CN102924936A - Bituminous cold reclaiming agent and application of bituminous cold reclaiming agent in cold reclaiming of bituminous concrete - Google Patents
Bituminous cold reclaiming agent and application of bituminous cold reclaiming agent in cold reclaiming of bituminous concrete Download PDFInfo
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- CN102924936A CN102924936A CN2012104449881A CN201210444988A CN102924936A CN 102924936 A CN102924936 A CN 102924936A CN 2012104449881 A CN2012104449881 A CN 2012104449881A CN 201210444988 A CN201210444988 A CN 201210444988A CN 102924936 A CN102924936 A CN 102924936A
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Abstract
The invention relates to a bituminous cold reclaiming agent and application of the bituminous cold reclaiming agent in cold reclaiming of bituminous concrete. The bituminous cold reclaiming agent comprises an impregnating compound and a desiccating agent. The bituminous cold reclaiming agent is strong in permeation and infiltration force and enables aging bitumen in reclaimed asphalt pavement (RAP) to be activated and recover performance of the bitumen, and then the desiccating agent is added to volatilize diluents in an infiltration material to solidify the infiltration material to form strength. Finally, the void ratio of reclaimed asphalt mixture is lower than 6%, strength performance, water stabilizing performance, high-temperature performance and low-temperature performance achieve performance indexes of hot-mix asphalt mixture, and operating requirements of upper and middle surface layers of asphalt roads in each level are met. According to the invention, the method is simple and easy to operate and energy-saving, the used bituminous concrete for each structure layer of asphalt concrete pavements in each level can be completely used and reused under the condition that composite cost is not greatly increased, and wide popularization and application values are achieved.
Description
Technical field
The present invention relates to a kind of asphalt cold recycling agent and the application in the cold recycled asphalt concrete thereof, belong to the concrete cold regeneration techniques of the aged asphalt field of reclaiming.
Background technology
The Domestic ﹠ Overseas Asphalt Pavement regeneration techniques is divided into hot in-plant reclaimed, in-situ heat regeneration, the cold regeneration of plantmix, cold in place recycling, wherein the Bituminous Pavement Cold Regeneration technology mainly is with modified emulsifying asphalt, foam asphalt, cement is agglutinate, these materials do not have effect substantially to the asphalt-regenerating effect of old asphalt mixture, just utilized the aggregate of asphalt, and the binder (aged asphalt) that important value is arranged does not play the vital role that it should rise in reworked material, this has caused the porosity of reclaimed asphalt mixture high, low strength can't reach the service requirements of the upper surface layer of bituminous pavement.According to " asphalt highway regeneration techniques standard " regulation that in July, 2008, the Ministry of Communications issued, at present cold recycled asphalt mixture can be used for the Sub of motorway and I and II asphalt highway and basic unit, subbase, and three, the surface layer (need do seal) of Class IV highway bituminous pavement.
Summary of the invention
The object of the present invention is to provide the cold regenerator of the aged asphalt in a kind of recycling aged asphalt concrete (RAP).
Another object of the present invention is to utilize the application of asphalt cold recycling agent in the cold recycled asphalt concrete, aged asphalt in the aged asphalt compound (RAP) is played regeneration, described aged asphalt compound is reused in each layer of structure of each grade bitumen concrete road surface.
The objective of the invention is to realize by such technical scheme, a kind of asphalt cold recycling agent, comprise treating compound and siccative, it is characterized in that: described treating compound is made of rubber oil, 120# solvent oil, 0# diesel oil, synthetic rubber SBS, C9 petroleum resin, the percentage composition of each material is the mass percent that accounts for whole material total amounts by it, wherein:
Rubber oil 10%～40% 120# solvent oil 20%～40%
0# diesel oil 5～20% synthetic rubber SBS 10%～30%
C9 petroleum resin 5%～25%
Described siccative is made of ethyl acetate, amine hydroxybenzene, and by ethyl acetate: amine hydroxybenzene is 30:70～70:30 preparation, and wherein: the percentage composition of each material is the mass percent that accounts for whole material total amounts by it.
To add again described siccative behind the aged asphalt compound of described treating compound mix after the milling at normal temperatures and pressures.
The add-on of wherein said treating compound infiltrates mix in 1.5: 1～1: 1.5 ratio of aged asphalt in described treating compound and the described aged asphalt compound becomes the infiltration material.
The add-on of described siccative adds in described siccative and 1: 4～1: 5 ratio of described treating compound.
