CN115029986A - Ultrathin overlay construction method - Google Patents
Ultrathin overlay construction method Download PDFInfo
- Publication number
- CN115029986A CN115029986A CN202210972049.8A CN202210972049A CN115029986A CN 115029986 A CN115029986 A CN 115029986A CN 202210972049 A CN202210972049 A CN 202210972049A CN 115029986 A CN115029986 A CN 115029986A
- Authority
- CN
- China
- Prior art keywords
- asphalt
- asphalt mixture
- mixture
- ultra
- construction method
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
- E01C7/353—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them with exclusively bituminous binders; Aggregate, fillers or other additives for application on or in the surface of toppings with exclusively bituminous binders, e.g. for roughening or clearing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The disclosure relates to the technical field of constructional engineering, in particular to a road repair and maintenance ultrathin overlay construction method. The method comprises the steps of raw material detection, design of mixing ratio, verification of mixing ratio, mixing of the mixture, transportation, paving, rolling and the like. The method adopts special grading design, so that the asphalt mixture and the base layer have better cohesiveness. The asphalt mixture has the advantages of high elastic modulus value, strong extension force and high tensile strength, reduces the low-temperature brittle fracture of the surface layer, can effectively inhibit the low-temperature shrinkage cracks of the asphalt pavement, and effectively avoids water damage. The asphalt bonding layer and the mixture cover surface are paved synchronously, ultra-thin synchronous paving within the thickness range of 0.8-2cm can be realized, the elevation of the pavement is not raised, and the influence of the cover surface on the stress of a bridge structure is avoided during bridge construction. And the synchronous paving can also reduce the construction time and improve the overall construction efficiency.
Description
Technical Field
The disclosure relates to the technical field of constructional engineering, in particular to a road repair and maintenance ultrathin overlay construction method.
Background
The ultrathin overlay is mainly applied to preventive maintenance of high-grade pavements and corrective maintenance of slight diseases (pitted surfaces, loose and track depth less than 1.5 cm), can also be used as a surface wearing layer of a newly-built road, is a pavement structure layer with the thickness of 1.5-2.5 cm, and is 1-2 cm less than that of a common asphalt pavement. The reduction of the thickness of the pavement not only can effectively save the construction cost, but also has the pavement performances of skid resistance, rutting resistance, abrasion resistance, water damage resistance, durability and the like which are even better than those of the common asphalt mixture.
The traditional ultrathin overlay technology generally adopts common modified asphalt, when the temperature of an asphalt pavement reaches the softening point of the asphalt, the strength of an asphalt mixture is reduced, the adhesive force with a base layer is reduced, and the phenomena of falling, rutting and the like easily occur on the pavement under the action of high-speed and heavy-load wheels. Meanwhile, the construction of the traditional process adhesive layer needs to be carried out separately from the paving of the pavement, the construction period can be prolonged, and the construction cost is increased.
Disclosure of Invention
In order to solve the technical problem, the present disclosure provides an ultra-thin overlay construction method.
The present disclosure provides a construction method of an ultrathin overlay, which comprises the following steps:
s10: performing raw material detection, and respectively performing quality detection on mineral aggregate and polymer high-viscosity asphalt, wherein the polymer high-viscosity asphalt is a mixture of natural asphalt serving as a matrix and a high molecular material, a tackifier and a modifier;
s20: designing the mix proportion of the asphalt mixture, wherein the oil-stone ratio range of the polymer high-viscosity asphalt and the mineral aggregate is 7.5-7.8%, and the grading range of the mineral aggregate meets the following requirements: when the mineral aggregate is sieved by sieves with 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm and 0.075mm sieve pores, the grading proportion of the mineral aggregate is 100; 40-85; 15-35; 8-25; 6-20; 5-15; 4-12; 3-8;
s30: verifying the mixing proportion of the asphalt mixture, carrying out trial mixing by using a small asphalt mixture mixer, and carrying out performance test on the trial mixed materials;
s40: stirring the asphalt mixture according to the mix proportion verified by the trial mixing;
s50: transporting the asphalt mixture, and transporting the stirred asphalt mixture to a construction site;
s60: paving the asphalt mixture, paving the asphalt mixture after treating the original pavement structure, and simultaneously spraying the viscous layer oil;
s70: and rolling the asphalt mixture, and compacting the paved asphalt mixture.
