CN102587247A - Antifreezing bituminous pavement - Google Patents
Antifreezing bituminous pavement Download PDFInfo
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- CN102587247A CN102587247A CN2012100571386A CN201210057138A CN102587247A CN 102587247 A CN102587247 A CN 102587247A CN 2012100571386 A CN2012100571386 A CN 2012100571386A CN 201210057138 A CN201210057138 A CN 201210057138A CN 102587247 A CN102587247 A CN 102587247A
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- temperature
- freeze
- proof
- bituminous
- antifreezing
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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
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention relates to an antifreezing bituminous pavement and a laying method of the antifreezing bituminous pavement. The laying method of the antifreezing bituminous pavement comprises the following steps of 1, preparing a warm-mix antifreezing bituminous binding material, 2 preparing a warm-mix antifreezing bituminous mixed material, and 3, carrying out paving and compaction of the antifreezing bituminous pavement, wherein the step 1 comprises stirring 2 to 5 parts by weight of a Sasobit warm-mix agent and 85 to 95 parts by weight of common bitumen 90 at a temperature of 100 to 120 DEG C by a shear emulsifier at a rotate speed of 200 to 400RPM for 30 to 50 minutes to obtain a bituminous binding material and stirring the bituminous binding material and hydrophobic expanded pearlite at a temperature of 90 to 130 DEG C by a shear emulsifier at a rotate speed of 2000 to 5000RPM for 40 to 50 minutes to obtain the warm-mix antifreezing bituminous binding material. Accumulated snow on the surface of the antifreezing bituminous pavement can be removed easily. Bituminous mixture pavement performances are not reduced. Construction complexity is not improved.
Description
Technical field
The present invention relates to a kind of antifreeze flexible pavement, be specifically related to the laying method that a kind of temperature is mixed the freeze-proof flexible pavement.
Background technology
Current energy-saving and emission-reduction, protection environment, sustainable development are the common hot issues of paying close attention in countries in the world, and China is also economizing on resources as fundamental state policy.
Hot-laid mixture is that advantage is outstanding, and pavement performance is good, is mainstream technology.But also there is environment pollution heavy, significant disadvantages such as energy consumption is big, and ageing of asphalt is more serious.Though the environmental protection of cold mixing compound, energy-conservation, compound can be stored, pavement performance then can't be compared with hot-laid mixture.That at present, most flexible pavement all adopts basically is traditional hot-mix asphalt mixture HMA (HotMix Asphalt).Because the construction temperature that HMA requires is very high; Need pitch be heated to very high temperature with gathering materials in process of production; Not only to consume a large amount of energy; And in the process of producing and constructing, also can give off a large amount of waste gas and dust, environmental quality around having a strong impact on and constructor's is healthy.How to keep the well behaved characteristics of hot-mix asphalt mixture and overcome that the environment pollution of its existence is heavy, energy consumption big, there are problems such as aging in pitch, becomes the direction that everybody makes great efforts.In the case, warm mix asphalt technologies occurs and drops into rapidly and use.
Warm-Mix Bitumen Mixture originates from Europe, plays beginning making test road, in international flexible pavement conference, exchanges first in 2000 in 2000.Be one type and mix and stir temperature between hot-mix asphalt mixture (150 ℃ 180 ℃) and cold mixing (normal temperature) bituminous mixture, performance reaches the novel energy-saving emission-reducing bituminous mixture of (or approaching) hot-mix asphalt mixture.
In order to remedy the deficiency of HMA, people have developed this new environmental protection and energy saving product of Warm-Mix Bitumen Mixture WMA (Warm Mix Asphalt).So-called WMA is exactly through certain technical measures, reduces the viscosity of pitch, thereby pitch can be mixed and stirred under relatively low temperature and construct, and keeps it to be not less than simultaneously even is higher than the bituminous mixture technology of the functional performance of HMA.Warm-Mix Bitumen Mixture is a kind of energy saving and environment friendly new material, and it is to reach the construction temperature that reduces bituminous mixture through the working viscosity that reduces pitch.Mainly containing pitch at present---mineral method, foamed asphalt temperature are mixed method, organic additive method and are mixed four kinds of methods based on surface-active platform temperature.Warm-mixed asphalt still is in the stage that experiment is the master at present then, to northern China cold snap characteristics, needs corresponding suitable temperature mix freeze-proof asphalt pavement material and laying method.
Summary of the invention
The invention reside in the laying method that a kind of flexible pavement is provided, the top layer accumulated snow of road surface pavement can easily be dispeled, and the while does not reduce the pavement performance of bituminous mixture and do not increase the complexity of construction.
