CN104804446A - Nano material compound waste crumb rubber modified asphalt for heavy traffic road and preparation process thereof - Google Patents
Nano material compound waste crumb rubber modified asphalt for heavy traffic road and preparation process thereof Download PDFInfo
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- CN104804446A CN104804446A CN201510234592.8A CN201510234592A CN104804446A CN 104804446 A CN104804446 A CN 104804446A CN 201510234592 A CN201510234592 A CN 201510234592A CN 104804446 A CN104804446 A CN 104804446A
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- asphalt
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Abstract
The invention discloses a nano material compound waste crumb rubber modified asphalt for a heavy traffic road. The nano material compound waste crumb rubber modified asphalt is prepared from matrix asphalt, waste rubber powder and nano titanium dioxide, wherein the content of the waste rubber powder accounts for 8 to 30wt% of the matrix asphalt, and the content of the nano titanium dioxide accounts for 0.08 to 0.3wt% of the matrix asphalt. A preparation method of the nano material compound waste crumb rubber modified asphalt comprises the following steps of (1) heating the matrix asphalt to 35 to 160 DEG C, slowly adding the weighed nano titanium dioxide, and performing high-speed shearing for 10 to 30 minutes so as to ensure that the matrix asphalt and the nano titanium dioxide are uniformly mixed; (2) heating the asphalt mixture obtained in the step 1 to 180 to 215 DEG C, slowly adding the weighed waste rubber powder, and performing high-speed shearing for 90 to 100 minutes, thereby preparing the nano material compound waste crumb rubber modified asphalt. The prepared modified asphalt is capable of improving the asphalt storage stability, the asphalt temperature sensitivity (anti-track property at a high temperature and anti-cracking property at a low temperature) and the ultraviolet radiation aging resistance, further is capable of effectively decomposing nitric oxides in automobile exhaust, and has an air purification effect and favorable social and environment-friendly benefits.
Description
Technical field
The present invention relates to composite waste rubber powder modified asphalt of a kind of nano material for Heavy Traffic road and preparation method thereof, belong to road pavement field of material technology
Background technology
Junked tire is processed into the shoddy of more than 20 orders, adds the shoddy of a certain amount of ratio in matrix pitch, fully reaction is rear under the high temperature conditions obtains rubber asphalt.Because rubber is a kind of macromolecular compound, except high resilience, also there is very high autohension and mutual viscosity, when after rubber powder and pitch melt into one, the viscosity of pitch obviously increases, be conducive to the agglutinate cohesion improving asphalt, pitch has the feature of caoutchouc elasticity and flexibility thus the high-temperature stability of raising rubber asphalt concrete and low-temperature cracking-resistance simultaneously.Facts have proved, application of rubber asphalt not only can reach the road effect of other modifying asphalts such as SBS in bituminous pavement, also effectively solves the recycling problem of junked tire.
The stability in storage of rubber asphalt becomes a technical barrier in application, and because rubber powder density is greater than the density of matrix pitch, rubber asphalt rubber powder in use and storage process sinks to causing segregation gradually, thus difficulty or ease reach satisfied road effect.After rubber asphalt concrete paves, along with uviolizing, rubber asphalt gradually aging reduction low-temperature performance causes easily occurring the diseases such as cracking.For improving the storage stability of rubber asphalt, temperature sensitivity (high temperature Rut resistance, low temperature cracking resistance) and anti-ultraviolet aging performance, attempt using nano material to carry out composite to rubber asphalt.It is nanometer titanium dioxide that the present invention carries out composite nano material to rubber asphalt.
Nanometer titanium dioxide, also known as nano titanium oxide.From size, usually produce the size of the fine particles of physicochemical property noticeable change at 0.1 micron (titanium dioxide namely below 100 nanometers) below, its outward appearance is fluffy white powder.Nanometer titanium dioxide uniform particle sizes, good dispersity; There is the transparency of very strong photochemical catalysis, shielding ultraviolet rays ability and excellence; The intensity of the resistance of aging of product, weathering resistance and product can be improved; Can oxynitride effectively in decomposing automobile exhaust.
Along with the development of China's transportation industry, motor vehicle exhaust has become China's air-polluting main source, and research and development environment-friendly type ground surface material has also become the inexorable trend of road surface type material.
Summary of the invention
Object of the present invention is just to provide composite waste rubber powder modified asphalt of a kind of nano material and preparation method thereof, improves stability and the anti-ultraviolet aging ability of rubber asphalt, thus extends the weather resistance of rubber asphalt; Can oxynitride effectively in decomposing automobile exhaust, purify air.
For achieving the above object, patent of the present invention adopts following technical scheme: the composite waste rubber powder modified asphalt of a kind of nano material, be made up of matrix pitch, shoddy, nanometer titanium dioxide, wherein shoddy content is 8% ~ 30% of matrix pitch weight, and Nanometer Titanium Dioxide powder content is 0.08% ~ 0.3% of matrix pitch weight.