Optionally, the mineral aggregate comprises coarse aggregate, fine aggregate and mineral powder, the coarse aggregate and the fine aggregate are glauconite or basalt, and the mineral powder is limestone mineral powder or magma mineral powder.
Optionally, step S30 includes the following sub-steps:
s31: before mixing in a trial mode, checking an automatic metering system of the small asphalt mixture mixing machine;
s32: confirming the part installation state of the small asphalt mixture mixing machine;
s33: and (5) verifying the mixing proportion of the asphalt mixture by using a small asphalt mixture mixer.
Optionally, in step S50, the transportation vehicle is covered with an insulation layer to insulate the asphalt mixture.
Optionally, in step S60, the asphalt mixture is spread by a synchronous spreader.
Optionally, the spreading speed of the synchronous spreading machine is 8-15 m/min.
Optionally, in step S60, the temperature of the asphalt mixture ranges from 75 ℃ to 80 ℃.
Optionally, in step S60, the coating oil is modified emulsified asphalt, and the spreading amount of the coating oil is 0.8-1.0 kg/m 2.
Optionally, in step S70, the crushing speed is 8 km/h.
Optionally, after step S70, step S80 is further included: and (4) maintaining the pavement, namely performing water spraying maintenance on the compacted pavement for 1-3 days.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
the design method disclosed by the invention provides a construction method of an ultrathin cover surface. The method comprises the steps of raw material detection, design of mixing ratio, verification of mixing ratio, mixing of the mixture, transportation, paving, rolling and the like. The ultrathin asphalt mat surface obtained by the method has the following advantages:
1. the method adopts special grading design, so that the asphalt mixture and the base layer have better cohesiveness. The asphalt mixture has the advantages of high elastic modulus value, strong extension force and high tensile strength, reduces the low-temperature brittle fracture of the surface layer, can effectively inhibit the low-temperature shrinkage cracks of the asphalt pavement, and effectively avoids water damage.
2. The asphalt bonding layer and the mixture cover surface are paved synchronously, ultra-thin synchronous paving within the thickness range of 0.8-2cm can be realized, the elevation of the pavement is not raised, and the influence of the cover surface on the stress of a bridge structure is avoided during bridge construction. And the synchronous paving can also reduce the construction time and improve the overall construction efficiency.
3. Synthesize polymer hyperviscous pitch, oilstone ratio in this application and set up with synchronous paving, this application at first can make the viscous layer oil 100% act on whole paving face, makes bituminous paving's adhesive bonding ability obtain first step and strengthens, improves bituminous paving's fatigue life. And secondly, the setting of the polymer high-viscosity asphalt and the improvement of the oil-stone ratio can further improve the bonding capability of the asphalt pavement and improve the durability of the asphalt pavement. The combination of the anti-fatigue performance and the anti-rutting performance of the asphalt pavement can be improved to the greatest extent, and the problem that the asphalt pavement is easy to fall off and rutting is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a flow chart of an ultra-thin overlay construction method according to an embodiment of the disclosure;
FIG. 2 is a flow chart of the ultra-thin overlay construction method including substeps according to an embodiment of the present disclosure.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
The present disclosure provides an ultra-thin overlay construction method, including the following steps, the flow chart is shown in fig. 1 and fig. 2:
s10: and (3) detecting raw materials, and respectively detecting the quality of the mineral aggregate and the polymer high-viscosity asphalt, wherein the technical indexes are shown in table 1. The polymer high-viscosity asphalt is a mixture of natural asphalt as a matrix, a high molecular material, a tackifier and a modifier. The polymer high-viscosity asphalt effectively enhances the softening point and ductility of asphalt, has the characteristics of strong deformation following property, high elastic recovery rate, good anti-rutting performance, large complex modulus at 60 ℃ and the like, and the asphalt mixture mixed by the asphalt has the advantages of high elastic modulus value and strong extension force, can also improve the bonding capability and the anti-rutting capability of an ultrathin overlay, has the tensile strength far greater than the stress caused by temperature change, reduces the low-temperature brittle fracture of the overlay, can effectively inhibit the low-temperature shrinkage crack of the asphalt pavement, and effectively avoids water damage.
TABLE 1 technical index for raw material detection
S20: designing the mix proportion of the asphalt mixture, wherein the grading range of the mineral aggregate is shown in table 2 and meets the following requirements: when the mineral aggregate is sieved by sieves with 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm and 0.075mm sieve pores, the grading proportion of the mineral aggregate is 100; 40-85; 15-35; 8-25; 6-20; 5-15; 4-12; 3 to 8.
