CN104743966A - Asphalt mixture with superstrong anti-rutting performance - Google Patents
Asphalt mixture with superstrong anti-rutting performance Download PDFInfo
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- CN104743966A CN104743966A CN201510150987.XA CN201510150987A CN104743966A CN 104743966 A CN104743966 A CN 104743966A CN 201510150987 A CN201510150987 A CN 201510150987A CN 104743966 A CN104743966 A CN 104743966A
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Abstract
The invention relates to an asphalt mixture with superstrong anti-rutting performance, and particularly relates to an asphalt mixture which has especially excellent anti-rutting performance at a high temperature, and is especially applicable to the field of heavy-duty traffic. The asphalt mixture comprises aggregate, cement, modified asphalt and an anti-rutting agent, and the aggregate comprises crude aggregate and fine aggregate; and the specifications of the aggregate are respectively 19-26.5mm, 11-19mm, 5-11mm, 3-5mm and 0-3mm, and the ratios of the aggregates and the cement accounting for total mass of the aggregates and cement is 12:33:25:10:18:2. The preparation method of the asphalt mixture comprises the following steps: 1) preparing modified asphalt; 2) mixing the aggregates with cement, and adding the anti-rutting agent; and 3) weighing the modified asphalt obtained in the step 1), which accounts for 4.38% of the mass of the aggregates and the cement, and placing into a mixing cylinder and stirring for 40-45s, to obtain the asphalt mixture with superstrong anti-rutting performance. The water stability and low-temperature performance can meet the requirement of an expressway, and the high-temperature stability performance is especially excellent.
Description
Technical field
What the asphalt of a kind of superpower anti-rut behavior of the present invention related to is the asphalt that a kind of high temperature Rut resistance deformability is excellent especially, is highly suitable for Heavy Traffic field.
Background technology
Help Pakistani trunk lines of national expressways N5, N55 road event, being the Important Economic band of country of Pakistan, is the traffic main artery of transporting goods and materials in Pakistani fast development, without water route transport system.Along with the quick growth of vehicle transport industry, overloading is particularly serious, and the traffic pressure of project increases severely.And project location is positioned at Pakistani temperature Hong Feng district year extreme temperature up to more than 48 DEG C, pavement temperature has broken through 70 DEG C, and scene occurs that rut disease that about 20cm is dark has had a strong impact on the safety of people.For this reason, the Rut resistance of road pavement bituminous texture layer and anti-shear ability require high.
Summary of the invention
The object of the invention is the asphalt that a kind of superpower anti-rut behavior is provided for above-mentioned weak point.Such pitch asphalt, under standard wheels press strip part, 60 DEG C of dynamic stabilities about 20000 times/mm, about 12000 times/mm when 70 DEG C; About 6000 times/mm when 80 DEG C, meets the high-temperature behavior requirement of existing motorway to asphalt far away.
A kind of asphalt of superpower anti-rut behavior takes following technical scheme to realize:
A kind of asphalt of superpower anti-rut behavior by gathering materials, cement, modifying asphalt and anti-rut agent form, described in gather materials and comprise coarse aggregate and fine aggregate; Described specification of gathering materials is respectively 19 ~ 26.5mm, 11 ~ 19mm, 5 ~ 11mm, 3 ~ 5mm and 0 ~ 3mm, and above-mentioned each shelves gather materials and cement accounts for and to gather materials and cement total mass ratio is 12:33:25:10:18:2.
Described modifying asphalt adopts SBS modifying asphalt.
The preparation method of the asphalt of superpower anti-rut behavior comprises the steps:
1) modifying asphalt is prepared
Properties-correcting agent is mixed petroleum pitch, and the volume of described properties-correcting agent is 5.0% of oil pitch quality, grinds 4 times by colloidal mill, and grow wherein, obtain finished product asphaltum, be provided with agitator for the modifying asphalt storage tank depositing modifying asphalt, emanate to prevent modifying asphalt;
2) will gather materials to be transported to and mix in cylinder, after being heated to 175 ~ 185 DEG C, what to be gathering materials of 19 ~ 26.5mm, 11 ~ 19mm, 5 ~ 11mm, 3 ~ 5mm and 0 ~ 3mm and cement by specification dropped into batching plant according to mineral aggregate ratio 12:33:25:10:18:2 mixes in cylinder, dry mixing 10 ~ 15 seconds, in the process, add account for gather materials and cement total mass 0.3% anti-rut agent;
3) take account for gather materials and cement quality 4.38% step 1) in the modifying asphalt of gained, put into and mix cylinder, stir 40 ~ 45s, obtain the asphalt of superpower anti-rut behavior.
Properties-correcting agent described in step 1) adopts SBS modifier.
Petroleum pitch described in step 1) adopts No. 50 bi tumenf orr oads.
