CN101713173B - Method for recovering clearance of porous asphalt pavement - Google Patents
Method for recovering clearance of porous asphalt pavement Download PDFInfo
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- CN101713173B CN101713173B CN2009102186790A CN200910218679A CN101713173B CN 101713173 B CN101713173 B CN 101713173B CN 2009102186790 A CN2009102186790 A CN 2009102186790A CN 200910218679 A CN200910218679 A CN 200910218679A CN 101713173 B CN101713173 B CN 101713173B
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- asphalt pavement
- porous asphalt
- clearance
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- cleaning
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Abstract
The invention relates to a method for recovering a clearance of a porous asphalt pavement, which comprises the following steps of: carrying out dust-absorption treatment to pollutants in the asphalt pavement clearance, preparing a cleaning solution, flushing a porous asphalt pavement with high-pressure cleaning solution, and the like. A great deal of researches and experiments show that the method can effectively recover the clearance of the porous asphalt pavement, improve the water permeability and various pavement performances of the porous asphalt pavement and prolong the service time of the porous asphalt pavement. The invention can be used for cleaning clearance blockage of the porous asphalt pavement.
Description
Technical field
The invention belongs to squirt or not moistening of the surface know refuse technical field on road or the similar road surface, be specifically related to a kind of method of recovering clearance of porous asphalt pavement.
Technical background
At present, asphalt pavement structure not only will be resisted the repeat function of traffic load, and to satisfy the surface of good function, porous asphalt pavement can provide the surface of good characteristic, as waterproof float, reduce water smoke and dazzle, minimizing dabble, reduce noise, improve wet weather and evening pavement strip visibility, improve moist road surface skid resistance, improve the driving safety on road surface etc., so porous asphalt pavement must become the trend of flexible pavement development from now on.And these performances of porous asphalt pavement have direct or indirect relation with void content.When void content reduces behind certain value, these performances will reduce even disappear significantly.Therefore, the recovering clearance of porous asphalt pavement seems most important.
For the research of recovering clearance of porous asphalt pavement, begin both at home and abroad all than later.1997, in the European meeting that Jansen R., van de Ven C.J. hold in Madrid a kind of method of cleaning porous asphalt pavement has been proposed about porous asphalt.2000, the method that Tan S.A., Fwa T.F.and Guwe Y.K. have proposed test room's test and divided the analyzing porous asphalt mixture gap blocking mechanism.
Foreign study thinks that the clearance of porous asphalt pavement obstruction mainly contains ambient dust, doughnut rubber powder, organic matter (greasy dirt, chemical dust) etc.The scholar who has has carried out chemical composition analysis to the dirt that gathers in the space, wherein contains a certain amount of heavy metal.For particular locations such as freeway toll station, petrol filling stations, because vehicle flowrate is big, floating dust dirt is many, vehicle water clock machine oil, brake wet goods that vehicle condition is bad, when adding the vehicle parking starting, the fuel oil imperfect combustion contains a large amount of harmful solid particles in the discharge tail gas, these materials accumulate on the road surface, also can form one deck greasy dirt dirt.It is the most serious to studies show that the road surface layer stops up; The track is more serious than express lane chocking-up degree at a slow speed; The road surface stopping state is more serious than the wheel place's road surface stopping state that travels between wheel.Space cleaning is generally at laying of roadway after 1 year, and the suggestion cleaning is carried out behind rain, and rainwater can play infiltrations, emollescence to stopping up dust etc., thereby can reduce the intensity of cleaning, the raising cleaning effect.
NUS has proposed a kind of laboratory testing method and has simulated the obstruction of flexible pavement space, they with local soil as plugging material, with tap infiltration instrument test seepage of water, test result shows, index variation is generally followed in infiltrative minimizing, when stopping up generation, show the constant variation rate.But they lose authenticity for the simulation that clearance of porous asphalt pavement stops up, and selecting of obstruction is too single, does not only have rubber powder but also do not have organic matter, does not also consider the influence of obstruction process high temperature.Japan proposes a kind of cleaning principle, cleans the road surface with the high-pressure flush principle, and effect is better.But many for domestic dust, it is limited that particle reaches the more road surface effect of greasy dirt more greatly.