TABLE 2 mineral aggregate grading requirements
In this embodiment, the mineral aggregate includes coarse aggregate, fine aggregate, and mineral powder, the coarse aggregate and the fine aggregate are glauconite or basalt, and the mineral powder is limestone mineral powder or magma mineral powder. Through trial preparation, the particle size specifications of the coarse aggregate are 5-8 mm and 3-5 mm respectively; the fine aggregate is stone chips of 0-3 mm, and the aggregate is prepared by the following steps of: 3-5 mm: 0-3 mm mineral powder = 38: 30: 26: 6 as the initial mineral aggregate gradation of the ultrathin asphalt mixture. The initial mineral aggregates were then examined and the results are shown in table 3.
TABLE 3 initial mineral aggregate inspection summary sheet
The coarse and fine aggregates are made of clean and dry gravels which do not contain weathered particles and have hard stone quality and particles close to cubes, the gravels rolled by an impact crusher are selected, the stone quality is preferably made of hard stones such as glauconite or basalt, the technical indexes of the material quality are shown in table 1, and the requirements of table 1 must be met. In order to prevent material pollution, the construction site is covered according to requirements.
The mineral powder for the asphalt mixture is finely ground to obtain hydrophobic stones such as limestone or strong basic rocks in magma rocks, soil impurities in the stones are removed, the mineral powder is clean and dry and cannot be agglomerated, the mineral powder can freely flow out of a mineral powder bin, and the recovered powder cannot be used for replacing the mineral powder.
The oilstone ratio of the polymer high viscosity asphalt to the mineral aggregate ranges from 7.5% to 8.0%, and the oilstone ratio is initially determined to be 7.8%. The oilstone of the embodiment is relatively high, and the fatigue resistance of the road surface can be ensured. The service life of the asphalt pavement is greatly related to the asphalt content in the asphalt mixture, because the thickness of the asphalt coating film of the aggregates in the mixture is directly influenced by the amount of the asphalt, and under the condition that the asphalt-aggregate ratio is less than the optimal asphalt-aggregate ratio, the smaller the asphalt amount is, the smaller the thickness of the asphalt film is, so that the cohesive force among the aggregates is reduced, and the durability (fatigue life) of the asphalt pavement is influenced. Meanwhile, the use amount of asphalt is too low, the mixture is hard and loose and cannot be compacted, and the anti-rutting capability of the asphalt pavement is also influenced. And secondly, the asphalt pavement can be prevented from being damaged by water, and the smaller the asphalt dosage is, the smaller the binding force between aggregates in the mixture is under the condition that the oilstone ratio is smaller than the optimal oilstone ratio. Under the repeated action of pore water pressure, the asphalt surface layer leads the asphalt film to be peeled off from the aggregate surface and the originally small adhesive force between the aggregates to be gradually lost until the aggregates are loosened, thus causing pitted surface and loosening; at the local loose part, loose aggregate particles gradually fall off and run off to form pits with different sizes. Moreover, the asphalt in this example is also a polymer high-viscosity asphalt, which can further improve the bonding ability.
S30: and verifying the mixing proportion of the asphalt mixture, and performing test mixing by using a small asphalt mixture mixer to test the performance of the test mixture. The method comprises the relevant detection of four-point bending test, Marshall stability and flow value test, Kendeberg flying test, rutting test and the like. The four-point bending test is a test method for measuring the bending performance of a material. The marshall test is a test to determine the optimum oilstone ratio of the asphalt mix. The Kendeberg scattering test is used for evaluating the degree of scattering of aggregate on the surface of the pavement due to the falling off of the aggregate under the action of traffic load due to insufficient asphalt using amount or viscosity. The main purpose of the rut test is to evaluate the high temperature stability of the asphalt mixture. The test performance results of the test mixes are shown in tables 4 and 5.
TABLE 4 test results of asphalt mixture performance detection
TABLE 5 Marshall test results for bituminous mixtures
As can be seen from tables 4 and 5, the porosity, the rut dynamic stability, the four-point bending fatigue, the Kentucky scattering test loss test and the Marshall test performed using the mix ratios of the test mixes all meet the technical requirements.
The step S30 further includes the following sub-steps:
s31: before mixing in a trial mode, an automatic metering system of the small asphalt mixture mixing machine is checked, and metering accuracy is guaranteed.
