CN102795810A - Warm mixing shape memory alloy (SMA) asphalt mixture and preparation method thereof - Google Patents
Warm mixing shape memory alloy (SMA) asphalt mixture and preparation method thereof Download PDFInfo
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- CN102795810A CN102795810A CN201110135665XA CN201110135665A CN102795810A CN 102795810 A CN102795810 A CN 102795810A CN 201110135665X A CN201110135665X A CN 201110135665XA CN 201110135665 A CN201110135665 A CN 201110135665A CN 102795810 A CN102795810 A CN 102795810A
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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
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Abstract
The invention discloses a warm mixing shape memory alloy (SMA) asphalt mixture. The warm mixing SMA asphalt mixture comprises styrene-butadiene-styrene (SBS) modified asphalt, aggregate, fiber, mineral powder and warm mixing agent, wherein the warm mixing agent is inorganic silico-aluminate of which the water content is 18 to 23 percent; based on 1 weight part of SBS modified asphalt, the mixture contains 10 to 18 parts of aggregate, 0.01 to 0.08 part of fiber, 0.5 to 1.5 parts of mineral powder and 0.02 to 0.08 part of warm mixing agent; and the invention discloses a preparation method for the warm mixing SMA asphalt mixture, and adding sequence, control temperature and mixing time of the materials are described in the method. According to the warm mixing SMA asphalt mixture, the mixing temperature of the SMA asphalt is effectively reduced, the problem that the SMA asphalt mixture is difficult to compact is solved, emission of toxic gases such as 'asphalt fume' is reduced to a great extent, damage to the environment and harm to health of constructors are reduced, and storage type production is facilitated.
Description
[technical field]
The invention belongs to technical field of road engineering materials, relate to a kind of asphalt and preparation method thereof.
[background technology]
In the last few years; Fast development along with China's expressway construction cause; Traffic and weather condition are also increasingly high to the requirement of express highway pavement use properties; The on the one hand heavy duty of motorway driving vehicle, overload phenomenon be serious, and canalized traffic has increased the weight of the destruction that axle for vehicle carries road pavement; On the other hand, China's most area four seasons difference variation are very big, and bituminous pavement is standing the test that weather condition change, and the needs of high quality bitumen for road use are constantly increased, and therefore, it is exactly a kind of method commonly used that pitch is carried out modification.Modifying asphalt is in pitch, to add a certain amount of properties-correcting agent, improves performances such as bituminous temperature sensibility, high-temperature behavior, low-temperature performance, weather resistance, resistance to deterioration, thereby improves the use properties of bituminous pavement.The SMA asphalt has characteristics such as high temperature rutting resistance, crack resistance at low-temperature, fatigue performance, water stability, good endurance, is developed rapidly in China.But SMA asphalt construction temperature is high, and the Heating temperature of gathering materials is between 180 ℃～190 ℃, and drop temperature is controlled between 175 ℃～185 ℃; Because construction temperature is high, in construction process, will produce a large amount of glance coals, environmental pollution is heavy; Shortcomings such as energy expenditure is serious, if the construction in the north, because big with the temperature difference in the external world; The cooling of SMA asphalt is fast, is unfavorable for the compacting of SMA asphalt.
Along with China GDP maintains sustained and rapid growth; Total energy consumption continues soaring, and the discharging of China's greenhouse gases has received the concern of countries in the world, reduces discharge of harmful gases to be the task of top priority; Concerning China, research and extension WMA The Application of Technology has crucial realistic meaning.Specific requirement in conjunction with current situation both domestic and external and engineering; And the practical situation of China; The shortcoming that fundamentally changing reduces phlegm and internal heat mixes the SMA asphalt; The effect that the performance temperature is mixed energy-saving and emission-reduction of SMA asphalt and safety and environmental protection accelerates to digest and assimilate research promotion WMA technology, has remarkable economic efficiency and social benefit.
