CN106948234A - A kind of novel thermoregulating asphalt pavement structure - Google Patents
A kind of novel thermoregulating asphalt pavement structure Download PDFInfo
- Publication number
- CN106948234A CN106948234A CN201710196200.2A CN201710196200A CN106948234A CN 106948234 A CN106948234 A CN 106948234A CN 201710196200 A CN201710196200 A CN 201710196200A CN 106948234 A CN106948234 A CN 106948234A
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- Prior art keywords
- asphalt
- thermal conductive
- heat
- pitch
- pavement
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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
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
- E01C7/262—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre with fibrous material, e.g. asbestos; with animal or vegetal admixtures, e.g. leather, cork
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to a kind of novel thermoregulating asphalt pavement structure, including thermal conductive asphalt upper layer and surface layer in heat soaked petroleum pitch.The asphalt uplayer is by mixing carbon fiber, graphite powder formation thermal conductive asphalt structure sheaf, and middle surface layer is by mixing the heat soaked petroleum pitch structure sheaf that vacuum-impregnated polyethylene glycol/expansion perlite composition material is formed.Advantage is：Pavement radiation is imported cutting optimal in pitch by thermal conductive asphalt structure sheaf, heat soaked petroleum pitch structure sheaf by composite it is solid-liquid phase becomes and absorbed heat, so that upper layer temperature reduction simultaneously in bituminous paving, pavement temperature field is adjusted, mitigates the generation of summer high temperature weather asphalt pavement rut disease while pavement performance is ensured and alleviates urban heat land effect.
Description
Technical field
The invention belongs to road engineering technical field, it is related to a kind of novel thermoregulating asphalt pavement structure, can effectively reduces road
Face temperature, mitigates road surface high temperature disease, reaches the effect for alleviating city " tropical island effect ".
Background technology
Bituminous paving is because having the advantages that surfacing seamless, driving are comfortable, noise is small, simple maintenance is extensive
Using in the existing 130,000 kilometers of highways of China, 90% above is bituminous paving.China's most area summer is hot, gas
Temperature can reach more than 35 DEG C, due to antiradar reflectivity of the bituminous paving to solar radiation, and road table temperature can reach 70 DEG C or so, a side
Face causes material at high temperature unstability so that a series of destructions occurs in road surface, and another aspect can also influence road periphery thermal environment, aggravate
City " tropical island effect ".
At present, pitch and asphalt are improved from modified pitch, structure design for reply Rutting damage both at home and abroad
High-temperature stability, but can not fundamentally solve the problems, such as rut.In recent years, there is a collection of new design concept, such as reflect
Type bituminous paving, conductive asphalt concrete, thermal resistance asphalt, phase transformation asphalt etc., pass through the calorifics of modified road
Property is to change asphalt temperature, but pavement performance, cost and durability are the key factors for restricting its development.How using newly
Type ground surface material, by reasonable combination, it is desirable to develop with low cost, excellent performance environmentally friendly asphalt pavement structure
The problem of solution.
The content of the invention
The purpose of the present invention is the deficiency existed for above-mentioned prior art, comprehensive to use thermal conductive asphalt compound and phase transformation
Asphalt is there is provided a kind of novel thermoregulating asphalt pavement structure, the middle upper layer position often occurred for rut, road surface knot
Structure upper layer by by inside heat guiding structure, to prevent middle surface layer accumulation of heat, being absorbed heat by composite phase-change material,
Bituminous paving bulk temperature is adjusted, reach reduces the effect of upper layer temperature in road surface simultaneously, can not only reduce summer high
Temperature destruction, can also effectively alleviate city " thermal conductivity effect ", save the energy.
To implement above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of novel thermoregulating asphalt pavement structure, it is characterised in that：Including face in thermal conductive asphalt upper layer and heat soaked petroleum pitch
Layer, the asphalt uplayer is by mixing carbon fiber, graphite powder formation thermal conductive asphalt structure sheaf, and middle surface layer is by mixing Vaccum Permeating
The heat soaked petroleum pitch structure sheaf of the polyethylene glycol of stain/expansion perlite composition material formation.
Preferably, the road surface is thermal conductive asphalt compound, wherein Carbon fiber dimension hplc is that asphalt is total
The 0.2% of quality, graphite powder volume is the 12%~18% of pitch volume fraction to substitute miberal powder.
Preferably, the road surface level matches somebody with somebody the thermal conductive asphalt concrete layer for nominal maximum particle diameter 13mm, general
In the basis proportioning of logical AC-13 asphalts, wherein the graphite quality mixed often increases 1g, bitumen content increase 0.5g.
Mixed and stirred preferably, the upper layer thermal conductive asphalt compound mix order is gathered materials for thickness with mixer after 90s
Carbon fiber mix 90s again is added, mix 90s after pitch is added, is eventually adding graphite powder and miberal powder, continues to mix and stir 90s, is made and leads
Hot asphalt mixture.
Preferably, surface layer is heat soaked petroleum pitch compound in the asphalt, gather wherein made from vacuum impregnation technology
Ethylene glycol/expanded perlite is to substitute half 0.15mm and 0.3mm grades of fine aggregate.
