CN105731884B - A kind of asphalt for alleviating urban heat land effect and preparation method thereof - Google Patents
A kind of asphalt for alleviating urban heat land effect and preparation method thereof Download PDFInfo
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- CN105731884B CN105731884B CN201610081843.8A CN201610081843A CN105731884B CN 105731884 B CN105731884 B CN 105731884B CN 201610081843 A CN201610081843 A CN 201610081843A CN 105731884 B CN105731884 B CN 105731884B
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- asphalt
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- 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
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- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to asphalt technical field, more particularly to a kind of asphalt for alleviating urban heat land effect and preparation method thereof.Nano-glass modified pitch that the present invention is provided and be with the asphalt prepared by it using discarded glass be that raw material is made nano-glass, it is modified in addition matrix pitch, make matrix pitch that there is insulation, it is heat-insulated, reduce the characteristic of road surface heat absorption capacity, it is mixed and made into asphalt with gathering materials for rational gradation composition, the resistance to flaking of asphalt is improved using calcium hydroxide, ensure its pavement performance stabilization while the heat insulation performance of nano-glass asphalt is improved, its summer is set to reduce road surface heat absorption capacity, reduce the heat of transmission downwards, winter keeps pavement temperature to reduce the dissipation of heat energy, the target of bituminous paving bulk temperature is reduced so as to reach, discarded glass garbage disposal can so be solved the problems, such as, its heat preservation and insulation can be played again alleviates urban heat land effect.
Description
Technical field
The present invention relates to asphalt technical field, more particularly to a kind of asphalt for alleviating urban heat land effect
And preparation method thereof.
Background technology
At present, the urban heat land effect (Urban Heat Island Effect) in domestic many cities is very prominent
Go out, increasingly become one of problem that urban development has to solve, urban road as city underlying surface important composition portion
Point, with thermal capacity it is high, thermal conductivity is big the characteristics of, and daytime is low to the reflectivity of sunshine, heat absorption rate is big, therefore city table
Face temperature is far above countryside temperature.Bituminous paving is widely applied as the main paving form of China's urban road, this road surface
Structure causes summer city continuous high temperature, exacerbates urban heat land effect.In recent years, a large amount of road research workers also attempted to lead to
Crossing the design of optimization road structure and material composition carries out improving road surface thermophysical property, reaches the effect for reducing urban pavement temperature
Really.
A kind of acrylic resin sun-heat reflecting coating is disclosed early in license in 2002, authorizes within 2006 a kind of new
Type solar heat reflection paint preparation method, makes heat-insulated and reflection technology obtain very big development.Cao Xue is beautiful et al. to test surface
SMA the and OGFC bitumen mixture specimen temperature of the special reflective coating of road is scribbled, 5~10 DEG C of temperature, the cooling of OGFC is reduced
Effect is better than SMA.Sweden, Norway large-scale popularization application and are taken using the hot-resistant heat-preserving function of foam glass in road construction
Obtained extraordinary effect.
Nano-glass has good thermal and insulating performance, and the liquid glass film summer made by nano-glass can stop
The sun direct projection heat of 75%-88% gets in, so as to reduce indoor temperature；Winter then prevents indoor heat from distributing outflow.
Additionally, mixing many cullet in having substantial amounts of discarded glass, particularly municipal refuse in the rubbish of countries in the world daily.
The life that substantial amounts of glass rubbish gives people brings inconvenience, while land occupation, pollutes environment, waste of resource.
The content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention is to solve that existing road material heat capacity is high, thermal conductivity big, and daytime pair
The reflectivity of sunshine is low, heat absorption rate is big and scrap glass land occupation, pollutes environment, the problem of waste of resource.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides a kind of asphalt for alleviating urban heat land effect, its
It is characterised by：Raw material containing following mass parts, 4.5~5 parts of nano-glass modified pitch, miberal powder 0.09 in 1000 parts of compounds
~0.1 part, gather materials 94.9~95.41 parts.