Preferably consist of: shoddy content is 8% ~ 30% of matrix pitch weight, Nanometer Titanium Dioxide powder content is 0.08% ~ 0.3% of matrix pitch weight.
Preferably, the penetration degree of described matrix pitch is 40 ~ 100dmm, softening temperature is 40 DEG C ~ 50 DEG C.
Preferably, the junked tire that described shoddy is made up of natural rubber, styrene-butadiene rubber(SBR), cis-1,4-polybutadiene rubber or polyisoprene rubber is obtained through pulverizing, and the rubber powder granularity of described shoddy is advisable between 20 ~ 80 orders.
Preferably, described nanometer titanium dioxide is Rutile type Titanium Dioxide, and outward appearance is fluffy white powder, rutile content more than 99.8%, and described nanometer titanium dioxide particle diameter is advisable between 15 ~ 100nm.
Prepare the method for the composite waste rubber powder modified asphalt of nano material, comprise the steps:
(1) matrix pitch is heated to 135 DEG C ~ 160 DEG C, slowly adds load weighted nanometer titanium dioxide, high speed shear 10 ~ 30 minutes, makes it mix;
(2) asphalt mixture of step 1 is heated to 180 DEG C ~ 215 DEG C, slowly adds load weighted shoddy, high speed shear 90 ~ 100 minutes, the composite waste rubber powder modified asphalt of nano material can be prepared.
In matrix pitch, add the interpolation time controling of nanometer titanium dioxide in described step 1 in 5 minutes, the mixture temperature after adding is lower than 180 DEG C.
Described step 1,2 high speed shears shearing rates are 3000 ~ 5000r/min.
Beneficial effect: the composite waste rubber powder modified asphalt of a kind of nano material of the present invention adopts above technical scheme compared with prior art, has technique effect:
1, be uniformly distributed nanometer titanium dioxide in product, the storage stability of product can be improved;
2, the anti-ultraviolet aging ability of product effectively improves, and extends the work-ing life on road surface;
3, product can oxynitride effectively in decomposing automobile exhaust, has the effect purified air;
4, product temperature sensitivity be improved significantly, its high temperature Rut resistance, low temperature anti-cracking performance promote significantly.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, but therefore do not limit the present invention among described scope of embodiments, do not deviating under technical solution prerequisite of the present invention, any change that those of ordinary skill in the art made for the present invention easily realize or change all will fall within right of the present invention.
Embodiment 1: the composite waste rubber powder modified asphalt of a kind of nano material, be made up of the raw material of following mass parts:
Matrix pitch 100kg; Nanometer titanium dioxide 0.08kg; Shoddy 8kg;
The preparation method of the composite waste rubber powder modified asphalt of nano material, is characterized in that comprising the following steps:
1), each component is taken by quality proportioning;
2), by matrix pitch be heated to 160 DEG C, slowly add load weighted nanometer titanium dioxide, high speed shear 30 minutes, makes it mix;
3), by the asphalt mixture of step 2 be heated to 205 DEG C, slowly add load weighted shoddy, high speed shear 120 minutes, the composite waste rubber powder modified asphalt of nano material can be prepared.
Embodiment 2: the composite waste rubber powder modified asphalt of a kind of nano material, be made up of the raw material of following mass parts:
Matrix pitch 100 parts; Nanometer titanium dioxide 0.15 part; Shoddy 15 parts;
Preparation method is with embodiment 1.
Embodiment 3: the composite waste rubber powder modified asphalt of a kind of nano material, be made up of the raw material of following mass parts:
Matrix pitch 100 parts; Nanometer titanium dioxide 0.3 part; Shoddy 30 parts;
Preparation method is with embodiment 1.
Effect test
Matrix pitch adopts AH-70, shoddy adopts 26 objects, nanometer titanium dioxide adopts particle diameter 30nm's, the composite waste rubber powder modified asphalt of nano material is prepared according to example 1,2,3 method, the testing inspection of relevant item is carried out according to " standard specification for construction and acceptance of highway asphalt pavement " (JTGF40-2004), test method is according to " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011), and detected result is as shown in table 1.
Claims (7)
1. the composite waste rubber powder modified asphalt of the nano material for Heavy Traffic road, it is characterized in that: be made up of matrix pitch, shoddy, nanometer titanium dioxide, wherein shoddy content is 8% ~ 30% of matrix pitch weight, and Nanometer Titanium Dioxide powder content is 0.08% ~ 0.3% of matrix pitch weight.
2. the composite waste rubber powder modified asphalt of nano material according to claim 1, is characterized in that: the penetration degree of described matrix pitch is 40 ~ 100dmm, softening temperature is 40 DEG C ~ 50 DEG C.
3. the composite waste rubber powder modified asphalt of nano material according to claim 1, it is characterized in that: the junked tire that described shoddy is made up of natural rubber, styrene-butadiene rubber(SBR), cis-1,4-polybutadiene rubber or polyisoprene rubber is obtained through pulverizing, the rubber powder granularity of described shoddy is between 20 ~ 80 orders.
