CN101275381A - Construction method for asphalt pavement interlayer thermal bonding - Google Patents

Construction method for asphalt pavement interlayer thermal bonding Download PDF

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Publication number
CN101275381A
CN101275381A CNA2008100238029A CN200810023802A CN101275381A CN 101275381 A CN101275381 A CN 101275381A CN A2008100238029 A CNA2008100238029 A CN A2008100238029A CN 200810023802 A CN200810023802 A CN 200810023802A CN 101275381 A CN101275381 A CN 101275381A
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CN
China
Prior art keywords
pavement
layer
construction
asphalt
heating
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Pending
Application number
CNA2008100238029A
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Chinese (zh)
Inventor
施伟斌
陈启景
张义甫
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YINGDA HEAT REGENERATION CO Ltd
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YINGDA HEAT REGENERATION CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by YINGDA HEAT REGENERATION CO Ltd filed Critical YINGDA HEAT REGENERATION CO Ltd
Priority to CNA2008100238029A priority Critical patent/CN101275381A/en
Publication of CN101275381A publication Critical patent/CN101275381A/en
Pending legal-status Critical Current

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Abstract

The inventive asphalt pavement interlayer thermal cementing construction method, whose construction technique steps include: a first step, firstly spreading the asphalt mixture on a first floor asphalt pavement, and compacting; a second step, heating the lower layer asphalt pavement until the asphalt on the pavement surface is melting, and then harrowing the melted asphalt pavement surface; a third step, spreading a layer by using the asphalt mixture, which allows the aggregate of the asphalt mixture between upper and lower layers to interleave and inosculate, eliminates the weak interface between these layers and greatly enhances the interlayer inosculating strength; compacting; repeating the second and third steps until each pavement construction is completed. The inventive asphalt pavement construction method enhances the interlayer inosculating strength of the asphalt pavement, resolves the interlayer tomography problem and prolongs the service life of the pavement.