Another object of the present invention is to realize by such technical scheme, the application of a kind of asphalt cold recycling agent in the cold recycled asphalt concrete, it is characterized in that: at normal temperatures and pressures described treating compound is joined in the aged asphalt compound after the milling, in treating compound: the ratio of the aged asphalt in the aged asphalt compound=1.5: 1～1: 1.5 infiltrates mix to be become and infiltrates material, stack and store after 6～10 days, described siccative is mixed to join under the normal temperature and pressure in the described infiltration material according to the above ratio to solvent evaporates wherein, namely gets the cold recycled asphalt concrete.
The content of the aged asphalt in the aged asphalt compound of the present invention accounts for 3%～6% of described aged asphalt compound.
Aged asphalt compound (RAP) size range≤16mm after the described milling.
On demand described cold recycled asphalt mixture normal temperature is paved in the desired structure layer of each grade bitumen concrete road surface such as middle upper layer of bituminous concrete pavement of the middle upper layer of bituminous pavement of middle upper layer, the bituminous concrete pavement below the Class II highway of bituminous concrete pavement of common road and motorway and Class I highway, form the bituminous concrete aspect through rolling.
Owing to having adopted technique scheme, the present invention has advantages of as follows:
(1) the used asphalt cold recycling agent infiltration of the present invention infiltration power is strong, make the middle aged asphalt of aged asphalt compound (RAP) be activated, recover the performance of pitch, adding siccative is volatilized the thinner that infiltrates in the material again, make the infiltration material fixed, form intensity, finally reach the performance index that the Air Voids of Asphalt Mixtures of regeneration＜6%, strength property, water stability, high temperature performance reach hot-mix asphalt mixture, satisfy the service requirements of the upper surface layer of each standard highway bituminous pavement.
(2) the present invention utilizes asphalt cold recycling agent through infiltrating and dry two-step approach cold recycled asphalt concrete, saved the energy, in the situation that comprehensive cost is not than leap ahead, can with old asphalt concrete 100% ground utilization and again for each each layer of structure of grade bitumen concrete road surface, have wide application value.
Embodiment
Only as explanation of the present invention, proportion relation wherein all by quality ratio for following examples; Per-cent all by percentage to the quality, also all can change weight g, Kg or other weight unit into without specified otherwise.
Mode by embodiment further specifies the present invention, does not therefore limit the present invention within the described scope of embodiments.
Embodiment 1
A kind of asphalt cold recycling agent comprises treating compound and siccative:
The component percentage composition of described treating compound is:
Rubber oil 25% 120# solvent oil 30%
0# diesel oil 8% synthetic rubber SBS 15%
C9 petroleum resin 22%
The component percentage composition of described siccative is:
Ethyl acetate 40% amine hydroxybenzene 60%
Utilize the application of asphalt cold recycling agent in the cold recycled asphalt concrete, the steps include: the aged asphalt compound (RAP) after the milling at normal temperatures and pressures in treating compound: the ratio treating compound mix of aged asphalt=1.3: 1, described aged asphalt compound is become infiltrate material, stack and store after 8 days, with described siccative and described treating compound by in 1: 4 described infiltration material of proportioning normal temperature and pressure mix to wherein solvent evaporates, obtain cold recycled asphalt mixture; The content of wherein said aged asphalt accounts for 5% of described aged asphalt compound (RAP).
Aged asphalt compound (RAP) size range≤16mm after the milling of the present invention;
Described aged asphalt content obtains according to the test of JTG E20-2011 T0722 " highway engineering pitch and Asphalt Mixture Experiment rules " asphalt extraction test method.
With the pave middle upper layer of bituminous concrete pavement of motorway of described cold recycled asphalt mixture normal temperature, form the bituminous concrete aspect through rolling.
Embodiment 2
A kind of asphalt cold recycling agent comprises treating compound and siccative:
The component percentage composition of described treating compound is:
Rubber oil 15% 120# solvent oil 40%
0# diesel oil 10% synthetic rubber SBS 20%
C9 petroleum resin 15%
The component percentage composition of described siccative is:
Ethyl acetate 60% amine hydroxybenzene 40%
Utilize the application of asphalt cold recycling agent in the cold recycled asphalt concrete, the steps include: the aged asphalt compound (RAP) after the milling at normal temperatures and pressures in treating compound: the ratio treating compound mix of aged asphalt=1: 1.5, described aged asphalt compound is become infiltrate material, stack and store after 10 days, described siccative and described treating compound are pressed 1: 5 described infiltration material of proportioning normal temperature and pressure mix, obtain cold recycled asphalt mixture; The content of wherein said aged asphalt accounts for 3% of described aged asphalt compound.