Preferably, the utilization particle diameter is that the glass microsphere of 7~13nm is modified to matrix pitch, obtains nano-glass
Modified pitch, the glass microsphere from 7~13nm has light weight, low heat conduction, intensity higher, good chemical stability etc. excellent
Point, its surface has oleophyllie hydrophobic performance by specially treated, is very easy to be scattered in organic material system.
Preferably, the glass microsphere accounts for the 3~5% of nano-glass modified pitch gross mass, and appropriate glass microballoon is accounted for
The amount of having is effectively increased the overall stability of its compound, generally, when this compound is applied to pavement structure, Ke Yizeng
Plus the inside absorption affinity of compound.
Preferably, the matrix pitch is SK-70# matrix pitches.
Preferably, the miberal powder is slaked lime powder, in the case that water consumption is constant, concrete can be made to enter mould in fluidised form shape,
The abrasion of the concrete pump housing, pipeline and mould is reduced, extends its service life.
Preferably, described to gather materials be basalt, and its elongated particles≤10%, crush values≤23%, Los Angeles abrasion are damaged
Lose≤24%.
Preferably, the level gathered materials is with satisfaction：Respectively through sieve aperture 26.5,19,16,13.2,9.5,4.75,2.36,
When 0.075 mm sieve is sieved, its percent of pass corresponds to 100%, 95%~97%, 78%~85%, 68%~74%, 50%
~54%, 30%~35%, 16%~20%, 4%~6%.
Preferably, the raw material containing following mass parts, nano-glass modified pitch 4.5~5 in 1000 parts of compounds
Part, 0.09~0.1 part of miberal powder gathers materials 94.9~95.41 parts, and the miberal powder is slaked lime powder, and described to gather materials be basalt, described
Matrix pitch is SK-70# matrix pitches.
A kind of system of the asphalt that can alleviate urban heat land effect described in any one of claim 1 claim
Preparation Method, by nano-glass modified pitch with gather materials, slaked lime powder mix obtain asphalt.
Preferably, the step of preparing nano-glass modified pitch is as follows；
(1) glass microsphere of the particle size range at 7~13 nanometers is prepared；
(2) nano-glass is well mixed with matrix pitch, matrix pitch is modified；
(3) beneficial effect
Above-mentioned technical proposal of the invention has the following advantages that：Nano-glass modified pitch and use its institute that the present invention is provided
The asphalt of preparation is, for raw material is made nano-glass, matrix pitch to be changed in addition pitch using discarded glass
Property, make matrix pitch that there is insulation, characteristic that is heat-insulated, reducing road surface heat absorption capacity, it is mixed into system with gathering materials for rational gradation composition
Into asphalt, the resistance to flaking of asphalt is improved using calcium hydroxide, improving nano-glass asphalt
Ensure its pavement performance stabilization while heat insulation performance, its summer is reduced road surface heat absorption capacity, reduce and pass downwards
The heat passed, winter keeps pavement temperature to reduce the dissipation of heat energy, and the target of bituminous paving bulk temperature is reduced so as to reach, this
Sample can solve the problems, such as discarded glass garbage disposal, its heat preservation and insulation can be played again and alleviates urban heat land effect.
Brief description of the drawings
The step of Fig. 1 is the preparation method of the asphalt that the embodiment of the present invention alleviates urban heat land effect schematic diagram.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
Embodiment one
The asphalt of the present embodiment be by 48g modified pitch, slaked lime powder 0.95g and 951.05g gather materials mixing and
Into.
The modified pitch of the present embodiment is by the dopen Nano glass microsphere in matrix pitch, using nano-glass microballoon
Matrix pitch is modified, wherein matrix pitch uses SK-70# matrix pitches, its property indices (such as needle penetration, prolong
Degree, softening point etc.) should all meet by test《Highway engineering is gathered materials testing regulations》(JTG E42-2005) is required, matrix pitch
It is 46.08g, accounts for the 96% of modified pitch total amount.Glass microsphere is 1.92g, accounts for the 4% of modified pitch total amount, its particle diameter be 7~
13nm。
The above-mentioned level gathered materials is with satisfaction：Respectively through the milli of sieve aperture 26.5,19,16,13.2,9.5,4.75,2.36,0.075
During rice huller screen screening, its percent of pass corresponds to 100%, 96%, 82%, 71%, 52%, 33%, 18%, 5%, and it is from profound
Wu Yan, its elongated particles≤10%, crush values≤23%, Los Angeles abrasion loss≤24% should all meet by test《It is public
Road engineering is gathered materials testing regulations》(JTG E42-2005) is required.
