CN102587246A - Paving method of anti-freezing asphalt road - Google Patents
Paving method of anti-freezing asphalt road Download PDFInfo
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- CN102587246A CN102587246A CN201210057162XA CN201210057162A CN102587246A CN 102587246 A CN102587246 A CN 102587246A CN 201210057162X A CN201210057162X A CN 201210057162XA CN 201210057162 A CN201210057162 A CN 201210057162A CN 102587246 A CN102587246 A CN 102587246A
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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 a paving method of an anti-freezing asphalt road. the method is characterized by comprising the following steps of: 1) preparing a warmly-mixed anti-freezing asphalt binder material; 2) preparing a warmly-mixed anti-freezing asphalt mixture; and 3) paving and compacting the anti-freezing asphalt road, wherein the step 1) comprises the following substeps: agitating 2-5 parts by weight of Sasobit warm mixing agent and 85-95 parts by weight of common asphalt No.90 at 100-120 DEG C in the presence of a shearing emulsifying agent with a rotating speed of 200-400 RPM (Revolutions Per Minute) for 30-50 minutes; and agitating the obtained asphalt binder material and hydrophobic expanded perlite at 90-130 DEG C in the presence of a shearing emulsifying agent with a rotating speed of 2000-5000 RPM for 40-50 minutes, so as to finally obtain the warmly-mixed anti-freezing asphalt binder material. Accumulated snow on the surface layer of the paved road can be easily removed; and meanwhile, the road performance of the asphalt mixture is not reduced and the complicity of construction is not increased.
Description
Technical field
The present invention relates to a kind of laying method of 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 laying method of flexible pavement 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. the laying method of an antifreeze flexible pavement is characterized in that: comprise 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 |
|---|---|---|---|
| CN201210057162XA CN102587246A (en) | 2012-03-07 | 2012-03-07 | Paving method of anti-freezing asphalt road |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210057162XA CN102587246A (en) | 2012-03-07 | 2012-03-07 | Paving method of anti-freezing asphalt road |
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| CN102587246A true CN102587246A (en) | 2012-07-18 |
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| CN201210057162XA Pending CN102587246A (en) | 2012-03-07 | 2012-03-07 | Paving method of anti-freezing asphalt road |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849990A (en) * | 2012-09-29 | 2013-01-02 | 长安大学 | Modified asphalt concrete with road surface cooling function |
| CN104386949A (en) * | 2014-10-15 | 2015-03-04 | 北京建筑大学 | Reparation method and construction method of warm mix asphalt mixture |
| CN110331642A (en) * | 2019-07-13 | 2019-10-15 | 四川玖壹建设工程有限公司 | The municipal micro- cover preventive maintenance construction method of asphalt pavement warm mixing |
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 CN201210057162XA patent/CN102587246A/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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849990A (en) * | 2012-09-29 | 2013-01-02 | 长安大学 | Modified asphalt concrete with road surface cooling function |
| CN104386949A (en) * | 2014-10-15 | 2015-03-04 | 北京建筑大学 | Reparation method and construction method of warm mix asphalt mixture |
| CN110331642A (en) * | 2019-07-13 | 2019-10-15 | 四川玖壹建设工程有限公司 | The municipal micro- cover preventive maintenance construction method of asphalt pavement warm mixing |
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Application publication date: 20120718 |