S32: and confirming the part installation state of the small asphalt mixture mixer. The method comprises the steps of confirming that an automatic protection device of the mixing machine, sensors of all parts, a detection instrument line and an electric appliance are correctly connected, and installing the mixing blade and a mixing cylinder part are in normal states.
S33: and (5) verifying the mixing proportion of the asphalt mixture by using a small asphalt mixture mixer. Moreover, the mix ratio must not be changed arbitrarily after confirmation.
S40: and (5) stirring the asphalt mixture according to the mix proportion verified by the trial mixing. In the process, the oilstone ratio and the outlet temperature of the asphalt mixture need to be detected at any time. The specific control temperature requirements are shown in table 6.
TABLE 6 construction temperature control requirements
S50: and (5) transporting the asphalt mixture, and transporting the stirred asphalt mixture to a construction site.
In this step, the transportation vehicle is covered with a heat-insulating layer to insulate the asphalt mixture. The transport vehicle may use a large dump truck to transport the asphalt mixture to the paving site. The heat preservation layer adopts two layers, from bottom to top, is respectively a tarpaulin and a quilt, and prevents rain and heat from being radiated too fast to become waste materials.
S60: paving the asphalt mixture, paving the asphalt mixture after treating the original pavement structure, and simultaneously spraying the viscous layer oil. The asphalt bonding layer and the mixture overlay are synchronously paved, and the basic effect is to reduce the construction time and improve the overall construction efficiency. And secondly, the problem of interlayer bonding can be solved by synchronous paving, the sprayed asphalt mixture is prevented from being stuck by wheels, interlayer bonding of the ultrathin cover surface is ensured, the bonding oil acts on the whole paving surface by 100%, and the bonding capacity of the asphalt pavement is improved.
The method comprises the steps of preprocessing local diseases of a base layer before paving, and respectively processing different diseases by adopting schemes of crack pouring, plate changing, grouting, connection between reinforcing plates and the like. Before additional paving, the pavement is required to be clean and free of mud and other impurities.
The temperature range of the asphalt mixture is 75-80 ℃. The emulsified asphalt is heated to 75-85 ℃ and then can be added into a paver. The heating tank (vehicle) should be heated slowly. The heating process is circulated, so as to accelerate heat exchange and avoid emulsion breaking of the emulsified asphalt at local high temperature.
And paving the asphalt mixture by using a synchronous paver. The synchronous paver is a construction machine for synchronously paving an asphalt bonding layer and a mixture overlay, is a mature technology, and does not need to be described in detail herein.
In the embodiment, the spreading speed of the synchronous spreader is 8-15 m/min.
The adhesive layer oil is modified emulsified asphalt, and the spreading amount of the adhesive layer oil is 0.8kg/m 2-1.0 kg/m 2.
S70: and rolling the asphalt mixture, and compacting the paved asphalt mixture.
In step S70, the crushing speed was 8 km/h. In the specific construction process, a double-steel-wheel road roller with 12 tons can be used for static pressure twice, and the light is collected and leveled. Then, because the thin-layer asphalt mixture is quickly cooled, the thin-layer asphalt mixture must be rolled in time, the road roller follows the paver with the non-stick wheel as the standard, the compaction frequency can be adjusted according to the actual situation on site, stone crushing is avoided, and the road surface is prevented from whitening.
In the present embodiment, after step S70, step S80 is further included: and (4) maintaining the pavement, namely performing water spraying maintenance on the compacted pavement for 1-3 days. During maintenance, vehicles cannot drive into the road surface, and the influence of marks on the road surface on the flatness is prevented.
From the above embodiments, firstly, the construction method includes the steps of raw material detection, design of the mixing ratio, verification of the mixing ratio, mixing of the mixture, transportation, paving, rolling and the like. And a special grading design is adopted, so that the asphalt mixture and the base layer have better cohesiveness. The asphalt mixture has the advantages of high elastic modulus value, strong extension force and high tensile strength, reduces the low-temperature brittle fracture of the surface layer, can effectively inhibit the low-temperature shrinkage cracks of the asphalt pavement, and effectively avoids water damage.
And secondly, the asphalt bonding layer and the mixture cover surface are synchronously paved, so that ultra-thin synchronous paving within the thickness range of 0.8-2cm can be realized, the elevation of the pavement is not raised, and the influence of the cover surface on the stress of the bridge structure during bridge construction is avoided. And the synchronous paving can also reduce the construction time and improve the overall construction efficiency.