[summary of the invention]
In order to realize the purpose that SMA pitch temperature is mixed and to solve the problem that the SMA asphalt is difficult for compacting; The invention provides a kind of temperature and mix SMA asphalt and preparation method thereof; This temperature is mixed the SMA asphalt and has been reduced the SMA bituminous conscientiously and mix and stir temperature, and the present invention adopts following technical scheme for this reason:
A kind of temperature is mixed the SMA asphalt, comprising: the SBS modifying asphalt, gather materials, fiber, breeze and warm-mixing agent; Warm-mixing agent is that water ratio is 18%23% inorganic silicon-aluminum hydrochlorate; In SBS modifying asphalt parts by weight is 1 part, the 10-18 part of gathering materials, fiber 0.01-0.08 part, breeze 0.5-1.5 part, warm-mixing agent 0.02-0.08 part.
The addition of above-mentioned warm-mixing agent is mixed 0.3% of SMA asphalt weight for temperature; 25% of above-mentioned breeze weight is slaked lime.
A kind of temperature is mixed the preparation method of SMA modified asphalt mixture, may further comprise the steps:
A, will gather materials to be heated to join after the 140-150 ℃ of oven dry and mix and stir in the pot, and mix and stir kettle temperature and remain on 135-145 ℃;
B, join after the SBS modifying asphalt is heated to 155-170 ℃ and mix and stir in the pot, be sprinkling upon the surface of SBS modifying asphalt to warm-mixing agent, in the mix pot, mix and stir 120-150s;
C, breeze and fiber joined mix and stir in the pot, mix and stir 80-100s;
D, the compound after will mixing and stirring take the dish out of the pot under 130-140 ℃, at 115-130 ℃ of compacted under.
As preferably, the mixing time of breeze is 90s among the step c.
Simultaneously, the present invention also provides a kind of temperature to mix the pavement construction method of SMA asphalt, comprising:
1) by the surface temperature of paving concrete pavement: >=10 ℃;
2) external temperature: >=10 ℃;
3) avoid constructing at strong wind weather;
4) compound is transported in situ temperature: 115～140 ℃;
5) temperature that paves: 110～130 ℃;
6) initially roll temperature: 105～125 ℃, immediately following rolling;
7) roll finishing temperature: 70～80 ℃, must compactly arrange compacting, before reducing to this temperature, accomplish compacting;
8) open to traffic temperature: be not higher than 50 ℃, temperature is lower at the crossing or when traction engine is arranged.
The warm-mixing agent that the present invention selected for use is that a kind of water ratio is a 18%-23% inorganic silicon-aluminum hydrochlorate, and profile is a white powder, mixes and stirs at the SMA asphalt and adds warm-mixing agent in the process; Prolong 15～30 seconds duration of mixings, thereby in binder, produce foaming, this is because the moisture in the warm-mixing agent discharges with superfine state continuance about 100 ℃; Make it foaming with asphalt grouting; Reduce asphalt viscosity, make pitch can be under relatively low temperature condition and aggregate blending even, the foamable reaction in the liquid phase binder plays the effect of lubricant; Play temperature and mix effect, make the temperature of mixing and stirring of compound significantly be reduced to 135～145 ℃.
Temperature of the present invention is mixed the SMA asphalt and had the following advantages: it is convenient 1) to add, and need not extra increase equipment; 2) applied widely, can be used in the compound of various grading types; 3) can reduce the aging of construction process medium pitch; 4) can simplify the production sequence of compound, prolong the work-ing life of asphalt mix equipment; 5) warm-mixing agent that uses adopts natural mineral to do raw material, can not cause environmental pollution; 6) construction temperature can reduce by 30 ℃ with the construction temperature of grating hot asphalt relatively at least; 7) can reduce the consumption of fuel, compare with HMA and approximately can practice thrift 30% the energy; 8) reduce CO
2, SO
x, NO
x, VOC, emission of harmful substances such as dust, thus reduce to environment damage with to workmen's Health hazard; 9) can more stably store the longer time, be convenient to storage characteristics production, prolong shipment distance; 10) can the proper extension construction seasons.