Step 2) described in step 2) described in mineral aggregate ratio be account for gather materials and the per-cent of cement total mass.
In step 3), modifying asphalt accounts for 4.2% of quality of asphalt mixtures.
Advantage of the present invention: a kind of asphalt of superpower anti-rut behavior, it is the asphalt that a kind of high temperature Rut resistance deformability is excellent especially, under guarantee water stability and low-temperature performance meet the prerequisite of motorway requirement, its high temperature stability performance is excellent especially, is highly suitable for Heavy Traffic field.Under standard wheels press strip part, 60 DEG C of dynamic stabilities about 20000 times/mm, about 12000 times/mm when 70 DEG C; About 6000 times/mm when 80 DEG C, can meet large and heavily loaded, that overloaded vehicle the is more road of the volume of traffic, greatly improve the work-ing life of road.
Accompanying drawing explanation
Below with reference to accompanying drawing, the invention will be further described:
Fig. 1 is the production graduation curve figure of high performance asphalt of the present invention.
Embodiment
With reference to accompanying drawing 1, the asphalt of a kind of superpower anti-rut behavior of the present invention by gathering materials, cement, modifying asphalt and anti-rut agent form, described in gather materials and comprise coarse aggregate and fine aggregate; Described specification of gathering materials is respectively 19 ~ 26.5mm, 11 ~ 19mm, 5 ~ 11mm, 3 ~ 5mm, 0 ~ 3mm, and above-mentioned each shelves gather materials and cement accounts for and to gather materials and cement total mass ratio is 12:33:25:10:18:2.
Described modifying asphalt adopts SBS modifying asphalt.
Above-mentioned each shelves gather materials and the mass ratio of cement as shown in the table.
Table 1 gathers materials and cement quality ratio
| Mineral aggregate specification | 19~26.5mm | 11~19mm | 5~11mm | 3~5mm | 0~3mm | Cement |
| Ratio (%) | 12 | 33 | 25 | 10 | 18 | 2 |
The preparation method of the asphalt of superpower anti-rut behavior comprises the steps:
1) modifying asphalt is prepared
Properties-correcting agent is mixed petroleum pitch, and the volume of described properties-correcting agent is 5.0% of oil pitch quality, grinds 4 times by colloidal mill, and grow wherein, obtain finished product asphaltum, be provided with agitator for the modifying asphalt storage tank depositing modifying asphalt, emanate to prevent modifying asphalt;
2) will gather materials to be transported to and mix in cylinder, after being heated to 175 ~ 185 DEG C, what to be gathering materials of 19 ~ 26.5mm, 11 ~ 19mm, 5 ~ 11mm, 3 ~ 5mm and 0 ~ 3mm and cement by specification dropped into batching plant according to mineral aggregate ratio 12:33:25:10:18:2 mixes in cylinder, dry mixing 10 ~ 15 seconds, in the process, add account for gather materials and cement total mass 0.3% anti-rut agent;
3) take account for gather materials and cement quality 4.38% step 1) in the modifying asphalt of gained, put into and mix cylinder, stir 40 ~ 45s, obtain the asphalt of superpower anti-rut behavior.
Properties-correcting agent described in step 1) adopts SBS modifier.
Petroleum pitch described in step 1) adopts No. 50 bi tumenf orr oads.
Step 2) described in mineral aggregate ratio be account for gather materials and the per-cent of cement total mass.
In step 3), modifying asphalt accounts for 4.2% of quality of asphalt mixtures.
The performance index of No. 50 matrix pitches and SBS modifying asphalt are as shown in the table:
Table 3 No. 50 road oil matrix pitch assays
Table 4 SBS modifying asphalt detected result
Shown in specification of gathering materials asphalt each shelves used of a kind of superpower anti-rut behavior of the present invention sees the following form.
Table 5 hot aggregate bin gathers materials percent of pass
Table 6 production mix proportion formate gradation composition
A kind of volume index character of asphalt of superpower anti-rut behavior is shown in Table 7.
Table 7 asphalt mixture volume character index
The asphalt immersion Marshall of superpower anti-rut behavior and employing AASHTO T283 test method record the freeze-thaw split strength ratio of compound, and test-results is in table 8 and table 9.
Table 8 water stability and high-temperature behavior assay
Table 9 AASHTO T283 test-results
A kind of asphalt of superpower anti-rut behavior under standard wheels press strip part, 60 DEG C of dynamic stabilities about 20000 times/mm, about 12000 times/mm when 70 DEG C; About 6000 times/mm when 80 DEG C, can meet large and heavily loaded, that overloaded vehicle the is more road of the volume of traffic, greatly improve the work-ing life of road.