Description

Construction method for asphalt pavement interlayer thermal bonding
Technical field
The present invention is a kind of process that is used for the bituminous pavement paving construction, belongs to the technical field of asphalt road surface construction technology.Specifically, be a kind of flexible pavement interlayer bonding construction technique.
Background technology
Upper, middle and lower-ranking is divided on conventional asphalt roads road surface, and every layer ground surface material is all different, therefore need the layering compacting that paves, the tradition technology that paves is that at first pave one deck and compacting are after after a while, before the last layer that paves, spray the pitch bonding agent in the following layer of surface that making is good, the last layer that paves then, this work progress can not guarantee the bond strength of each interlayer.After using in several years, interlayer occurs easily sliding and separates, and causes tomography, seriously shortens the application life of highway.
Traditional technology that paves is:
Bituminous pavement top generally is made up of the bituminous mixture of layer 2-3.According to the road design requirement, grading of aggregate and compacting requirement are all different in the paving thickness of every layer of bituminous concrete, the asphalt mixed soil.Because the batching plant can not produce the pitch of several gratings simultaneously, and the paver different bituminous mixture that can not disposable while layering paves, more crucial is the restriction of disposable compacting depth, so construction process must pave the pitch layering, compacting.Decide on engineering progress and environmental factor, every layer of bitumen layer time of paving may be separated by several days even a few week.Pave before every layer of bituminous mixture, must lower floor's cleaning surfaces is clean, and spray one deck pitch binder, and then the compacting that paves.
The tradition problem that technology exists that paves:
1, every layer of bitumen layer time of paving can be separated by several days even a few week.The surface retains moisture content, earth and rubbish easily during this time, and that these impurity all are difficult for fully removing is clean, influences the bonding of interlayer and in conjunction with effect.
2, sandstone dust etc. in the quality of cementing agent own, job practices, the air all causes interlaminar bonding power to can not get guaranteeing.
The middle temperature difference of layers of asphalt is big when 3, paving, and does not merge, and does not cause weak interface.
4, the grating of situation difference, each layer, temperature contraction or expansion rate are also different because the upper, middle and lower asphalt surface course is heated, and add that interlayer slides easily, produce tomography.
5, if when the drainage system of road surface waterproof poor performance or road can not meet the demands, moisture content can infiltrate in the middle of the tomography.
When 6, the moisture content that retains in interlayer is rolled by the bogie wheel repeatedly, form press water or expand the heavy damage road surface in freezed in winter.
Summary of the invention
Technical problem to be solved by this invention, be to overcome the defective that prior art exists, a kind of construction method for asphalt pavement interlayer thermal bonding and equipment are provided, in order to strengthen the fusion intensity between each layer of bituminous pavement top, solve interlayer tomography problem, prolong service life of road surface.
Construction method for asphalt pavement interlayer thermal bonding of the present invention, its construction technology step is:
Step 1, at first use bituminous mixture laying first floor flexible pavement, compacting;
Step 2, lower floor's flexible pavement is heated to the fusion of road crust pitch, again with the rake pine of the flexible pavement top layer after the fusion;
Step 3, use the bituminous mixture laying last layer more immediately, making that the aggregate of bituminous mixture is staggered between the aspect up and down merges, and eliminates the weak interface between each layer, engages intensity greatly between enhancement layer; Compacting;
Repeating step two, three is finished until road surface each layer construction.
Described step 2, lower floor's flexible pavement is heated to the fusion of road crust pitch, owing to need the pitch top layer of fusion that certain thickness will be arranged, be by to bitumen layer surface baking make heat progressively by surface seepage to inside, road surface, make inner pitch fusion, the heat time heating time that these needs are certain.Will make the pitch on surface be stuck with paste by roasting owing to the baking of long period like this, the forfeiture adhesion stress influences the bond effect between aspect.In order to overcome this defective, further improved technical scheme of the present invention is: adopt the method construction of heating for multiple times, that is: and heating, insulation, heating again is until finishing the fusion of road crust pitch.At first to lower floor's flexible pavement heating certain hour, to its insulation a period of time, make heat scatter infiltration gradually on the flexible pavement top layer then, road pavement heating again reaches the fusion requirement until road crust pitch.
For further improve between aspect in conjunction with effect, another improvement project of the inventive method is: before implementation step three, add pitch binder on the flexible pavement top layer of rake behind the pine; Also can be when the loose flexible pavement of rake top layer, the side drag slack list adds pitch binder.
Construction method for asphalt pavement interlayer thermal bonding of the present invention has following outstanding beneficial effect:
1, before the last layer flexible pavement that paves, the moisture content on underpavement surface is heated evaporation, can not retain moisture content between each surface layer of flexible pavement.
2, the underpavement bituminous mixture be heated softening after, remake an amount of rake pine and add pitch binder (also can not adding), the last layer that immediately paves, the weak interface that intermeshes and do not cause between two-layer, acquisition greater strength because of temperature contrast.
3, avoid or significantly reduced the generation that slides over each other between each surface layer of flexible pavement.
4, stop effectively that because of drainage system bad or pavement crack etc. causes moisture content to infiltrate the flexible pavement interlayer.
The inventive method also is applicable to the major repair and the innovation of all flexible pavements except that being applicable to newly-built road.
Description of drawings
Fig. 1 is the inventive method construction equipment sequence of construction schematic diagram;
Fig. 2 is the sheet pavement heating vehicle structural representation;
Fig. 3 is the loose bassinet structure schematic diagram of flexible pavement heating rake;
Fig. 4 is the new and old two kinds relatively schematic diagrames of technology that pave.
The specific embodiment
Below in conjunction with drawings and Examples, the inventive method is described in further detail.
Embodiment, employing construction method for asphalt pavement interlayer thermal bonding of the present invention, the construction flexible pavement.Flexible pavement is divided into tri-level construction.
---at first, on the roadbed that construction is finished, lay the first floor flexible pavement, with pitch batch mixing paver, road roller pave bituminous mixture and compacting according to conventional method.Before the second layer flexible pavement bituminous mixture that paves, earlier following one deck road surface is cleaned.
---look down the characteristics (type, grating, bitumen aggregate ratio etc.) and the environment temperature of one deck pavement asphalt compound, with 1 or several sheet pavement heating vehicle 1 earlier successively road pavement heat, as shown in Figure 1.Vehicle slowly travels on the road surface, and the speed of travelling was decided on the time of the heat tracing of setting.At this moment, be arranged at heating panel 1-1 and the warming plate 1-2 under the vehicle middle carriage and be arranged at the heating panel 1-3 of vehicle rear and warming plate 1-4 road pavement top layer heating successively, insulation.This process mainly is to make it be in molten to the surface on flexible pavement top layer and inner heating.
---heat, harrow pine, spray pitch binder (also can not spraying) immediately following 2 pairs of already heated flexible pavements of 1 flexible pavement heating loose car of rake subsequently.This vehicle slowly travels on the road surface immediately following the vehicle of front, and the speed of travelling was decided on the time of the heat tracing of setting.The heating panel 2-2 of this bottom, domain, car middle part, the heating of 2-3 road pavement top layer, the warming plate 2-4 road pavement top layer insulation between two heating panels.Because the asphalt surface behind the heating and melting can cool off, this process mainly is that heat on the surface of road pavement before the rake pine again, makes it be in molten.Therefore, heating panel will be lacked in the length of fore-and-aft direction than the heating panel of front sheet pavement heating vehicle 1.
Be arranged at the spike up apparatus 2-5 of this vehicle rear,, spray pitch binder (also can not spraying) along with the walking of vehicle road pavement rake pine immediately.Be arranged at the aftermost spreader 2-6 of this car will harrow the pine flexible pavement pave.
---and then carry out the paving of last layer road surface, compacting with material containing car 3, pitch batch mixing paver 4, road roller 5 according to traditional bituminous pavement paving technology.
---repeat above-mentioned steps 2,3,4, lay the 3rd layer of road surface.Construction finishes.
Sheet pavement heating vehicle 1 comprises vehicle frame 1-5, heating panel 1-2,1-3 and warming plate 1-2,1-4; Heating panel is horizontally placed on middle part and the vehicle rear below the vehicle frame, is horizontally disposed with warming plate in the back of each heating panel, and warming plate is selected sheet asbestos for use.The heating panel 1-1 at vehicle frame middle part and warming plate 1-2 can oscilaltion and left and right sides translations, during inoperative, are lifted at a high position, are convenient to vehicle '; During work, reduce to the road surface, be used for road pavement heating and insulation, left and right sides translation can be adjusted the position to the flexible pavement heat tracing.The heating panel 1-3 at vehicle frame rear portion and warming plate 1-4 can turn over and turn 90 degrees.During inoperative, turn to vertical state, and warming plate can also continue to turn over to turn 90 degrees, and is placed horizontally at vehicle roof.Like this can be so that vehicle '.During work, turn to horizontal and press close to the road surface, be used for road pavement heating and insulation.
The loose car 2 of flexible pavement heating rake, comprise vehicle frame 2-1, two heating panels (2-2,2-3), warming plate 2-4, spike up apparatus 2-5 and spreader 2-6.Two heating panels are horizontally placed on the middle part below the vehicle frame, are horizontally disposed with warming plate between two heating panels.Spike up apparatus places vehicle rear, and spreader places the back rear of spike up apparatus.Turning 90 degree of spike up apparatus and spreader; When inoperative, be turned into vertical shape, be convenient to vehicle '; During work, turn to horizontal.