[embodiment]
Below in conjunction with specific embodiment technical scheme of the present invention is done further to set forth and explanation.
The aggregate grading that uses among the embodiment is the WSMA-13 type, that is:
Embodiment 1
Get 9509g and gather materials and be heated to 145 ℃ of oven dry, join and mix and stir in the pot, mix and stir kettle temperature and remain on 140 ℃; Get to join after the 594gSBS modifying asphalt is heated to 165 ℃ and mix and stir in the pot, be sprinkling upon the surface of SBS modifying asphalt to the 31.5g warm-mixing agent, in the mix pot, mix and stir 135s; 396g breeze and 10.5g fiber joined mix and stir in the pot; Mixing and stirring 90s, 25% of its weight is slaked lime in this breeze wherein, and the compound after mixing and stirring is taken the dish out of the pot under 135 ℃; At 125 ℃ of compacted unders, promptly obtain temperature and mix the SMA asphalt.
Embodiment 2
Get 8750g and gather materials and be heated to 140 ℃ of oven dry, join and mix and stir in the pot, mix and stir kettle temperature and remain on 135 ℃; Get to join after the 778gSBS modifying asphalt is heated to 155 ℃ and mix and stir in the pot, be sprinkling upon the surface of SBS modifying asphalt to the 31.5g warm-mixing agent, in the mix pot, mix and stir 120s; 972g breeze and 31.5g fiber joined mix and stir in the pot, mix and stir 83s, the compound after mixing and stirring is taken the dish out of the pot under 130 ℃; At 115 ℃ of compacted unders, promptly obtain temperature and mix the SMA asphalt.
Embodiment 3
Get 10201g and gather materials and be heated to 146 ℃ of oven dry, join and mix and stir in the pot, mix and stir kettle temperature and remain on 136 ℃; Get to join after the 638gSBS modifying asphalt is heated to 170 ℃ and mix and stir in the pot, be sprinkling upon the surface of SBS modifying asphalt to the 33.8g warm-mixing agent, in the mix pot, mix and stir 148s; 425g breeze and 33.8g fiber joined mix and stir in the pot; Mixing and stirring 97s, 25% of its weight is slaked lime in this breeze wherein, and the compound after mixing and stirring is taken the dish out of the pot under 136 ℃; At 128 ℃ of compacted unders, promptly obtain temperature and mix the SMA asphalt.
Embodiment 4
Get 9387g and gather materials and be heated to 147 ℃ of oven dry, join and mix and stir in the pot, mix and stir kettle temperature and remain on 139 ℃; Get to join after the 834gSBS modifying asphalt is heated to 168 ℃ and mix and stir in the pot, be sprinkling upon the surface of SBS modifying asphalt to the 33.8g warm-mixing agent, in the mix pot, mix and stir 146s; 1043g breeze and 45.1g fiber joined mix and stir in the pot, mix and stir 98s, the compound after mixing and stirring is taken the dish out of the pot under 140 ℃; At 130 ℃ of compacted unders, promptly obtain temperature and mix the SMA asphalt.
Embodiment 5
Get 9070g and gather materials and be heated to 140 ℃ of oven dry, join and mix and stir in the pot, mix and stir kettle temperature and remain on 135 ℃; Get to join after the 641gSBS modifying asphalt is heated to 155 ℃ and mix and stir in the pot, be sprinkling upon the surface of SBS modifying asphalt to the 31.8g warm-mixing agent, in the mix pot, mix and stir 120s; 846g breeze and 34.5g fiber joined mix and stir in the pot; Mixing and stirring 80s, 25% of its weight is slaked lime in this breeze wherein, and the compound after mixing and stirring is taken the dish out of the pot under 133 ℃; At 120 ℃ of compacted unders, promptly obtain temperature and mix the SMA asphalt.