Claims (7)
1. an asphalt for superpower anti-rut behavior, is characterized in that: by gathering materials, cement, modifying asphalt and anti-rut agent form, described in gather materials and comprise coarse aggregate and fine aggregate; Described specification of gathering materials is respectively 19 ~ 26.5mm, 11 ~ 19mm, 5 ~ 11mm, 3 ~ 5mm and 0 ~ 3mm, and above-mentioned each shelves gather materials and cement accounts for and to gather materials and cement total mass ratio is 12:33:25:10:18:2.
2. the asphalt of superpower anti-rut behavior according to claim 1, is characterized in that: described modifying asphalt adopts SBS modifying asphalt.
3. the preparation method of the asphalt of superpower anti-rut behavior according to claim 1, is characterized in that, comprise the steps:
1) modifying asphalt is prepared;
Properties-correcting agent is mixed petroleum pitch, and the volume of described properties-correcting agent is 5.0% of oil pitch quality, grinds 4 times by colloidal mill, and grow wherein, obtain finished product asphaltum, be provided with agitator for the modifying asphalt storage tank depositing modifying asphalt, emanate to prevent modifying asphalt;
2) will gather materials to be transported to and mix in cylinder, after being heated to 175 ~ 185 DEG C, what to be gathering materials of 19 ~ 26.5mm, 11 ~ 19mm, 5 ~ 11mm, 3 ~ 5mm and 0 ~ 3mm and cement by specification dropped into batching plant according to mineral aggregate ratio 12:33:25:10:18:2 mixes in cylinder, dry mixing 10 ~ 15 seconds, in the process, add account for gather materials and cement total mass 0.3% anti-rut agent;
3) take account for gather materials and cement quality 4.38% step 1) in the modifying asphalt of gained, put into and mix cylinder, stir 40 ~ 45s, obtain the asphalt of superpower anti-rut behavior.
4. the preparation method of the asphalt of superpower anti-rut behavior according to claim 3, is characterized in that: properties-correcting agent described in step 1) adopts SBS modifier.
5. the preparation method of the asphalt of superpower anti-rut behavior according to claim 3, is characterized in that: petroleum pitch described in step 1) adopts No. 50 bi tumenf orr oads.
6. the preparation method of the asphalt of superpower anti-rut behavior according to claim 3, is characterized in that: step 2) described in mineral aggregate ratio be account for gather materials and the per-cent of cement total mass.
7. the preparation method of the asphalt of superpower anti-rut behavior according to claim 3, is characterized in that: in step 3), modifying asphalt accounts for 4.2% of quality of asphalt mixtures.
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| CN201510150987.XA CN104743966A (en) | 2015-04-01 | 2015-04-01 | Asphalt mixture with superstrong anti-rutting performance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040546A (en) * | 2015-08-13 | 2015-11-11 | 苏交科集团股份有限公司 | Super adhering wearing layer roadway maintenance method |
| CN106083177A (en) * | 2016-06-12 | 2016-11-09 | 苏交科集团股份有限公司 | Foam warm mix SMA 13 asphalt, preparation method and method of evaluating performance |
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| CN102910861A (en) * | 2012-09-26 | 2013-02-06 | 天津市市政工程研究院 | Asphalt mixture with high anti-rut capability and preparation method therefor |
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| CN104194365A (en) * | 2014-09-11 | 2014-12-10 | 广西国创道路材料有限公司 | Compound SBS (styrene butadiene styrene) modified asphalt and production process thereof |
| CN104194362A (en) * | 2014-09-02 | 2014-12-10 | 福建师范大学 | Waste polymer compound asphalt anti-rutting agent as well as preparation method and application thereof |
| CN104402311A (en) * | 2014-10-20 | 2015-03-11 | 山西省交通科学研究院 | Rubber powder modified asphalt mixture and preparation method thereof |
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2015
- 2015-04-01 CN CN201510150987.XA patent/CN104743966A/en active Pending
Patent Citations (6)
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| KR20050030941A (en) * | 2005-03-09 | 2005-03-31 | 황익현 | Material to improve quality of asphalt concrete, and the manufacturing method thereof |
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| CN102910861A (en) * | 2012-09-26 | 2013-02-06 | 天津市市政工程研究院 | Asphalt mixture with high anti-rut capability and preparation method therefor |
| CN104194362A (en) * | 2014-09-02 | 2014-12-10 | 福建师范大学 | Waste polymer compound asphalt anti-rutting agent as well as preparation method and application thereof |
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| CN105040546A (en) * | 2015-08-13 | 2015-11-11 | 苏交科集团股份有限公司 | Super adhering wearing layer roadway maintenance method |
| CN106083177A (en) * | 2016-06-12 | 2016-11-09 | 苏交科集团股份有限公司 | Foam warm mix SMA 13 asphalt, preparation method and method of evaluating performance |
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Application publication date: 20150701 |