CN103554932B - A kind of have fire-retardantly mix with heat the modifying asphalt reducing discharging effect - Google Patents
A kind of have fire-retardantly mix with heat the modifying asphalt reducing discharging effect Download PDFInfo
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- CN103554932B CN103554932B CN201310488750.3A CN201310488750A CN103554932B CN 103554932 B CN103554932 B CN 103554932B CN 201310488750 A CN201310488750 A CN 201310488750A CN 103554932 B CN103554932 B CN 103554932B
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Abstract
The invention discloses a kind of have fire-retardantly mix with heat the asphalt pavement material reducing discharging effect, comprise by mass percentage: basic asphalt: 70 ~ 90%; Tin white cobalt: 5 ~ 17.5%; Specularite: 1.5 ~ 5.5%; Coupling agent: 2.5 ~ 7%; Raw-material mass percent sum is 100%; Basic asphalt is the common modifying asphalt such as bi tumenf orr oad, SBS, SBR, EVA; Coupling agent is titanate coupling agent, silane coupling agent etc.The pitch that the present invention obtains has good flame retardant properties, can significantly reduce produce in asphalt heating and asphalt construction process glance coal, CO, NO
2deng obnoxious flavour discharge and there is the advantages such as material source is extensive, cost is low, preparation technology is simple.
Description
Technical field
The invention belongs to field of material technology, be specifically related to a kind of have fire-retardantly mix with heat the pitch reducing discharging effect.
Background technology
Along with the fast development of domestic motorway, vcehicular tunnel is also built more and more.Tunnel construction technology achieves development in an all-round way, but in tunnel, the research of paving material and technical elements is also relatively less.Bituminous pavement is comfortable owing to driving a vehicle, and noise is low, and sliding resistance is good, and the advantages such as easy-maintaining are applied in tunnel road surface just more and more.But asphalt can produce a large amount of smog in construction process, contaminate environment, and pitch is inflammable material, meet naked light, high heat is flammable, add ventilation condition in tunnel poor, cause bituminous pavement to catch fire if there is traffic accident, often cause larger loss of life and personal injury and property damage.Therefore domestic and international to flame-retardant pitch road surface carried out some research, also can reach the requirement of particular surroundings road pavement in tunnel while making bituminous pavement give full play to its own advantages.Current domestic conventional fire retardant is mostly halogen containing flame-retardant, although can play flame-retardant smoke inhibition effect to a certain extent, also there is the shortcomings such as degradation production toxicity is large, smog is large simultaneously.So from environmental protection and fire-retardant two aspects, in the urgent need to develop a kind of have fire-retardantly mix with heat the Cost of New Type Asphalt Pavement material reducing discharging effect.
Summary of the invention
The technical issues that need to address of the present invention are that to overcome tunnel sheet pavement generation traffic accident inflammable and in construction process, discharge the problem of the obnoxious flavoures such as smog, provide a kind of have fire-retardantly mix effect with heat, material source is extensive, cost is low, prepare the novel lens iron ore of the advantage such as simple and the composite fire-retardant modified asphalt of tin white cobalt.
In order to realize above-mentioned technical assignment, the present invention adopts following technical scheme to be achieved:
The present invention has and fire-retardantly mixes with heat the modifying asphalt reducing discharging effect, comprises by mass percentage:
Preparation technology of the present invention is simple, indoor and pitch source mill preparation method is as follows: according to above-mentioned raw materials and mass percent selective reaction raw material thereof; Add after specularite and tin white cobalt are dried in the coupling agent treatment liquid by ethanol as solvent and soak 2 hours, gentle agitation in immersion process, after drying, obtain specularite and the tin white cobalt composite modifier of surface modification; Basic asphalt is heated to 150 ± 5 DEG C, specularite after surface modification and tin white cobalt composite modifier are joined in the pitch of molten state, high speed shear instrument is adopted to stir 5 minutes with the rotating speed of 500rpm, stir 40 minutes with the rotating speed of 3000rpm again, can obtain that there is flame retardant efficiency and the hot modifying asphalt mixing reduction of discharging.Tin white cobalt of the present invention and specularite complex material also can add with breeze in Asphalt concrete mixing process, or pass through the porthole whole bag input of consumption in proportion of amalgamator.
The present invention is through large quantifier elimination and test, result shows, the modified flame-retardant pitch adopting the present invention to produce has good fire-retardant and heat and mixes reduction of discharging effect, and the present invention can be used as a kind of novel environment friendly fire-retardant modified asphalt for improving the technical problem of discharging smog in tunnel sheet pavement safety performance and construction process.
Embodiment
Below in conjunction with embodiment, the present invention is further described, but the invention is not restricted to these embodiments.