The asphalt of the present embodiment is to prepare by the following method：
(1) discarded glass is prepared into glass microsphere of the particle size range in 7~13nm according to conventional nano processing technology；
(2) nano-glass is well mixed with matrix pitch according to formula ratio, matrix pitch is modified；
(3) by the modified pitch of step (2) with gather materials, slaked lime powder according to formula ratio mix 15min, obtain pitch
Compound.
Embodiment two
It is by 45g modified pitch, slaked lime powder 0.9g that the present embodiment turns to asphalt with respect to the change in embodiment one
Gather materials with 952.6g and mix.
The modified pitch of the present embodiment is by the dopen Nano glass microsphere in matrix pitch, using nano-glass microballoon
Matrix pitch is modified, wherein matrix pitch is 43.65g, accounts for the 97% of modified pitch total amount, it is using SK-70# bases
Matter pitch, its property indices (such as needle penetration, ductility, softening point) should all meet by test《Highway engineering is gathered materials examination
Test code》(JTG E42-2005) is required；Glass microsphere is 1.35g, accounts for the 3% of modified pitch total amount, its particle size range is 7~
13nm。
The above-mentioned level gathered materials is with satisfaction：Respectively through the milli of sieve aperture 26.5,19,16,13.2,9.5,4.75,2.36,0.075
During rice huller screen screening, its percent of pass corresponds to 100%, 95%, 78%, 68%, 50%, 30%, 16%, 4%, and it is from profound
Wu Yan, its elongated particles≤10%, crush values≤23%, Los Angeles abrasion loss≤24% should all meet by test《It is public
Road engineering is gathered materials testing regulations》(JTG E42-2005) is required.
Its preparation method is same as Example 1.
Embodiment three
The present embodiment with respect to the change in embodiment one turn to asphalt be by 50g modified pitch, slaked lime powder 1g and
949g gathers materials and mixes.
The modified pitch of the present embodiment is by the dopen Nano glass microsphere in matrix pitch, using nano-glass microballoon
Matrix pitch is modified, wherein matrix pitch is 47.5g, accounts for the 95% of modified pitch total amount, be also using SK-70# bases
Matter pitch.Glass microsphere is 2.5g, accounts for the 5% of modified pitch total amount, and its particle size range is 8~11nm.
The above-mentioned level gathered materials is with satisfaction：Respectively through the milli of sieve aperture 26.5,19,16,13.2,9.5,4.75,2.36,0.075
During rice huller screen screening, its percent of pass corresponds to 100%, 97%, 85%, 74%, 54%, 35%, 20%, 6%, and it is from profound
Wu Yan, its elongated particles≤10%, crush values≤23%, Los Angeles abrasion loss≤24% should all meet by test《It is public
Road engineering is gathered materials testing regulations》(JTG E42-2005) is required.
Its preparation method is same as Example 1.
Example IV
It is by 47g modified pitch, slaked lime powder 0.92g that the present embodiment turns to asphalt with respect to the change in embodiment one
Gather materials with 952.08g and mix.
The modified pitch of the present embodiment is by the dopen Nano glass microsphere in matrix pitch, using nano-glass microballoon
Matrix pitch is modified, wherein matrix pitch is 45.355g, accounts for the 96.5% of modified pitch total amount, be also to use SK-
70# matrix pitches.Glass microsphere is 1.645g, accounts for the 3.5% of modified pitch total amount, and its particle size range is 9~12nm.
The above-mentioned level gathered materials is with satisfaction：Respectively through the milli of sieve aperture 26.5,19,16,13.2,9.5,4.75,2.36,0.075
During rice huller screen screening, its percent of pass corresponds to 100%, 96%, 80%, 70%, 53%, 31%, 19%, 4%, and it is from profound
Wu Yan, its elongated particles≤10%, crush values≤23%, Los Angeles abrasion loss≤24% should all meet by test《It is public
Road engineering is gathered materials testing regulations》(JTG E42-2005) is required.