Summary of the invention
Technical problem to be solved by this invention is to overcome the shortcoming of above-mentioned recovering clearance of porous asphalt pavement method, and a kind of reasonable in design, method simple, that recover the good recovering clearance of porous asphalt pavement of back bituminous pavement property of constructing is provided.
Addressing the above problem the technical scheme that is adopted is made up of following step:
1, the pollutant in the clearance of porous asphalt pavement being carried out dust suction handles
With dust catcher to the porous asphalt pavement dust suction after stopping up 15～20 seconds.
Above-mentioned dust catcher is that model is that FC8202, vacuum are 21 dust catcher, is produced by PHILIPS company.
2, preparation cleaning fluid
Cleaning agent is added in the entry, and the addition of cleaning agent is 2%～8% of a water quality, stirs, and forms foam, is prepared into cleaning fluid.
Above-mentioned cleaning agent is that model is the environment-friendly type road surface scavenger specially that the road cleaning agent of QW-917 or the orange energetically multifunction detergent of tortoise board that model is G-438 or model are CX-328, model is that the road cleaning agent of QW-917 is by the limited production of the strange waffle worker in Guangzhou, model is that the orange energetically multifunction detergent of the tortoise board of G-438 is produced by U.S. tortoise board Shenzhen Co., Ltd, and model is that the environment-friendly type road surface scavenger specially of CX-328 is developed by South China Science ﹠ Engineering University.
3, wash porous asphalt pavement with high-pressure cleaning liquid
Spray into porous asphalt pavement 15～25 seconds after the dust suction with the cleaning fluid of cold water jetting machine 3～7MPa pressure, intermittently 10 minutes, again with the high-pressure cleaning liquid flushing porous asphalt pavement bath of cold water jetting machine 8～12MPa 25～35 seconds.
In preparation cleaning fluid step 2 of the present invention, the optimal addn of cleaning agent be water quality 4%.Wash in the porous asphalt pavement step 3 with high-pressure cleaning liquid of the present invention, spray into porous asphalt pavement 20 seconds after the dust suction with the cleaning fluid of the best 5MPa pressure of cold water jetting machine, intermittently 10 minutes, washed by water 30 seconds with the high-pressure cleaning liquid flushing porous asphalt pavement of the best 10MPa of cold water jetting machine again.
The present invention is through a large amount of research and test, and the result shows, adopts said method to carry out recovering clearance to porous asphalt pavement effectively, improves the seepage of water and the various pavement performance of porous asphalt pavement, prolongs the service time of porous asphalt pavement.The present invention can be used for cleaning clearance of porous asphalt pavement and stops up.
The specific embodiment
Embodiment 1
It is as follows to be with preparation cleaning fluid water 100kg that example is cleaned the method step of recovering clearance of porous asphalt pavement:
1, the foreign material in the clearance of porous asphalt pavement being carried out dust suction handles
To the foreign material dust suction of stopping up in the clearance of porous asphalt pavement 15～20 seconds, the vacuum of dust catcher was 21 with dust catcher.
2, preparation cleaning fluid
With the 4kg model is in the road cleaning agent adding 100kg water of QW-917, stirs, and forms foam, is prepared into cleaning fluid.
3, wash porous asphalt pavement with high-pressure cleaning liquid
Spray into porous asphalt pavement 20 seconds after the dust suction with the cleaning fluid of cold water jetting machine 5MPa pressure, intermittently 10 minutes, again with the high-pressure cleaning liquid flushing porous asphalt pavement bath of cold water jetting machine 10MPa 30 seconds.
Embodiment 2
It is as follows to be with preparation cleaning fluid water 100kg that example is cleaned the method step of recovering clearance of porous asphalt pavement:
In preparation cleaning fluid step 2, be in the road cleaning agent adding 100kg water of QW-917 with the 2kg model, stir, form foam, be prepared into cleaning fluid.In with high-pressure cleaning liquid flushing porous asphalt pavement step 3, spray into porous asphalt pavement 15 seconds after the dust suction with the cleaning fluid of cold water jetting machine 3MPa pressure, intermittently 10 minutes, washed by water 25 seconds with the high-pressure cleaning liquid flushing porous asphalt pavement of cold water jetting machine 8MPa again.Other steps are identical with embodiment 1.