Described aged asphalt compound size range≤16mm after the milling of the present invention;
Described aged asphalt obtains according to the test of JTG E20-2011 T0722 " highway engineering pitch and Asphalt Mixture Experiment rules " asphalt extraction test method.
With the pave middle upper layer of bituminous concrete pavement of common road of described cold recycled asphalt mixture normal temperature, form the bituminous concrete aspect through rolling.
Embodiment 3
A kind of asphalt cold recycling agent comprises treating compound and siccative:
The component percentage composition of described treating compound is:
Treating compound:
Rubber oil 40% 120# solvent oil 20%
0# diesel oil 5% synthetic rubber SBS 30%
C9 petroleum resin 5%
Siccative:
Ethyl acetate 70% amine hydroxybenzene 30%
Utilize the application of asphalt cold recycling agent in the cold recycled asphalt concrete, the steps include: the aged asphalt compound (RAP) after the milling at normal temperatures and pressures in treating compound: the ratio treating compound mix of aged asphalt=1.5: 1, described aged asphalt compound is become infiltrate material, stack and store after 6 days, described siccative and described treating compound are pressed 1: 5 described infiltration material of proportioning normal temperature and pressure mix, obtain cold recycled asphalt mixture; The content of wherein said aged asphalt accounts for 6% of described aged asphalt compound.
Described aged asphalt compound size range≤16mm after the milling of the present invention;
Described aged asphalt obtains according to the test of JTG E20-2011 T0722 " highway engineering pitch and Asphalt Mixture Experiment rules " asphalt extraction test method.
Described cold recycled asphalt mixture normal temperature is paved in the middle upper layer of bituminous pavement of bituminous concrete pavement of Class II highway, form the bituminous concrete aspect through rolling.
Table 1 is for by embodiment 1,2,3 described cold asphalt rehabilitation agent prescriptions with utilize this asphalt cold recycling agent to reclaim cold recycled asphalt concrete and it is routed on the road surface structare layer, does the test-results that detects the relevant item that test obtains by " highway engineering pitch and Asphalt Mixture Experiment rules " JTG E20-2011.
Table 1
Synopsis 1 data analysis is learnt: utilize asphalt cold recycling agent of the present invention and the cold recycled asphalt concrete that obtains in the cold recycled asphalt concrete is routed to it in road surface structare layer, its voidage, flow valuve, stability, intensity, wheel tracking test dynamic stability and low-temperature bending test breaking strain value all are higher than motorway and mix the requirement of dense-graded asphalt concrete compound road surface pavement structural sheet with heat after testing, have wide application value.
Claims (4)
1. an asphalt cold recycling agent comprises treating compound and siccative, it is characterized in that: described treating compound is by rubber oil, 120
#Solvent oil, 0
#Diesel oil, synthetic rubber SBS, C9 petroleum resin consist of, and the percentage composition of each material is the mass percent that accounts for whole material total amounts by it, wherein:
Rubber oil 10%～40% 120
#Solvent oil 20%～40%
0
#Diesel oil 5～20% synthetic rubber SBS 10%～30%
C9 petroleum resin 5%～25%
Described siccative is made of ethyl acetate, amine hydroxybenzene, and by ethyl acetate: amine hydroxybenzene is 30:70～70:30 preparation, and wherein: the percentage composition of each material is the mass percent that accounts for whole material total amounts by it;
To add again described siccative behind the aged asphalt compound of described treating compound mix after the milling at normal temperatures and pressures.
2. asphalt cold recycling agent as claimed in claim 1 is characterized in that: the add-on of described siccative adds in described siccative and 1: 4～1: 5 ratio of described treating compound.
3. adopt claim 1 or 2 application of described asphalt cold recycling agent in the cold recycled asphalt concrete, it is characterized in that: in treating compound: the ratio of the aged asphalt in the aged asphalt compound=1.5: 1～1: 1.5 infiltrates mix to be become and infiltrates material, stack and store after 6～10 days, with being mixed to join in the described infiltration material under the described siccative normal temperature and pressure, namely get the cold recycled asphalt concrete;
The content of the aged asphalt in the described aged asphalt compound accounts for 3%～6% of described aged asphalt compound.
4. asphalt cold recycling agent as claimed in claim 3 and the application in the cold recycled asphalt concrete thereof is characterized in that: the aged asphalt compound size range≤16mm after the described milling.