Moreover, synthesize polymer hyperviscous pitch, oilstone ratio setting and synchronous paving setting in this application, this application can make the viscous layer oil 100% act on whole paving face at first, makes bituminous paving's bonding ability obtain first step and strengthens, improves bituminous paving's fatigue life. And secondly, the improvement of the oil-stone ratio and the application of the polymer high-viscosity asphalt can further improve the bonding capability of the asphalt pavement and improve the durability of the asphalt pavement. The combination of the asphalt and the asphalt can improve the fatigue resistance and the rutting resistance of the asphalt pavement to the maximum extent.
Finally, the construction method does not need to carry out galling treatment on the base layer, and reduces noise and dust pollution when the base layer is treated.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The previous description is only for the purpose of describing particular embodiments of the present disclosure, so as to enable those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The construction method of the ultrathin cover is characterized by comprising the following steps of:
s10: performing raw material detection, and respectively performing quality detection on mineral aggregate and polymer high-viscosity asphalt, wherein the polymer high-viscosity asphalt is a mixture of natural asphalt serving as a matrix, a high molecular material, a tackifier and a modifier;
s20: designing the mix proportion of the asphalt mixture, wherein the oil-stone ratio range of the polymer high-viscosity asphalt and the mineral aggregate is 7.5-7.8%, and the grading range of the mineral aggregate meets the following requirements: when the ore materials are sieved by sieves with 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm and 0.075mm sieve pores, the grading proportion of the ore materials is 100; 40-85; 15-35; 8-25; 6-20; 5-15; 4-12; 3-8;
s30: verifying the mixing proportion of the asphalt mixture, carrying out trial mixing by using a small asphalt mixture mixer, and carrying out performance test on the trial mixed materials;
s40: stirring the asphalt mixture according to the mix proportion verified by trial mixing;
s50: transporting the asphalt mixture, and transporting the stirred asphalt mixture to a construction site;
s60: paving the asphalt mixture, paving the asphalt mixture after treating the original pavement structure, and simultaneously spraying viscous layer oil;
s70: and rolling the asphalt mixture, and compacting the paved asphalt mixture.
2. The ultra-thin overlay construction method of claim 1 wherein the mineral aggregate comprises coarse aggregate, fine aggregate and mineral fines, the coarse aggregate and the fine aggregate being glauconite or basalt, the mineral fines being limestone mineral fines or magma mineral fines.
3. An ultra-thin finishing construction method according to claim 1, characterized in that said step S30 includes the following sub-steps:
s31: before mixing in a trial mode, checking an automatic metering system of the small asphalt mixture mixing machine;
s32: confirming the installation state of parts of the small asphalt mixture mixing machine;
s33: and (5) verifying the mixing proportion of the asphalt mixture by using a small asphalt mixture mixer.
4. The ultra-thin overlay construction method of claim 1, wherein the transportation vehicle is covered with an insulation layer to insulate the asphalt mixture in step S50.
5. The ultra-thin overlay construction method of claim 1, wherein the asphalt mixture is spread by a synchronous spreader in step S60.
6. The ultra-thin overlay construction method of claim 5, wherein the paving speed of the synchronous paver is 8m/min to 15 m/min.
7. The ultra-thin overlay construction method of claim 1, wherein the asphalt mixture temperature ranges from 75 ℃ to 80 ℃ in step S60.
8. The method of claim 1, wherein the coating oil is modified emulsified asphalt and is spread in an amount of 0.8 to 1.0kg/m2 in step S60.