Embodiment 3
It is as follows to be with preparation cleaning fluid water 100kg that example is cleaned the method step of recovering clearance of porous asphalt pavement:
In preparation cleaning fluid step 2, be in the road cleaning agent adding 100kg water of QW-917 with the 8kg model, stir, form foam, be prepared into cleaning fluid.In with high-pressure cleaning liquid flushing porous asphalt pavement step 3, spray into porous asphalt pavement 25 seconds after the dust suction with the cleaning fluid of cold water jetting machine 7MPa pressure, intermittently 10 minutes, washed by water 35 seconds with the high-pressure cleaning liquid flushing porous asphalt pavement of cold water jetting machine 12MPa again.Other steps are identical with embodiment 1.
Embodiment 4
It is as follows to be with preparation cleaning fluid water 100kg that example is cleaned the method step of recovering clearance of porous asphalt pavement:
In above embodiment 1～3, used model is that the model of quality such as to use be that the environment-friendly type road surface scavenger specially of CX-328 is replaced to the road cleaning agent of QW-917.Other steps are identical with respective embodiments.
Embodiment 5
It is as follows to be with preparation cleaning fluid water 100kg that example is cleaned the method step of recovering clearance of porous asphalt pavement:
In above embodiment 1～3, used model be the road cleaning agent of QW-917 the model of quality such as to use be that the orange energetically multifunction detergent of tortoise board of G-438 is replaced, other steps are identical with respective embodiments.
In order to determine optimization procedure of the present invention, the inventor has carried out a large amount of development tests, and various test situation are as follows:
1, preparation porous asphalt mixture test specimen
To be that thick type is intensive join for the space stopping state of porous asphalt pavement in experiment lab simulation highway, design grating, and nominal maximum aggregate size is 13.2mm, and void content is 20%.Adopt gathering materials of Xi'an to Hanzhong speedway the 9th bid section use, JTG E42-2005 detects according to Ministry of Communications's ministry standard " highway engineering gather materials testing regulation ", every index all meets the demands, adopting TPS modifier addition is 12% TPS modified bitumen of asphalt quality, JTG052-2000 detects according to Ministry of Communications's ministry standard " highway engineering pitch and bituminous mixture testing regulation ", and every index all meets the demands.According to 12 of the T0703-1993 specimen molding method moulding porous asphalt mixture test specimens among the ministry standard JTJ052-2000 of Ministry of Communications " highway engineering pitch and bituminous mixture testing regulation ", sample dimensions is 300 * 300 * 50cm
3, to health demoulding after 48 hours under the test specimen normal temperature of moulding, test specimen is divided into four groups, every group of 3 test specimens.
Adopt infiltration instrument in HD-II type road surface to measure the infiltration time of the porous asphalt mixture test specimen of preparation.Result of the test sees Table 1.
2, the space of porous asphalt pavement is stopped up in the simulation highway
(1) preparation obstruction
Get clay 2.4kg, sand 1.2kg, diesel oil 0.12kg, gasoline 0.2kg, wood chip 0.08kg, the mass ratio of clay and sand, diesel oil, gasoline and wood chip is 6: 3: 0.3: 0.5: 0.2, mix, mix is even, light, get ashes 3.24kg, rubber grain 0.288kg, machine oil 0.072kg after the burning, the mass ratio of ashes and rubber grain, machine oil is to mix at 9: 0.8: 0.2, be prepared into obstruction 3.6kg, standby.
(2) stop up test specimen
The 3.6kg obstruction is divided into 12 parts, every part of 0.3kg.Get the 0.3kg obstruction and be added in the 2.5L water, stir, average mark is flushed to for three times on 1 test specimen equably, remains 11 test specimens and operates equally.12 test specimens after stopping up are placed the 60C insulating box, be incubated 48 hours, pitch is for the adhesive attraction of foreign matter during simulation high temperature.
(3) measure the infiltration time
Adopt the infiltration time after infiltration instrument in HD-II type road surface is measured the blocked thing obstruction of porous asphalt mixture test specimen.Result of the test sees Table 1.
3, the recovering clearance of porous asphalt pavement in the simulation highway
The A scheme: to the porous asphalt mixture test specimen dust suction after stopping up 15 seconds, the water under high pressure with 10MPa dashed 30 seconds again, cleaned with dust catcher.
The B scheme: the high pressure with 10MPa was washed by water 30 seconds to the porous asphalt mixture test specimen after stopping up, and cleaned, and used the dust catcher dust suction again 15 seconds.