4. the composite waste rubber powder modified asphalt of nano material according to claim 1, it is characterized in that: described nanometer titanium dioxide is Rutile type Titanium Dioxide, outward appearance is fluffy white powder, rutile content more than 99.8%, and described nanometer titanium dioxide particle diameter is between 15 ~ 100nm.
5. the preparation method of the composite waste rubber powder modified asphalt of nano material according to claims 1 to 4, is characterized in that: comprise the steps:
(1) matrix pitch is heated to 135 DEG C ~ 160 DEG C, slowly adds load weighted nanometer titanium dioxide, high speed shear 10 ~ 30 minutes, makes it mix;
(2) asphalt mixture of step 1 is heated to 180 DEG C ~ 215 DEG C, slowly adds load weighted shoddy, high speed shear 90 ~ 100 minutes, the composite waste rubber powder modified asphalt of nano material can be prepared.
6. the preparation method of the composite waste rubber powder modified asphalt of nano material according to claim 5, is characterized in that: in matrix pitch, add the interpolation time controling of nanometer titanium dioxide in described step 1 in 5min, the mixture temperature after adding is lower than 180 DEG C.
7. the preparation method of the composite waste rubber powder modified asphalt of nano material according to claim 5, is characterized in that: in described step 1,2, high-speed shearing machine shearing rate is 3000 ~ 5000r/min.
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| CN201510234592.8A CN104804446A (en) | 2015-05-11 | 2015-05-11 | Nano material compound waste crumb rubber modified asphalt for heavy traffic road and preparation process thereof |
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| CN201510234592.8A CN104804446A (en) | 2015-05-11 | 2015-05-11 | Nano material compound waste crumb rubber modified asphalt for heavy traffic road and preparation process thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419355A (en) * | 2015-11-11 | 2016-03-23 | 长安大学 | Superfine waste rubber powder-nanometer material compound modified asphalt and preparation method thereof |
| CN106977959A (en) * | 2017-03-28 | 2017-07-25 | 常州大学 | A kind of preparation method of cleaning of off-gas type modified pitch |
| CN110105778A (en) * | 2019-04-12 | 2019-08-09 | 重庆市市政设计研究院 | Nanocomposite modified pitch, preparation method and bituminous concrete |
| CN111793368A (en) * | 2020-07-28 | 2020-10-20 | 长安大学 | Novel rubber powder composite modified asphalt and preparation method thereof |
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| CN101265363A (en) * | 2007-11-29 | 2008-09-17 | 陕西长大博源公路养护科技有限公司 | Waste and old rubber powder modifying asphalt and preparation method thereof |
| CN101703889A (en) * | 2009-10-28 | 2010-05-12 | 东南大学 | Method for preparing rubber powder-supported pavement automobile exhaust degrading composite |
| RU2462489C2 (en) * | 2010-11-16 | 2012-09-27 | Федеральное государственное образовательное учреждение высшего профессионального образования "Казанский государственный архитектурно-строительный университет" (КазГАСУ) | Nanomodified asphalt-rubber composition and production method thereof |
| CN103374231A (en) * | 2012-04-13 | 2013-10-30 | 鲁春蕊 | Nano-particle reinforced pavement asphalt and preparation thereof |
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2015
- 2015-05-11 CN CN201510234592.8A patent/CN104804446A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265363A (en) * | 2007-11-29 | 2008-09-17 | 陕西长大博源公路养护科技有限公司 | Waste and old rubber powder modifying asphalt and preparation method thereof |
| CN101703889A (en) * | 2009-10-28 | 2010-05-12 | 东南大学 | Method for preparing rubber powder-supported pavement automobile exhaust degrading composite |
| RU2462489C2 (en) * | 2010-11-16 | 2012-09-27 | Федеральное государственное образовательное учреждение высшего профессионального образования "Казанский государственный архитектурно-строительный университет" (КазГАСУ) | Nanomodified asphalt-rubber composition and production method thereof |
| CN103374231A (en) * | 2012-04-13 | 2013-10-30 | 鲁春蕊 | Nano-particle reinforced pavement asphalt and preparation thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419355A (en) * | 2015-11-11 | 2016-03-23 | 长安大学 | Superfine waste rubber powder-nanometer material compound modified asphalt and preparation method thereof |
| CN106977959A (en) * | 2017-03-28 | 2017-07-25 | 常州大学 | A kind of preparation method of cleaning of off-gas type modified pitch |
| CN110105778A (en) * | 2019-04-12 | 2019-08-09 | 重庆市市政设计研究院 | Nanocomposite modified pitch, preparation method and bituminous concrete |
| CN111793368A (en) * | 2020-07-28 | 2020-10-20 | 长安大学 | Novel rubber powder composite modified asphalt and preparation method thereof |
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Application publication date: 20150729 |