In order to solve the problems of the technologies described above, the present invention has adopted following optimal technical scheme through a large amount of experiments, and a kind of antifreeze flexible pavement makes through following method, and said method comprises the steps:
1) the preparation temperature is mixed the freeze-proof asphalt binder
Get the Sasobit warm-mixing agent of 2～5 weight portions; And No. 90 plain asphalts of 85～95 weight portions; Both are adopted rotating speed in 100～120 ℃ temperature range be that the shearing emulsifier of 200～400RPM stirred 30～50 minutes; The asphalt binder that obtains adopts the shearing emulsifier of 2000～5000RPM to stir in 90～130 ℃ temperature range 40～50 minutes with hydrophobic expansion pearlite again, makes temperature and mixes the freeze-proof asphalt binder;
2) the preparation temperature is mixed the freeze-proof bituminous mixture
At first, rubble, crushing gravel batch mixing are screened, the sieve with 4.75mm sieves earlier; Will be greater than the particle removal of 4.75mm, and then use the sieve of 2.36mm to sieve, with the particle of 2.36mm～4.75mm as coarse aggregate; Will be less than the particle of 2.36mm as fine aggregate, getting parts by weight is 300 parts of coarse aggregates and 200 parts of fine aggregates, adds weight portion simultaneously and be 30 parts breeze; Be mixed and heated to 100～140 ℃, subsequently with coarse aggregate dry mixing 30～60 seconds, after mixing the temperature of step (1) preparation the freeze-proof asphalt binder and be heated to 90～130 ℃; With the wet-mixing 60 seconds of gathering materials, make temperature and mix the freeze-proof bituminous mixture;
3) the compacting freeze-proof flexible pavement that paves
In 110～120 ℃ temperature range, temperature is mixed the freeze-proof bituminous mixture pave;
In 90～110 ℃ temperature range, carry out temperature and mix the compacting of freeze-proof bituminous mixture; The compacting basic procedure is identical with general bituminous mixture compacting flow process.
Beneficial effect of the present invention is: the present invention is directed to Chinese northern weather condition and carried out big quantity research and test; Selected optimized technical scheme; Temperature of the present invention is mixed the freeze-proof flexible pavement and is had mix, paves, compacting temperature is low; Energy consumption and characteristics such as low in the pollution of the environment, and have the function of anti-ice and snow, reduce the ice and snow at flexible pavement top under the subzero temperature condition and root out difficulty.
The specific embodiment
Embodiment 1
1) the preparation temperature is mixed the freeze-proof asphalt binder
Get the Sasobit warm-mixing agent of 2 weight portions; And No. 90 plain asphalts of 95 weight portions; Both are adopted rotating speed in 100～120 ℃ temperature range be that the shearing emulsifier of 400RPM stirred 50 minutes; The asphalt binder that obtains adopts the shearing emulsifier of 5000RPM to stir in 90～130 ℃ temperature range 50 minutes with hydrophobic expansion pearlite again, makes temperature and mixes the freeze-proof asphalt binder;
2) the preparation temperature is mixed the freeze-proof bituminous mixture
At first, rubble, crushing gravel batch mixing are screened, the sieve with 4.75mm sieves earlier; Will be greater than the particle removal of 4.75mm, and then use the sieve of 2.36mm to sieve, with the particle of 2.36mm～4.75mm as coarse aggregate; Will be less than the particle of 2.36mm as fine aggregate, getting parts by weight is 300 parts of coarse aggregates and 200 parts of fine aggregates, adds weight portion simultaneously and be 30 parts breeze; Be mixed and heated to 140 ℃, subsequently with coarse aggregate dry mixing 60 seconds, after mixing the temperature of step 1) preparation the freeze-proof asphalt binder and be heated to 130 ℃; With the wet-mixing 60 seconds of gathering materials, make temperature and mix the freeze-proof bituminous mixture;
3) the compacting freeze-proof flexible pavement that paves
In 110～120 ℃ temperature range, temperature is mixed the freeze-proof bituminous mixture pave;
In 90～110 ℃ temperature range, carry out temperature and mix the compacting of freeze-proof bituminous mixture; The compacting basic procedure is identical with general bituminous mixture compacting flow process.
Embodiment 2
1) the preparation temperature is mixed the freeze-proof asphalt binder
Get the Sasobit warm-mixing agent of 5 weight portions; And No. 90 plain asphalts of 85 weight portions; Both are adopted rotating speed in 100～120 ℃ temperature range be that the shearing emulsifier of 200RPM stirred 30 minutes; The asphalt binder that obtains adopts the shearing emulsifier of 2000RPM to stir in 90～130 ℃ temperature range 40 minutes with hydrophobic expansion pearlite again, makes temperature and mixes the freeze-proof asphalt binder;
2) the preparation temperature is mixed the freeze-proof bituminous mixture
At first, rubble, crushing gravel batch mixing are screened, the sieve with 4.75mm sieves earlier; Will be greater than the particle removal of 4.75mm, and then use the sieve of 2.36mm to sieve, with the particle of 2.36mm～4.75mm as coarse aggregate; Will be less than the particle of 2.36mm as fine aggregate, getting parts by weight is 300 parts of coarse aggregates and 200 parts of fine aggregates, adds weight portion simultaneously and be 30 parts breeze; Be mixed and heated to 100 ℃, subsequently with coarse aggregate dry mixing 30 seconds, after mixing the temperature of step (1) preparation the freeze-proof asphalt binder and be heated to 90 ℃; With the wet-mixing 60 seconds of gathering materials, make temperature and mix the freeze-proof bituminous mixture;
3) the compacting freeze-proof flexible pavement that paves
In 110～120 ℃ temperature range, temperature is mixed the freeze-proof bituminous mixture pave;
In 90～110 ℃ temperature range, carry out temperature and mix the compacting of freeze-proof bituminous mixture; The compacting basic procedure is identical with general bituminous mixture compacting flow process.