Preferably, middle surface layer level of the present invention matches somebody with somebody the heat soaked petroleum pitch concrete for nominal maximum particle diameter 13mm
Layer, in the basis proportioning of common AC-13 asphalts, directly by polyethylene glycol/expanded perlite to substitute half 0.15mm
With 0.3mm grades of fine aggregate.
Preferably, surface layer uses polyethylene glycol/expanded perlite in the present invention, it is swollen by polyethylene glycol and 100 purposes
Swollen perlite mixing, 90 DEG C of water-bath 0.5h vacuumized and cooled down after 1h, heat filtering 24h, levigate sieving is made.
Mixed and stirred preferably, the middle surface layer heat soaked petroleum pitch compound mix order is gathered materials for thickness with mixer after 90s
Composite phase-change material mix 90s again is added, mix 90s after pitch is added, is eventually adding miberal powder, continues to mix and stir 90s, heat absorption is made
Asphalt.
Preferably, upper layer is replaced in the basis proportioning of common AC-13 asphalts in temperature adjustment of the present invention
Gather materials gained for certain shelves, the mass percent of its plain asphalt compound for 37~46% coarse aggregate (4.75mm~
13.2mm), 43~51% fine aggregate (0.075mm~4.75mm), 5%~6% miberal powder and 4%~6% 70# matrix
Pitch.
After said structure, the invention has the advantages that compared with the prior art,：
Pavement radiation is imported cutting optimal in pitch by thermal conductive asphalt structure sheaf, and heat soaked petroleum pitch structure sheaf passes through composite
Absorbed heat Gu-liquid phase becomes so that upper layer temperature reduction simultaneously in bituminous paving, adjust pavement temperature field, used on guarantee road
Mitigate the generation of summer high temperature weather asphalt pavement rut disease while performance and alleviate urban heat land effect.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the specimen test casing figure of the present invention.
Embodiment
As described below is only presently preferred embodiments of the present invention, does not therefore limit protection scope of the present invention, with reference to
The present invention is further described for drawings and Examples.
The novel thermoregulating pavement structure includes thermal conductive asphalt upper layer 1 and surface layer 2, the asphalt uplayer in heat soaked petroleum pitch
1 by mixing carbon fiber, graphite powder formation thermal conductive asphalt structure sheaf, and middle surface layer 2 is by mixing vacuum-impregnated polyethylene glycol/swollen
The heat soaked petroleum pitch structure sheaf of swollen perlite composition material formation.
Embodiment 1
The mass percent of each volume of plain asphalt compound is determined in case the design of temperature adjusting structure layer, 42% coarse aggregate
(4.75mm~13.2mm), 47.5% fine aggregate (0.075mm~4.75mm), 5.7% miberal powder and 4.8% 70# bases
Matter pitch.
Polyethylene glycol/expanded perlite shaping phase-change material is prepared, is mixed by the expanded perlite of polyethylene glycol and 100 mesh
Close,
90 DEG C of water-bath 0.5h, vacuumize and cooled down after 1h, heat filtering 24h, levigate sieving for standby.
The design of surface layer in heat soaked petroleum pitch：Keep asphalt coarse aggregate, miberal powder and asphalt quality percentage constant, carefully
(0.075mm~4.75mm) quality of gathering materials is adjusted to 39.2%, and composite phase-change material is mixed than for 8.3%.
Middle surface layer specimen molding：Thickness, which gathers materials to be mixed and stirred with mixer, after preheating added after 90s composite phase-change material mix again
90s, adds mix 90s after pitch, is eventually adding miberal powder, continues to mix and stir 90s, and heat soaked petroleum pitch compound is made.
The design of thermal conductive asphalt upper layer：Keep asphalt thickness gather materials (0.075mm~13.2mm) quality not
Become, carbon fiber content is 0.2%, graphite powder volume is pitch volume fraction 18% to substitute miberal powder, is converted into mass fraction
For 2.2% graphite, 2.8% miberal powder and 5.9% pitch.
Novel thermoregulating asphalt pavement structure composite member upper surface compared with conventional pitch compound test specimen cools up to 4.3
DEG C,
Lower surface cools 3.4 DEG C.
Embodiment 2
The mass percent of each volume of plain asphalt compound is determined in case the design of temperature adjusting structure layer, 42% coarse aggregate
(4.75mm~13.2mm), 47.5% fine aggregate (0.075mm~4.75mm), 5.7% miberal powder and 4.8% 70# bases
Matter pitch.
Polyethylene glycol/expanded perlite shaping phase-change material is prepared, is mixed by the expanded perlite of polyethylene glycol and 100 mesh
Close,
90 DEG C of water-bath 0.5h, vacuumize and cooled down after 1h, heat filtering 24h, levigate sieving for standby.
The design of surface layer in heat soaked petroleum pitch：Keep asphalt coarse aggregate, miberal powder and asphalt quality percentage constant, carefully
(0.075mm~4.75mm) quality of gathering materials is adjusted to 42.2%, and composite phase-change material is mixed than for 5.3%.
