characterized in that: step 2) described milling clears up when the asphalt concrete pavement of repairing, and is less than the disease road surface of 50mm, without carrying out milling for the rut degree of depth.
5. method according to claim 1, is characterized in that: described changeover portion is the part of the box-like Concrete Overlay of johning knot and normal flexible pavement.
6. method according to claim 1, it is characterized in that: the structure of the convolution cement concrete layer of described overlay is square face, and on four angles, sector notch is set, described sector notch adopts radius method to prevent the appearance of acute angle plate while arranging, maximization realizes plate angle angle and is greater than 90 degree, effectively prevents early disease.
7. according to the method one of claim 1-6 Suo Shu, it is characterized in that: for design axle, carry accumulative total and act on number of times lower than 8 * 10
6inferior road surface, the thickness of convolution Concrete Overlay is 100-180mm, and the thickness of changeover portion is 230mm, and length 7.2m is wide consistent with width of roadway.
8. according to the method one of claim 1-6 Suo Shu, it is characterized in that: it is laterally and vertically to cut out uniform joint-cutting at convolution Concrete Overlay and changeover portion overlay that described joint-cutting is processed, by joint-cutting, overlay is divided into the grid of several 1.8m*1.8m, the wide 9.5mm of being stitching earnestly, the degree of depth is 1/3 of overlay place, the place degree of depth, according to road surface situation, determines that joint-cutting is positioned at centre position, track.
9. method according to claim 8, is characterized in that: described joint-cutting is processed after concrete adds paving and paved and completed in 12 hours, the in the situation that of the limited time, must complete the joint-cutting of 3.6 * 3.6m in 12 hours; In 48 hours, complete the joint-cutting of 1.8m * 1.8m.
10. according to the method one of claim 1-6 Suo Shu, it is characterized in that: in step 1), adopt Falling Weight Deflectometer and/or power cone penetrometer to measure and evaluate old asphalt pavement supporting capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310515935.9A CN103526663B (en) | 2013-10-28 | 2013-10-28 | Convolution concrete is adopted to add the method for paving repairing asphalt concrete pavement disease |
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| CN201310515935.9A CN103526663B (en) | 2013-10-28 | 2013-10-28 | Convolution concrete is adopted to add the method for paving repairing asphalt concrete pavement disease |
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| CN103526663A true CN103526663A (en) | 2014-01-22 |
| CN103526663B CN103526663B (en) | 2015-08-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938514A (en) * | 2014-04-15 | 2014-07-23 | 南昌航空大学 | Concrete pavement oxide treatment structure and construction method thereof |
| CN107165017A (en) * | 2017-07-24 | 2017-09-15 | 上海市市政规划设计研究院 | The permanent composite pavement structure transformed for old asphalt pavement |
| CN108999048A (en) * | 2018-08-30 | 2018-12-14 | 广西交投科技有限公司 | Repair the convolution concrete blanket construction design method at intersection |
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| CN1932156A (en) * | 2006-09-26 | 2007-03-21 | 长安大学 | Asphalt road surface local damage immediate fast repairing method |
| CN101994284A (en) * | 2009-08-27 | 2011-03-30 | 王可权 | Method for repairing broken asphalt pavement |
| CN102758393A (en) * | 2012-08-06 | 2012-10-31 | 王新华 | Cement concrete pavement damage repairing method |
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2013
- 2013-10-28 CN CN201310515935.9A patent/CN103526663B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1932156A (en) * | 2006-09-26 | 2007-03-21 | 长安大学 | Asphalt road surface local damage immediate fast repairing method |
| CN101994284A (en) * | 2009-08-27 | 2011-03-30 | 王可权 | Method for repairing broken asphalt pavement |
| CN102758393A (en) * | 2012-08-06 | 2012-10-31 | 王新华 | Cement concrete pavement damage repairing method |
Non-Patent Citations (1)
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| 董鹏: "旧沥青路面上直接加铺水泥混凝土面层的应用研究", 《公路工程与运输》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938514A (en) * | 2014-04-15 | 2014-07-23 | 南昌航空大学 | Concrete pavement oxide treatment structure and construction method thereof |
| CN103938514B (en) * | 2014-04-15 | 2016-02-10 | 南昌航空大学 | A kind of cement pavement Darkening process structure and construction method |
| CN107165017A (en) * | 2017-07-24 | 2017-09-15 | 上海市市政规划设计研究院 | The permanent composite pavement structure transformed for old asphalt pavement |
| CN108999048A (en) * | 2018-08-30 | 2018-12-14 | 广西交投科技有限公司 | Repair the convolution concrete blanket construction design method at intersection |
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| CN103526663B (en) | 2015-08-05 |
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Granted publication date: 20150805 Termination date: 20211028 |