Embodiment 1
The raw material used for production product of the present invention 100kg and weight proportion thereof are:
Above-mentioned basic asphalt adopts SBS modifying asphalt; Above-mentioned tin white cobalt and specularite all adopt 2000 orders, also can be substituted by other order numbers; Coupling agent adopts silane coupling agent, and object carries out surface modification to tin white cobalt and specularite, improves the consistency of two kinds of mineral and pitch.
According to above-mentioned raw materials and mass percent selective reaction raw material thereof; Add after specularite and tin white cobalt are dried in the coupling agent treatment liquid by ethanol as solvent and soak 2 hours, gentle agitation in immersion process, after drying, obtain specularite and the tin white cobalt composite modifier of surface modification; Basic asphalt is heated to 150 ± 5 DEG C, specularite after surface modification and tin white cobalt composite modifier are joined in the pitch of molten state, high speed shear instrument is adopted to stir 5 minutes with the rotating speed of 500rpm, stir 40 minutes with the rotating speed of 3000rpm again, can obtain that there is flame retardant efficiency and the hot modifying asphalt mixing reduction of discharging.
Embodiment 2
The raw material used for production product of the present invention 100kg and weight proportion thereof are:
Above-mentioned basic asphalt adopts SBS modifying asphalt; Above-mentioned tin white cobalt and specularite all adopt 2000 orders, also can be substituted by other order numbers; Coupling agent adopts silane coupling agent, and its preparation method is identical with embodiment 1.
Embodiment 3
The raw material used for production product of the present invention 100kg and weight proportion thereof are:
Above-mentioned basic asphalt adopts SBS modifying asphalt; Above-mentioned tin white cobalt and specularite all adopt 2000 orders, also can be substituted by other order numbers; Coupling agent adopts silane coupling agent, and its preparation method is identical with embodiment 1.
Embodiment 4
The raw material used for production product of the present invention 100kg and weight proportion thereof are:
Above-mentioned basic asphalt adopts SBS modifying asphalt; Above-mentioned tin white cobalt and specularite all adopt 2000 orders, also can be substituted by other order numbers; Coupling agent adopts silane coupling agent, and its preparation method is identical with embodiment 1.
Embodiment 5
The raw material used for production product of the present invention 100kg and weight proportion thereof are:
Above-mentioned basic asphalt adopts SBS modifying asphalt; Above-mentioned tin white cobalt and specularite all adopt 2000 orders, also can be substituted by other order numbers; Coupling agent adopts silane coupling agent, and its preparation method is identical with embodiment 1.
Embodiment 6
The raw material used for production product of the present invention 100kg and weight proportion thereof are:
Above-mentioned basic asphalt adopts SBS modifying asphalt; Above-mentioned tin white cobalt and specularite all adopt 2000 orders, also can be substituted by other order numbers; Coupling agent adopts silane coupling agent, and its preparation method is identical with embodiment 1.
For determining that heat of the present invention mixes reduction performance and flame retarding and smoke suppressing properties, obnoxious flavour detection and limiting oxygen index(LOI) test are carried out to the modifying asphalt of the embodiment of the present invention 1 ~ 6, and carries out basic performance tests according to " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011).
1. pavement performance and flame retardant properties are tested
Table 1 Flame-retarded SBS Modified Asphalt performance index
As can be seen from above table, the pavement performance of the flame-retardant pitch prepared by the present invention all reaches the requirement that bi tumenf orr oad specifies, and oxygen index is greater than 23%, meets code requirement.
2. heat mixes reduction performance
Contriver is with reference to " stationary source glance coal measuring method ", and under the environment of 160 DEG C, carry out Asphalt Smoke Emission concentration determination, detected result is as shown in the table.
Table 2 asphalt smoke concentration test (mg/m
3)
As apparent from table 2 can, tin white cobalt and specularite composite modified asphalt have obvious heat and mix emission reduction effect, and Asphalt Smoke Emission concentration reduction of discharging rate can reach 10% ~ 30%.
The present invention is through large quantifier elimination and test, result shows, the modified flame-retardant pitch adopting the present invention to produce has good fire-retardant and heat and mixes reduction of discharging effect, and the present invention can be used as a kind of environmental protection flame retardant modifying asphalt for improving the technical problem of discharging smog in tunnel sheet pavement safety performance and construction process.
The above; it is only exemplary embodiments of the present invention; not any restriction is done to the present invention, every above embodiment is done according to invention technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (5)
1. there is heat and mix reduction of discharging and flame-retardant smoke inhibition effect modifying asphalt, be made up of following raw material and mass percent thereof:
Above-mentioned raw materials per-cent sum is 100%;
Described basic asphalt is common bi tumenf orr oad, SBS modifying asphalt, SBR modifying asphalt or EVA modifying asphalt; Described tin white cobalt and specularite are 600 orders, 2000 orders or 5000 orders, or two of different fineness kinds of mineral are all capable of being combined; Coupling agent is titanate coupling agent or silane coupling agent.