Embodiment 6
Get 10048g and gather materials and be heated to 148 ℃ of oven dry, join and mix and stir in the pot, mix and stir kettle temperature and remain on 142 ℃; Get to join after the 687gSBS modifying asphalt is heated to 168 ℃ and mix and stir in the pot, be sprinkling upon the surface of SBS modifying asphalt to the 33.8g warm-mixing agent, in the mix pot, mix and stir 146s; 527g breeze and 33.8g fiber joined mix and stir in the pot, mix and stir 99s, the compound after mixing and stirring is taken the dish out of the pot under 135 ℃; At 125 ℃ of compacted unders, promptly obtain temperature and mix the SMA asphalt.
Temperature is mixed the test of SMA asphalt Marshall residual stability and the freeze thawing cleavage strength is seen table 1 than test:
Table 1 is puddled test of SMA asphalt Marshall residual stability and freeze thawing cleavage strength
Temperature is mixed SMA asphalt dynamic stability test, and the rut dynamic stability is seen table 2
Table 2 temperature is mixed SMA asphalt dynamic stability
Can find out that from table 1 and table 2 this temperature is mixed all meet the specifications " asphalt highway construction technique normalizing " (JTG F40-2004) related requests of the test of SMA asphalt Marshall residual stability, freeze thawing cleavage strength ratio, rut dynamic stability.
Claims (6)
1. a temperature is mixed the SMA asphalt, it is characterized in that, comprising: the SBS modifying asphalt, gather materials, fiber, breeze and warm-mixing agent; Said warm-mixing agent is that water ratio is a 18%-23% inorganic silicon-aluminum hydrochlorate; In said SBS modifying asphalt parts by weight is 1 part, the said 10-18 part of gathering materials, said fiber 0.01-0.08 part, said breeze 0.5-1.5 part, said warm-mixing agent 0.02-0.08 part.
2. temperature according to claim 1 is mixed the SMA modified asphalt mixture, it is characterized in that: the addition of said warm-mixing agent is mixed 0.3% of SMA asphalt weight for temperature.
3. temperature according to claim 1 is mixed the SMA modified asphalt mixture, it is characterized in that: 25% of said breeze weight is slaked lime.
4. the preparation method that temperature is mixed the SMA modified asphalt mixture is characterized in that, may further comprise the steps:
A, will gather materials to be heated to join after the 140-150 ℃ of oven dry and mix and stir in the pot, and mix and stir kettle temperature and remain on 135-145 ℃;
B, join after the SBS modifying asphalt is heated to 155-170 ℃ and mix and stir in the pot, be sprinkling upon the surface of SBS modifying asphalt to warm-mixing agent, in the mix pot, mix and stir 120-150s;
C, breeze and fiber joined mix and stir in the pot, mix and stir 80-100s;
D, the compound after will mixing and stirring take the dish out of the pot under 130-140 ℃, at 115-130 ℃ of compacted under.
5. temperature according to claim 4 is mixed the preparation method of SMA asphalt, it is characterized in that: the mixing time of breeze is 90s among the said step c.