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| CN2012104449881A CN102924936A (en) | 2012-11-09 | 2012-11-09 | Bituminous cold reclaiming agent and application of bituminous cold reclaiming agent in cold reclaiming of bituminous concrete |
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Cited By (8)
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| CN103254652A (en) * | 2013-05-13 | 2013-08-21 | 同济大学 | Method for carrying out cold-recycling on waste asphalt mixture by taking aromatic oil as recycling agent |
| CN103436038A (en) * | 2013-07-16 | 2013-12-11 | 交通运输部公路科学研究所 | Waste and old road asphalt regenerating agent and preparation method thereof |
| CN103450692A (en) * | 2013-09-06 | 2013-12-18 | 武汉市市政建设集团有限公司 | Regenerated semi-flexible pavement material and preparation method thereof |
| CN103804936A (en) * | 2014-02-20 | 2014-05-21 | 重庆交通大学 | Waste SBS asphalt regenerant and preparation method thereof |
| CN109267452A (en) * | 2018-09-17 | 2019-01-25 | 湖南鑫长胜材料科技有限公司 | Mixture and its preparation method and application based on road surface reclaimed materials cold renewal |
| CN109704648A (en) * | 2019-01-19 | 2019-05-03 | 江苏盛达飞建筑材料有限公司 | A kind of Recycled Asphalt Pavement and preparation method thereof |
| CN112280323A (en) * | 2020-11-03 | 2021-01-29 | 哈工(辽宁)交通科技有限公司 | Preparation method of asphalt regenerant with large-proportion RAP mixing amount |
| CN115504727A (en) * | 2022-09-30 | 2022-12-23 | 广州市市政工程维修处有限公司 | In-situ cold recycled asphalt mixture and preparation method and application thereof |
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| CN103254652A (en) * | 2013-05-13 | 2013-08-21 | 同济大学 | Method for carrying out cold-recycling on waste asphalt mixture by taking aromatic oil as recycling agent |
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| CN103450692A (en) * | 2013-09-06 | 2013-12-18 | 武汉市市政建设集团有限公司 | Regenerated semi-flexible pavement material and preparation method thereof |
| CN103450692B (en) * | 2013-09-06 | 2016-04-27 | 武汉市市政建设集团有限公司 | A kind of regeneration half-flexible pavement material and preparation method thereof |
| CN103804936A (en) * | 2014-02-20 | 2014-05-21 | 重庆交通大学 | Waste SBS asphalt regenerant and preparation method thereof |
| CN109267452A (en) * | 2018-09-17 | 2019-01-25 | 湖南鑫长胜材料科技有限公司 | Mixture and its preparation method and application based on road surface reclaimed materials cold renewal |
| CN109704648A (en) * | 2019-01-19 | 2019-05-03 | 江苏盛达飞建筑材料有限公司 | A kind of Recycled Asphalt Pavement and preparation method thereof |
| CN109704648B (en) * | 2019-01-19 | 2021-06-08 | 江苏盛达飞建筑材料有限公司 | Recycled asphalt concrete and preparation method thereof |
| CN112280323A (en) * | 2020-11-03 | 2021-01-29 | 哈工(辽宁)交通科技有限公司 | Preparation method of asphalt regenerant with large-proportion RAP mixing amount |
| CN115504727A (en) * | 2022-09-30 | 2022-12-23 | 广州市市政工程维修处有限公司 | In-situ cold recycled asphalt mixture and preparation method and application thereof |
| CN115504727B (en) * | 2022-09-30 | 2023-09-05 | 广州市市政工程维修处有限公司 | In-situ cold regenerated asphalt mixture and preparation method and application thereof |
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Inventor after: Xu Guanghong Inventor after: Chen Lidong Inventor after: Huang Lei Inventor after: Zhang Hua Inventor after: Wu Xueliu Inventor after: Hao Zengheng Inventor after: Sheng Xingyue Inventor before: Xu Guanghong Inventor before: Huang Lei Inventor before: Zhang Hua Inventor before: Wu Xueliu Inventor before: Hao Zengheng Inventor before: Sheng Xingyue |
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Free format text: CORRECT: INVENTOR; FROM: XU GUANGHONG HUANG LEI ZHANG HUA WU XUELIU HAO ZENGHENG SHENG XINGYUE TO: XU GUANGHONG CHEN LIDONG HUANG LEI ZHANG HUA WU XUELIU HAO ZENGHENG SHENG XINGYUE |
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Application publication date: 20130213 |