2. have heat as claimed in claim 1 and mix reduction of discharging and flame-retardant smoke inhibition effect modifying asphalt, it is characterized in that, each raw material and mass percent preferred version are:
Above-mentioned raw materials per-cent sum is 100%.
3. have heat as claimed in claim 1 and mix reduction of discharging and flame-retardant smoke inhibition effect modifying asphalt, it is characterized in that, each raw material and mass percent preferred version are:
4. prepare the modifying asphalt described in claim 1-3 any one claim, it is characterized in that, specifically follow following steps:
Step one: according to raw material and mass percent selective reaction raw material thereof;
Step 2: add after specularite and tin white cobalt being dried in the coupling agent treatment liquid by ethanol as solvent and soak 2 hours, gentle agitation in immersion process, obtains specularite and the tin white cobalt composite modifier of surface modification after drying;
Step 3: basic asphalt is heated to 150 ± 5 DEG C, specularite after surface modification and tin white cobalt composite modifier are joined in the pitch of molten state, high speed shear instrument is adopted to stir 5 minutes with the rotating speed of 500rpm, stir 40 minutes with the rotating speed of 3000rpm again, can obtain that there is flame retardant efficiency and the hot modifying asphalt mixing reduction of discharging.
5. the heat that has described in claim 1-3 any one claim is mixed to reduce discharging and is applied in the dissimilar ground surface material type of bituminous concrete AC, OGFC or SMA with flame-retardant smoke inhibition effect modifying asphalt.
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| CN201310488750.3A CN103554932B (en) | 2013-10-17 | 2013-10-17 | A kind of have fire-retardantly mix with heat the modifying asphalt reducing discharging effect |
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| CN201310488750.3A CN103554932B (en) | 2013-10-17 | 2013-10-17 | A kind of have fire-retardantly mix with heat the modifying asphalt reducing discharging effect |
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| CN103554932A CN103554932A (en) | 2014-02-05 |
| CN103554932B true CN103554932B (en) | 2015-09-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104262978B (en) * | 2014-10-23 | 2016-07-13 | 长安大学 | A kind of composite modified asphalt |
| CN104817849B (en) * | 2015-05-07 | 2016-09-28 | 天津市市政工程设计研究院 | A kind of inorganic modified Colophonium and preparation method thereof |
| CN106320127B (en) * | 2016-08-18 | 2018-09-07 | 陕西长大博源公路养护科技有限公司 | A kind of reclaimed bituminous pavement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1457999A (en) * | 1972-11-01 | 1976-12-08 | Ruberoid Ltd | Bitument-polymer composition |
| CN101817983A (en) * | 2009-02-27 | 2010-09-01 | 深圳市海川实业股份有限公司 | Warm mix flame-retardant modified asphalt and preparation method thereof |
| CN102040745A (en) * | 2009-10-20 | 2011-05-04 | 深圳市海川实业股份有限公司 | Asphalt flame-retardant modifier, and flame-retardant modified asphalt and preparation thereof |
| CN103013147A (en) * | 2013-01-12 | 2013-04-03 | 天津市市政工程设计研究院 | Flame-retardant modified asphalt and preparation method thereof |
| CN103044937A (en) * | 2013-01-12 | 2013-04-17 | 天津市市政工程设计研究院 | Flame-retardant smoke-suspension asphalt for environment-friendly road and preparation method of asphalt |
-
2013
- 2013-10-17 CN CN201310488750.3A patent/CN103554932B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1457999A (en) * | 1972-11-01 | 1976-12-08 | Ruberoid Ltd | Bitument-polymer composition |
| CN101817983A (en) * | 2009-02-27 | 2010-09-01 | 深圳市海川实业股份有限公司 | Warm mix flame-retardant modified asphalt and preparation method thereof |
| CN102040745A (en) * | 2009-10-20 | 2011-05-04 | 深圳市海川实业股份有限公司 | Asphalt flame-retardant modifier, and flame-retardant modified asphalt and preparation thereof |
| CN103013147A (en) * | 2013-01-12 | 2013-04-03 | 天津市市政工程设计研究院 | Flame-retardant modified asphalt and preparation method thereof |
| CN103044937A (en) * | 2013-01-12 | 2013-04-17 | 天津市市政工程设计研究院 | Flame-retardant smoke-suspension asphalt for environment-friendly road and preparation method of asphalt |
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Inventor after: Wang Chaohui Inventor after: Feng Dongjie Inventor after: Fan Qiaojuan Inventor after: Wang Xinqi Inventor after: Li Yanwei Inventor after: Ge Juan Inventor before: Wang Chaohui Inventor before: Hou Mingye Inventor before: Li Yanwei |
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Free format text: CORRECT: INVENTOR; FROM: WANG CHAOHUI HOU MINGYE LI YANWEI TO: WANG CHAOHUI FENG DONGJIE FAN QIAOJUAN WANG XINQI LI YANWEI GE JUAN |
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