6. a temperature is mixed the pavement construction method of SMA asphalt, it is characterized in that comprising:
1) by the surface temperature of paving concrete pavement: >=10 ℃;
2) external temperature: >=10 ℃;
3) avoid constructing at strong wind weather;
4) compound is transported in situ temperature: 115～140 ℃;
5) temperature that paves: 110～130 ℃;
6) initially roll temperature: 105～125 ℃, immediately following rolling;
7) roll finishing temperature: 70～80 ℃, must compactly arrange compacting, before reducing to this temperature, accomplish compacting;
8) open to traffic temperature: be not higher than 50 ℃, temperature is lower at the crossing or when traction engine is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110135665XA CN102795810A (en) | 2011-05-23 | 2011-05-23 | Warm mixing shape memory alloy (SMA) asphalt mixture and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110135665XA CN102795810A (en) | 2011-05-23 | 2011-05-23 | Warm mixing shape memory alloy (SMA) asphalt mixture and preparation method thereof |
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| CN102795810A true CN102795810A (en) | 2012-11-28 |
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| CN201110135665XA Pending CN102795810A (en) | 2011-05-23 | 2011-05-23 | Warm mixing shape memory alloy (SMA) asphalt mixture and preparation method thereof |
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Cited By (12)
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|---|---|---|---|---|
| CN103102108A (en) * | 2012-12-28 | 2013-05-15 | 栾海 | Foamed warm mix asphalt mixture and preparation method thereof |
| CN103205128A (en) * | 2013-04-12 | 2013-07-17 | 深圳市天坤元环保科技有限公司 | Warm mixed asphalt concrete additive and preparation method thereof |
| CN103922646A (en) * | 2014-04-09 | 2014-07-16 | 东北林业大学 | Warm-mixing asphalt mixture |
| CN104003656A (en) * | 2014-05-05 | 2014-08-27 | 广厦建设集团有限责任公司贵州分公司 | SMA mixture, and preparation method and application thereof |
| CN105254221A (en) * | 2015-09-28 | 2016-01-20 | 江苏东交工程设计顾问有限公司 | Composite type warm mix asphalt mixture, preparation method and application thereof |
| CN105330202A (en) * | 2015-11-04 | 2016-02-17 | 同济大学 | Preparation method of modified asphalt mixture |
| CN105837091A (en) * | 2016-03-25 | 2016-08-10 | 湖北大学 | Composite warm-mixed flame-retarding antiskid asphalt tunnel pavement material and preparation method thereof |
| CN107140880A (en) * | 2016-03-01 | 2017-09-08 | 深圳海川新材料科技有限公司 | A kind of warm mix SMA asphalts and preparation method thereof |
| CN107140898A (en) * | 2016-03-01 | 2017-09-08 | 深圳海川新材料科技有限公司 | A kind of warm mix SBS modified asphalt mixtures and preparation method thereof |
| CN110686945A (en) * | 2019-09-27 | 2020-01-14 | 深圳市市政工程总公司 | Preparation method of fiber warm-mix asphalt mixture test piece |
| CN111499272A (en) * | 2020-04-26 | 2020-08-07 | 赵俊 | Environment-friendly warm-mix asphalt mixture and preparation method thereof |
| CN113462176A (en) * | 2021-07-03 | 2021-10-01 | 苏州三创路面工程有限公司 | Warm-mixed flame-retardant SMA asphalt mixture, and preparation method, application and construction method thereof |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103102108A (en) * | 2012-12-28 | 2013-05-15 | 栾海 | Foamed warm mix asphalt mixture and preparation method thereof |
| CN103205128A (en) * | 2013-04-12 | 2013-07-17 | 深圳市天坤元环保科技有限公司 | Warm mixed asphalt concrete additive and preparation method thereof |
| CN103205128B (en) * | 2013-04-12 | 2015-02-04 | 新疆交通建设（集团）有限责任公司 | Warm mixed asphalt concrete additive and preparation method thereof |
| CN103922646A (en) * | 2014-04-09 | 2014-07-16 | 东北林业大学 | Warm-mixing asphalt mixture |