Claims (1)
1. antifreeze flexible pavement, it is characterized in that: make through following method, said method comprises the steps:
1) the preparation temperature is mixed the freeze-proof asphalt binder
Get the Sasobit warm-mixing agent of 2～5 weight portions; And No. 90 plain asphalts of 85～95 weight portions; Both are adopted rotating speed in 100～120 ℃ temperature range be that the shearing emulsifier of 200～400RPM stirred 30～50 minutes; The asphalt binder that obtains adopts the shearing emulsifier of 2000～5000RPM to stir in 90～130 ℃ temperature range 40～50 minutes with hydrophobic expansion pearlite again, makes temperature and mixes the freeze-proof asphalt binder;
2) the preparation temperature is mixed the freeze-proof bituminous mixture
At first, rubble, crushing gravel batch mixing are screened, the sieve with 4.75mm sieves earlier; Will be greater than the particle removal of 4.75mm, and then use the sieve of 2.36mm to sieve, with the particle of 2.36mm～4.75mm as coarse aggregate; Will be less than the particle of 2.36mm as fine aggregate, getting parts by weight is 300 parts of coarse aggregates and 200 parts of fine aggregates, adds weight portion simultaneously and be 30 parts breeze; Be mixed and heated to 100～140 ℃, subsequently with coarse aggregate dry mixing 30～60 seconds, after mixing the temperature of step (1) preparation the freeze-proof asphalt binder and be heated to 90～130 ℃; With the wet-mixing 60 seconds of gathering materials, make temperature and mix the freeze-proof bituminous mixture;
3) the compacting freeze-proof flexible pavement that paves
In 110～120 ℃ temperature range, temperature is mixed the freeze-proof bituminous mixture pave;
In 90～110 ℃ temperature range, carry out temperature and mix the compacting of freeze-proof bituminous mixture; The compacting basic procedure is identical with general bituminous mixture compacting flow process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100571386A CN102587247A (en) | 2012-03-07 | 2012-03-07 | Antifreezing bituminous pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100571386A CN102587247A (en) | 2012-03-07 | 2012-03-07 | Antifreezing bituminous pavement |
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| CN102587247A true CN102587247A (en) | 2012-07-18 |
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| CN2012100571386A Pending CN102587247A (en) | 2012-03-07 | 2012-03-07 | Antifreezing bituminous pavement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107244836A (en) * | 2017-07-12 | 2017-10-13 | 南通市市政工程设计院有限责任公司 | A kind of anti-freezing asphalt road |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302348A (en) * | 2007-05-11 | 2008-11-12 | 深圳市海川实业股份有限公司 | Warm-mix bitumen mixture and preparation therof |
| JP2009235227A (en) * | 2008-03-27 | 2009-10-15 | Yukihisa Takei | Pavement asphalt composition, pavement asphalt mixture and asphalt paving method |
| CN101899218A (en) * | 2010-07-22 | 2010-12-01 | 天津市市政工程研究院 | Asphalt warm-mix agent and asphalt mixture mixed by same as well as preparation methods thereof |
| CN102234188A (en) * | 2010-05-06 | 2011-11-09 | 同济大学 | Method for preparing environment-friendly warm mix asphalt |
| KR20110127045A (en) * | 2010-05-18 | 2011-11-24 | 한국석유공업 주식회사 | Ascon binder composition and producing method thereof |
-
2012
- 2012-03-07 CN CN2012100571386A patent/CN102587247A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302348A (en) * | 2007-05-11 | 2008-11-12 | 深圳市海川实业股份有限公司 | Warm-mix bitumen mixture and preparation therof |
| JP2009235227A (en) * | 2008-03-27 | 2009-10-15 | Yukihisa Takei | Pavement asphalt composition, pavement asphalt mixture and asphalt paving method |
| CN102234188A (en) * | 2010-05-06 | 2011-11-09 | 同济大学 | Method for preparing environment-friendly warm mix asphalt |
| KR20110127045A (en) * | 2010-05-18 | 2011-11-24 | 한국석유공업 주식회사 | Ascon binder composition and producing method thereof |
| CN101899218A (en) * | 2010-07-22 | 2010-12-01 | 天津市市政工程研究院 | Asphalt warm-mix agent and asphalt mixture mixed by same as well as preparation methods thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107244836A (en) * | 2017-07-12 | 2017-10-13 | 南通市市政工程设计院有限责任公司 | A kind of anti-freezing asphalt road |
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Application publication date: 20120718 |