Middle surface layer specimen molding：Thickness, which gathers materials to be mixed and stirred with mixer, after preheating added after 90s composite phase-change material mix again
90s, adds mix 90s after pitch, is eventually adding miberal powder, continues to mix and stir 90s, and heat soaked petroleum pitch compound is made.
The design of thermal conductive asphalt upper layer：Keep asphalt thickness gather materials (0.075mm~13.2mm) quality not
Become, carbon fiber content is 0.2%, graphite powder volume is pitch volume fraction 12% to substitute miberal powder, the graphite after conversion
It is 1.4% to measure fraction, and miberal powder is 3.9%, and pitch is 5.5%.
Novel thermoregulating asphalt pavement structure composite member upper surface compared with conventional pitch compound test specimen cools up to 3.6
DEG C, lower surface cools 2.5 DEG C.
Claims (7)
1. a kind of novel thermoregulating asphalt pavement structure, it is characterised in that：Including surface layer in thermal conductive asphalt upper layer and heat soaked petroleum pitch.
2. asphalt uplayer according to claim 1 is by mixing carbon fiber, graphite powder formation thermal conductive asphalt structure sheaf, in
Surface layer is by mixing the heat soaked petroleum pitch structure sheaf that vacuum-impregnated polyethylene glycol/expansion perlite composition material is formed.
3. thermal conductive asphalt compound according to claim 1 or 2, wherein Carbon fiber dimension hplc are asphalt gross mass
0.2%, graphite powder volume is the 12%~18% of pitch volume fraction to substitute miberal powder.
4. thermal conductive asphalt compound according to claim 1 or claim 2 is in the basis proportioning of common AC-13 asphalts, its
The graphite quality of middle incorporation often increases 1g, bitumen content increase 0.5g.
Add after 90s
Enter carbon fiber mix 90s again, add mix 90s after pitch, be eventually adding graphite powder and miberal powder, continue to mix and stir 90s, heat conduction is made
Asphalt.
6. heat soaked petroleum pitch compound according to claim 1 or 2, polyethylene glycol/expansion wherein made from vacuum impregnation technology
Perlite is to substitute half 0.15mm and 0.3mm grades of fine aggregate.
7. polyethylene glycol/expanded perlite according to claim 1 or 2, by polyethylene glycol and the expanded perlite of 100 mesh
Mixing, 90 DEG C of water-bath 0.5h vacuumized and cooled down after 1h, heat filtering 24h, obtained by levigate sieving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710196200.2A CN106948234A (en) | 2017-03-29 | 2017-03-29 | A kind of novel thermoregulating asphalt pavement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710196200.2A CN106948234A (en) | 2017-03-29 | 2017-03-29 | A kind of novel thermoregulating asphalt pavement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106948234A true CN106948234A (en) | 2017-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710196200.2A Pending CN106948234A (en) | 2017-03-29 | 2017-03-29 | A kind of novel thermoregulating asphalt pavement structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258234A (en) * | 2019-06-25 | 2019-09-20 | 杭州西公科技有限公司 | A kind of phase-change accumulation energy asphalt pavement structure |
| EP3553415A1 (en) | 2018-04-12 | 2019-10-16 | Commissariat à l'Energie Atomique et aux Energies Alternatives | Thermal regulation system |
| CN110499687A (en) * | 2019-09-03 | 2019-11-26 | 中南大学 | A kind of the bituminous pavement cooling structure and its layers of material composition of Rut resistance |
| CN111056769A (en) * | 2019-12-05 | 2020-04-24 | 维克碳纤维制品有限公司 | Carbon fiber asphalt mixture |
| CN114108415A (en) * | 2021-12-08 | 2022-03-01 | 武汉理工大学 | Double-layer phase-change temperature-adjusting asphalt pavement structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204212019U (en) * | 2014-09-11 | 2015-03-18 | 广西桂东高速公路有限公司 | Phase transformation cooling asphalt pavement structure |
-
2017
- 2017-03-29 CN CN201710196200.2A patent/CN106948234A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204212019U (en) * | 2014-09-11 | 2015-03-18 | 广西桂东高速公路有限公司 | Phase transformation cooling asphalt pavement structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3553415A1 (en) | 2018-04-12 | 2019-10-16 | Commissariat à l'Energie Atomique et aux Energies Alternatives | Thermal regulation system |
| CN110258234A (en) * | 2019-06-25 | 2019-09-20 | 杭州西公科技有限公司 | A kind of phase-change accumulation energy asphalt pavement structure |
| CN110499687A (en) * | 2019-09-03 | 2019-11-26 | 中南大学 | A kind of the bituminous pavement cooling structure and its layers of material composition of Rut resistance |
| CN111056769A (en) * | 2019-12-05 | 2020-04-24 | 维克碳纤维制品有限公司 | Carbon fiber asphalt mixture |
| CN114108415A (en) * | 2021-12-08 | 2022-03-01 | 武汉理工大学 | Double-layer phase-change temperature-adjusting asphalt pavement structure |
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Application publication date: 20170714 |