| CN104003656A (en) * | 2014-05-05 | 2014-08-27 | 广厦建设集团有限责任公司贵州分公司 | SMA mixture, and preparation method and application thereof |
| CN104003656B (en) * | 2014-05-05 | 2016-01-06 | 广厦建设集团有限责任公司贵州分公司 | A kind of SMA mixture and its preparation method and application |
| CN105254221A (en) * | 2015-09-28 | 2016-01-20 | 江苏东交工程设计顾问有限公司 | Composite type warm mix asphalt mixture, preparation method and application thereof |
| CN105330202A (en) * | 2015-11-04 | 2016-02-17 | 同济大学 | Preparation method of modified asphalt mixture |
| CN107140898A (en) * | 2016-03-01 | 2017-09-08 | 深圳海川新材料科技有限公司 | A kind of warm mix SBS modified asphalt mixtures and preparation method thereof |
| CN107140880A (en) * | 2016-03-01 | 2017-09-08 | 深圳海川新材料科技有限公司 | A kind of warm mix SMA asphalts and preparation method thereof |
| CN105837091A (en) * | 2016-03-25 | 2016-08-10 | 湖北大学 | Composite warm-mixed flame-retarding antiskid asphalt tunnel pavement material and preparation method thereof |
| CN105837091B (en) * | 2016-03-25 | 2018-05-22 | 湖北大学 | A kind of compound warm mix flame-retardant antiskid asphalt tunnel road surface material and preparation method thereof |
| CN110686945A (en) * | 2019-09-27 | 2020-01-14 | 深圳市市政工程总公司 | Preparation method of fiber warm-mix asphalt mixture test piece |
| CN111499272A (en) * | 2020-04-26 | 2020-08-07 | 赵俊 | Environment-friendly warm-mix asphalt mixture and preparation method thereof |
| CN112645643A (en) * | 2020-04-26 | 2021-04-13 | 赵俊 | Environment-friendly warm-mix asphalt mixture |
| CN112759301A (en) * | 2020-04-26 | 2021-05-07 | 赵俊 | Environment-friendly warm-mix asphalt mixture |
| CN111499272B (en) * | 2020-04-26 | 2021-05-11 | 山东汇通建设集团有限公司 | Environment-friendly warm-mix asphalt mixture and preparation method thereof |
| CN113462176A (en) * | 2021-07-03 | 2021-10-01 | 苏州三创路面工程有限公司 | Warm-mixed flame-retardant SMA asphalt mixture, and preparation method, application and construction method thereof |
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Address after: 517000 Guangdong Province, Heyuan city high tech Development Zone, No. three Applicant after: GUANGDONG OCEANPOWER TECHNOLOGY Co.,Ltd. Applicant after: SHENZHEN OCEAN POWER ENGINEERING TECHNOLOGY Co.,Ltd. Applicant after: SHENZHEN OCEANPOWER INDUSTRY Co.,Ltd. Applicant after: SHENZHEN OCEAN POWER MATERIAL TECHNOLOGY Co.,Ltd. Address before: 12 No. 517000 Guangdong city of Heyuan province high tech Development Zone Technology Avenue Applicant before: HEYUAN OCEAN POWER TECHNOLOGY Co.,Ltd. Applicant before: SHENZHEN OCEAN POWER ENGINEERING TECHNOLOGY Co.,Ltd. Applicant before: SHENZHEN OCEANPOWER INDUSTRY Co.,Ltd. Applicant before: SHENZHEN OCEAN POWER MATERIAL TECHNOLOGY Co.,Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: HEYUAN OCEANPOWER TECHNOLOGY CO., LTD. TO: GUANGZHOU HAICHUAN TECHNOLOGY CO., LTD. Free format text: CORRECT: ADDRESS; FROM: 517000 HEYUAN, GUANGDONG PROVINCE TO: 518040 SHENZHEN, GUANGDONG PROVINCE |
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Effective date of registration: 20140425 Address after: 518040 Guangdong city of Shenzhen province Futian District Tian Industrial Zone F3.8 Che Kung Temple CD block seven, eighth floor Applicant after: SHENZHEN OCEAN POWER MATERIAL TECHNOLOGY Co.,Ltd. Address before: 517000 Guangdong Province, Heyuan city high tech Development Zone, No. three Applicant before: GUANGDONG OCEANPOWER TECHNOLOGY Co.,Ltd. Applicant before: SHENZHEN OCEAN POWER ENGINEERING TECHNOLOGY Co.,Ltd. Applicant before: SHENZHEN OCEANPOWER INDUSTRY Co.,Ltd. Applicant before: SHENZHEN OCEAN POWER MATERIAL TECHNOLOGY Co.,Ltd. |
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Application publication date: 20121128 |