Its preparation method is same as Example 1.
In order to verify the beneficial effect of modified pitch of the invention and asphalt, now enter by taking following experiments as an example
Row explanation.
50g nano-glass volumes are respectively 3%, 4%, 5% modified pitch and the performance of the common matrix pitches of 50g
It is compared, experimental result is referring to table 1~4.
Table 1 is matrix pitch test result
Table 2 is the modified pitch test result of embodiment two
Table 3 is the modified pitch test result of embodiment one
Table 4 is the modified pitch test result of embodiment three
Be can be seen that by the comparing result of above-mentioned table 1~4：When matrix pitch mixes 3%, 4%, 5% nano-glass system respectively
During standby modified pitch, property indices are satisfied by code requirement, and needle penetration has obvious ascendant trend, illustrate to be received in incorporation
The denseness of matrix pitch has increased after rice glass, and corresponding penetration index also has the increase of certain amplitude, and temperature is sensitive
Property reduce, elasticity and thixotropy increased；Softening point also has elevated trend with the increase of nano-glass volume, and
Highest when volume is 4%, illustrates that the addition of nano-glass improves the high-temperature stability of matrix pitch, and with 4% volume as most
It is good；Kinematic viscosity is continuously increased with nano-glass volume increase, illustrates the addition of nano-glass and can to a certain extent improve matrix
The viscosity of pitch；In addition, moreover it is possible to find out that ductility is not obvious with the increase change of nano-glass volume, illustrate nano-glass pair
The influence of pitch cryogenic property is not obvious；Test data can learn that the addition of nano-glass improves to a certain extent in conclusive table
The pavement performance of matrix pitch.
Table 5 respectively using the modified pitch of 3%, 4%, 5% nano-glass volume as binder, according to the mixed of embodiment 1
It is the die trial of 25 × 25 × 10cm that material is closed with when preparation process manufactured size, will be placed in die trial before the forming size be 25 ×
The cushion block of 25 × 2cm, then spreads paving fines at the planar central of cushion block, and temperature sensor is placed in into fines top；Then, press
It is fitted into die trial according to by asphalt, rolls 28 times, shaping obtains the test specimen of 25 × 25 × 8cm；
The nano-glass asphalt of different depth size is obtained by being embedded in the temperature sensor inside compound
Temperature, characterize nano-glass asphalt thermal and insulating performance.
The different nano-glass addition content temperature test results of table 5
From the test result of table 5 it will be seen that when nano-glass volume be respectively 3%, 4%, 5% when, nanometer glass
The heat absorption rate of glass asphalt is decreased obviously, and when nano-glass volume is 4%, effect of heat insulation is optimal, illustrates nanometer
Asphalt prepared by glass-modified pitch can effectively alleviate urban heat land effect.
In sum, the present invention is provided nano-glass modified pitch and be using useless with the asphalt prepared by it
Old glass is made nano-glass for raw material, adds and matrix pitch is modified in pitch, make matrix pitch have insulation, every
Heat, reduce road surface heat absorption capacity characteristic, it is mixed and made into asphalt with gathering materials for rational gradation composition, using calcium hydroxide come
The resistance to flaking of asphalt is improved, its road is ensured while the heat insulation performance of nano-glass asphalt is improved
With stable performance, its summer is reduced road surface heat absorption capacity, reduce the heat of transmission downwards, winter keeps pavement temperature to subtract
The dissipation of few heat energy, the target of bituminous paving bulk temperature is reduced so as to reach, and can so solve discarded glass garbage disposal
Problem, can play its heat preservation and insulation and alleviate urban heat land effect again.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
Modified with to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (9)
1. it is a kind of alleviate urban heat land effect asphalt, it is characterised in that：Contain following quality in 1000 parts of compounds
The raw material of part, 4.5~5 parts of nano-glass modified pitch, 0.09~0.1 part of miberal powder gathers materials 94.9~95.41 parts；
Matrix pitch is modified using the glass microsphere with oleophyllie hydrophobic performance that particle diameter is 7~13nm, obtains nanometer
Glass-modified pitch.