9. The ultra-thin overlay construction method of claim 1, wherein the rolling speed is 8km/h in step S70.
10. The ultra-thin finishing method of claim 1, further comprising, after the step S70, a step S80: and (4) maintaining the pavement, namely performing water spraying maintenance on the compacted pavement for 1 to 3 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210972049.8A CN115029986A (en) | 2022-08-15 | 2022-08-15 | Ultrathin overlay construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210972049.8A CN115029986A (en) | 2022-08-15 | 2022-08-15 | Ultrathin overlay construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115029986A true CN115029986A (en) | 2022-09-09 |
Family
ID=83131009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210972049.8A Pending CN115029986A (en) | 2022-08-15 | 2022-08-15 | Ultrathin overlay construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115029986A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140245925A1 (en) * | 2011-10-17 | 2014-09-04 | Research Institute Of Highway, Mot, Prc | Mix composition determination method of coarse graded high modulus asphalt concrete with skeleton embedded structure |
| CN104294732A (en) * | 2014-10-20 | 2015-01-21 | 广东华盟路桥工程有限公司 | High-elasto-viscosity stress absorbing layer and top facing construction process thereof |
| CN105350421A (en) * | 2015-09-28 | 2016-02-24 | 北京城建道桥建设集团有限公司 | Thin layer overlaying surface construction method suitable for pavement overhaul and intermediate maintenance and preventive conservation |
| CN109054409A (en) * | 2018-06-25 | 2018-12-21 | 重庆交通大学 | A kind of viscous micro- cover construction method of formula special asphalt of interlayer height |
| CN112661443A (en) * | 2021-01-15 | 2021-04-16 | 广东华路交通科技有限公司 | High-performance economical asphalt mixture and construction method thereof |
-
2022
- 2022-08-15 CN CN202210972049.8A patent/CN115029986A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140245925A1 (en) * | 2011-10-17 | 2014-09-04 | Research Institute Of Highway, Mot, Prc | Mix composition determination method of coarse graded high modulus asphalt concrete with skeleton embedded structure |
| CN104294732A (en) * | 2014-10-20 | 2015-01-21 | 广东华盟路桥工程有限公司 | High-elasto-viscosity stress absorbing layer and top facing construction process thereof |
| CN105350421A (en) * | 2015-09-28 | 2016-02-24 | 北京城建道桥建设集团有限公司 | Thin layer overlaying surface construction method suitable for pavement overhaul and intermediate maintenance and preventive conservation |
| CN109054409A (en) * | 2018-06-25 | 2018-12-21 | 重庆交通大学 | A kind of viscous micro- cover construction method of formula special asphalt of interlayer height |
| CN112661443A (en) * | 2021-01-15 | 2021-04-16 | 广东华路交通科技有限公司 | High-performance economical asphalt mixture and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6599057B2 (en) | Cold in-place recycling of bituminous material | |
| CN101885870B (en) | High-viscosity thin-layer bituminous mixture modifier and application thereof | |
| CN108221560B (en) | Construction process of rubber powder modified asphalt pavement | |
| Putman | Evaluation of open-graded friction courses: construction, maintenance, and performance | |
| US9528000B2 (en) | Hot-mix asphalt paving mixture | |
| CN100575424C (en) | Rebuild the method for bituminous-surfaced pavement | |
| CN104762863A (en) | Bituminous mixture used for thin layer overlay of cement concrete pavement and preparation and construction methods of bituminous mixture | |
| EP2350199A1 (en) | Fiber modified layer and methods of making and using same | |
| CA2734875A1 (en) | Composition and process of using an asphalt emulsion to convert an unpaved surface into a paved surface | |
| Amirkhanian | Utilization of crumb rubber in asphaltic concrete mixtures–South Carolina’s Experience | |
| CN101736675B (en) | Forming method of cold regeneration upper substrates on damaged pavement and cold regeneration material combined structure | |
| CN104594151A (en) | Water drainage anti-cracking type cold-recycling pavement structure | |
| CN107165018A (en) | A kind of simple grain footpath asphalt macadam ultra-thin wearing layer and preparation method thereof | |
| KR20100012226A (en) | Recycling asphalt concrete using cold recycled asphalt pavement by hot mixing method with hot mixture asphlt | |
| US20110305820A1 (en) | Fiber modified layer and methods of making and using same | |
| Jacobson et al. | Cold recycling of asphalt pavement-mix in plant | |
| CN114180886B (en) | Self-adhesive asphalt concrete and preparation method and construction process thereof | |
| CN115029986A (en) | Ultrathin overlay construction method | |
| EP2781493A2 (en) | Bituminous composition and use thereof for reducing vibrations and noise | |
| US7312262B2 (en) | Methods and compositions for microsurfacing | |
| CN115045154A (en) | Cold-mixed cold-paved ultrathin asphalt wearing layer and preparation method thereof | |
| CN114772979A (en) | High-performance ultrathin asphalt wearing layer and paving method thereof | |
| CN111153632A (en) | Fine-grain type semi-open graded asphalt mixture and mix proportion design method thereof | |
| Bashkoul et al. | Evaluate the use of recycled asphalt pavement (RAP) in the construction of roller compacted concret pavement (RCC) | |
| CN102433836A (en) | Composite material for repairing epoxy asphalt paved pothole and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220909 |