Claims (3)

1, a kind of construction method for asphalt pavement interlayer thermal bonding, its construction technology step is:
Step 1, at first use bituminous mixture laying first floor flexible pavement, compacting;
Step 2, lower floor's flexible pavement is heated to the fusion of road crust pitch, again with the rake pine of the flexible pavement top layer after the fusion;
Step 3, use the bituminous mixture laying last layer more immediately, making that the aggregate of bituminous mixture is staggered between the aspect up and down merges, and eliminates the weak interface between each layer, engages intensity greatly between enhancement layer; Compacting;
Repeating step two, three is finished until road surface each layer construction.
2, construction method for asphalt pavement interlayer thermal bonding according to claim 1 is characterized in that: described step 2, lower floor's flexible pavement is heated to the fusion of road crust pitch, adopts the method for heating for multiple times, that is: heating, insulation, heating again is until finishing the fusion of road crust pitch.
3, construction method for asphalt pavement interlayer thermal bonding according to claim 1 and 2, it is characterized in that: before implementation step three, flexible pavement top layer behind the rake pine adds pitch binder, or when the loose flexible pavement of rake top layer, the side drag slack list adds pitch binder.
CNA2008100238029A 2008-04-15 2008-04-15 Construction method for asphalt pavement interlayer thermal bonding Pending CN101275381A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2008100238029A CN101275381A (en) 2008-04-15 2008-04-15 Construction method for asphalt pavement interlayer thermal bonding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2008100238029A CN101275381A (en) 2008-04-15 2008-04-15 Construction method for asphalt pavement interlayer thermal bonding

Publications (1)

Publication Number Publication Date
CN101275381A true CN101275381A (en) 2008-10-01

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Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103758004A (en) * 2013-12-17 2014-04-30 英达科技有限公司 Surface treatment method for base course of asphalt pavement
CN105887611A (en) * 2016-05-13 2016-08-24 重庆交通大学 Thin-layer overlay construction method for thermal remediation of asphalt disease pavement
CN110700062A (en) * 2019-10-25 2020-01-17 林立 Road repairing device and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103758004A (en) * 2013-12-17 2014-04-30 英达科技有限公司 Surface treatment method for base course of asphalt pavement
CN105887611A (en) * 2016-05-13 2016-08-24 重庆交通大学 Thin-layer overlay construction method for thermal remediation of asphalt disease pavement
CN110700062A (en) * 2019-10-25 2020-01-17 林立 Road repairing device and method

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Open date: 20081001