2. it is according to claim 1 alleviate urban heat land effect asphalt, it is characterised in that：The glass microsphere
Account for the 3~5% of nano-glass modified pitch gross mass.
3. it is according to claim 1 alleviate urban heat land effect asphalt, it is characterised in that：The matrix pitch
It is SK-70# matrix pitches.
4. it is according to claim 1 alleviate urban heat land effect asphalt, it is characterised in that：The miberal powder is to disappear
Pulverized limestone.
5. it is according to claim 1 alleviate urban heat land effect asphalt, it is characterised in that：It is described to gather materials for profound
Wu Yan, its elongated particles≤10%, crush values≤23%, Los Angeles abrasion loss≤24%.
6. the asphalt of urban heat land effect is alleviated according to claim 1 or 5, it is characterised in that：It is described to gather materials
Level with meet：When being sieved respectively through the mm sieve of sieve aperture 26.5,19,16,13.2,9.5,4.75,2.36,0.075, it leads to
The rate of mistake corresponds to 100%, 95%~97%, 78%~85%, 68%~74%, 50%~54%, 30%~35%, 16%~
20%th, 4%~6%.
7. the asphalt of the alleviation urban heat land effect according to claim any one of 1-5, it is characterised in that：It is described
Raw material containing following mass parts in 1000 parts of compounds, 4.5~5 parts of nano-glass modified pitch, 0.09~0.1 part of miberal powder,
Gather materials 94.9~95.41 parts, the miberal powder is slaked lime powder, and described to gather materials be basalt, the matrix pitch is SK-70# bases
Matter pitch.
8. the preparation method of the asphalt that can alleviate urban heat land effect described in a kind of any one of claim 1~7,
It is characterized in that：By nano-glass modified pitch with gather materials, slaked lime powder mix obtain asphalt.
9. it is according to claim 8 alleviate urban heat land effect asphalt preparation method, it is characterised in that：System
The step of standby nano-glass modified pitch, is as follows；
(1) glass microsphere of the particle size range at 7~13 nanometers is prepared；
(2) nano-glass is well mixed with matrix pitch, matrix pitch is modified.
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| CN201610081843.8A CN105731884B (en) | 2016-02-05 | 2016-02-05 | A kind of asphalt for alleviating urban heat land effect and preparation method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107399930A (en) * | 2017-07-27 | 2017-11-28 | 四川宝利沥青有限公司 | The composite type modified pitch of strong bonding for rigid pavement |
| CN108083687A (en) * | 2017-12-04 | 2018-05-29 | 四川航天五源复合材料有限公司 | For the asphalt on road surface |
| CN110482907A (en) * | 2017-12-26 | 2019-11-22 | 郑州辉兴生物科技有限公司 | A kind of visual pitch of height that can preferably prevent scald |
| CN116553885A (en) * | 2023-04-21 | 2023-08-08 | 山东省高速养护集团有限公司 | Emulsified asphalt cold-recycling mixture and preparation method and application thereof |
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| CN102408728A (en) * | 2010-09-25 | 2012-04-11 | 上海彤路道路工程有限公司 | Novel colored asphalt cement and preparation method thereof |
| CN104761185A (en) * | 2015-04-01 | 2015-07-08 | 苏交科集团股份有限公司 | Low-cost asphalt mixture |
| CN104844071A (en) * | 2014-02-13 | 2015-08-19 | 江苏天一机场专用设备有限公司 | Manufacturing method of bituminous mixture for constructing airport road |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408728A (en) * | 2010-09-25 | 2012-04-11 | 上海彤路道路工程有限公司 | Novel colored asphalt cement and preparation method thereof |
| CN104844071A (en) * | 2014-02-13 | 2015-08-19 | 江苏天一机场专用设备有限公司 | Manufacturing method of bituminous mixture for constructing airport road |
| CN104761185A (en) * | 2015-04-01 | 2015-07-08 | 苏交科集团股份有限公司 | Low-cost asphalt mixture |
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