The C scheme: with dust catcher to the porous asphalt mixture test specimen dust suction after stopping up 15 seconds, with model is that the road cleaning agent of QW-917 adds in the entry, model is that the addition of the road cleaning agent of QW-917 is 4% of a water quality, stir, form foam, it is sprayed in the test specimen after the dust suction 10 minutes intermittences with the pressure of 5MPa, water under high pressure with 10MPa dashed 30 seconds, cleaned.
The D scheme: with model is that the road cleaning agent of QW-917 adds in the entry, model be the addition of the road cleaning agent of QW-917 be water quality 4%, stir, form foam, with the pressure of 5MPa it is sprayed in the porous asphalt mixture test specimen after the obstruction, intermittently 10 minutes, dashed 30 seconds with the water under high pressure of 10MPa, clean, with dust catcher dust suction 15 seconds.
Order according to A～D is carried out recovering clearance to first group, second group, the 3rd group, the 4th group porous asphalt test specimen that stops up successively, adopts infiltration instrument in HD-II type road surface to measure the infiltration time, and result of the test sees Table 1.
The infiltration time of the different test specimens of table 1
By table 1 as seen, after employing A, B, four kinds of schemes of C, D were recovered the clearance of porous asphalt pavement that stops up, the infiltration time obviously shortened, and the infiltration time of scheme C is the shortest, illustrates that the cleaning performance of scheme C obviously is better than the cleaning performance of option A, B, D.Selection scheme C of the present invention recovers clearance of porous asphalt pavement.
Claims (2)
1. the method for a recovering clearance of porous asphalt pavement is characterized in that it is made up of following step:
(1) pollutant in the clearance of porous asphalt pavement being carried out dust suction handles
With dust catcher to the porous asphalt pavement dust suction after stopping up 15～20 seconds;
(2) preparation cleaning fluid
Cleaning agent is added in the entry, and the addition of cleaning agent is 2%～8% of a water quality, stirs, and forms foam, is prepared into cleaning fluid;
Above-mentioned cleaning agent is that model is the environment-friendly type road surface scavenger specially that the road cleaning agent of QW-917 or the orange energetically multifunction detergent of tortoise board that model is G-438 or model are CX-328;
(3) wash porous asphalt pavement with high-pressure cleaning liquid
Spray into porous asphalt pavement 15～25 seconds after the dust suction with the cleaning fluid of cold water jetting machine 3～7MPa pressure, intermittently 10 minutes, use the high pressure water washing porous asphalt pavement 25～35 seconds of cold water jetting machine 8～12MPa again.
2. according to the method for the described recovering clearance of porous asphalt pavement of claim 1, it is characterized in that: in preparation cleaning fluid step 2, the addition of cleaning agent be water quality 4%; In with high-pressure cleaning liquid flushing porous asphalt pavement step 3, spray into porous asphalt pavement 20 seconds after the dust suction with the cleaning fluid of cold water jetting machine 5MPa pressure, intermittently 10 minutes, use the high pressure water washing porous asphalt pavement 30 seconds of cold water jetting machine 10MPa again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009102186790A CN101713173B (en) | 2009-10-29 | 2009-10-29 | Method for recovering clearance of porous asphalt pavement |
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| CN2009102186790A CN101713173B (en) | 2009-10-29 | 2009-10-29 | Method for recovering clearance of porous asphalt pavement |
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| CN101713173A CN101713173A (en) | 2010-05-26 |
| CN101713173B true CN101713173B (en) | 2011-05-11 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253188B (en) * | 2011-07-21 | 2014-02-19 | 长安大学 | Method for determining anti-clogging performance of porous asphalt mixture |
| CN108999131A (en) * | 2017-06-06 | 2018-12-14 | 南京工业大学 | A kind of blocking pervious concrete pavement original position water penetration recovery device and restoration methods based on reverse flow flushing |
| CN107677799B (en) * | 2017-08-21 | 2019-12-13 | 河海大学 | Method and device for blocking pores of porous asphalt mixture |
| CN111088117B (en) * | 2019-12-30 | 2021-04-23 | 吉林大学 | Permeable asphalt pavement cleaning agent and preparation method thereof |
| CN111335234A (en) * | 2020-03-10 | 2020-06-26 | 中南林业科技大学 | Method for restoring gaps of porous asphalt pavement |
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