Bituminous cold reclaiming agent and application of bituminous cold reclaiming agent in cold reclaiming of bituminous concrete

A cold regeneration agent and cold regeneration technology, which is applied in the direction of on-site paved condensate pavement, building components, building insulation materials, etc., can solve the problem of low strength, high porosity of recycled asphalt mixture, and inability to reach the middle surface of asphalt pavement Layer use requirements and other issues, to achieve the effect of energy saving, broad promotion and application value

Inactive Publication Date: 2013-02-13
重庆市智翔铺道技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Asphalt pavement regeneration technology at home and abroad is divided into hot plant-mixed regeneration, hot-in-place regeneration, cold plant-mixed regeneration, and cold-in-place regeneration. The asphalt pavement cold regeneration technology mainly uses modified emulsified asphalt, foamed asphalt, and cement as cementing materials. The material has basically no effect on the asphalt regeneration of the old asphalt mixture. It only uses the aggregate of the asphalt mixture, and the valuable binder (aging asphalt) does not play an important role in the recycled material. This leads to the high porosity and low strength of the recycled asphalt mixture, which cannot meet the use requirements of the middle surface layer on the asphalt pavement

Method used

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  • Bituminous cold reclaiming agent and application of bituminous cold reclaiming agent in cold reclaiming of bituminous concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A cold asphalt reclaimer, including sizing agent and desiccant:

[0024] The component percentage of described wetting agent is:

[0025] Rubber oil 25% 120# solvent oil 30%

[0026] 0# diesel oil 8% synthetic rubber SBS 15%

[0027] C9 petroleum resin 22%

[0028] The composition percentage of described desiccant is:

[0029] Ethyl Acetate 40% Oleamide 60%

[0030] The application of asphalt cold regeneration agent in cold recycled asphalt concrete is as follows: mix the aged asphalt mixture (RAP) after milling at normal temperature and pressure at a ratio of sizing agent: aged asphalt = 1.3:1 Combine the aged asphalt mixture into a sizing material, and after stacking and storing for 8 days, mix the desiccant and the sizing agent in a ratio of 1:4 to the sizing material at normal temperature and pressure until the solvent in the sizing material volatilizes. A cold recycled asphalt mixture is obtained; wherein the content of the aged asphalt accounts for 5% of the ...

Embodiment 2

[0035] A cold asphalt reclaimer, including sizing agent and desiccant:

[0036] The component percentage of described wetting agent is:

[0037] Rubber oil 15% 120# solvent oil 40%

[0038] 0# diesel oil 10% synthetic rubber SBS 20%

[0039] C9 petroleum resin 15%

[0040] The composition percentage of described desiccant is:

[0041] Ethyl Acetate 60% Oleamide 40%

[0042] The application of asphalt cold regeneration agent in cold recycled asphalt concrete is as follows: mix the aged asphalt mixture (RAP) after milling at normal temperature and pressure at a ratio of sizing agent: aged asphalt = 1: 1.5 Combine the aged asphalt mixture to make the soaking material. After stacking and storing for 10 days, mix the desiccant and the soaking agent in a ratio of 1:5 at normal temperature and pressure to obtain the cold recycled asphalt mixture. ; Wherein the content of the aged asphalt accounts for 3% of the aged asphalt mixture.

[0043] The particle size range of the aged a...

Embodiment 3

[0047] A cold asphalt reclaimer, including sizing agent and desiccant:

[0048] The component percentage of described wetting agent is:

[0049] Wetting agent:

[0050] Rubber oil 40% 120# solvent oil 20%

[0051] 0# diesel oil 5% synthetic rubber SBS 30%

[0052] C9 petroleum resin 5%

[0053] Desiccant:

[0054] Ethyl Acetate 70% Oleamide 30%

[0055] The application of asphalt cold regeneration agent in cold recycled asphalt concrete is as follows: mix the aged asphalt mixture (RAP) after milling at normal temperature and pressure according to the ratio of sizing agent: aged asphalt = 1.5:1 Combine the aged asphalt mixture to make the soaking material. After stacking and storing for 6 days, mix the desiccant and the soaking agent according to the ratio of 1:5 at normal temperature and pressure to obtain the cold recycled asphalt mixture. ; Wherein the content of the aged asphalt accounts for 6% of the aged asphalt mixture.

[0056] The particle size range of the aged...

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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 [0001] The invention relates to an asphalt cold regeneration agent and its application in cold recycled asphalt concrete, and belongs to the technical field of cold regeneration of recycled aged asphalt concrete. Background technique [0002] Asphalt pavement regeneration technology at home and abroad is divided into hot plant-mixed regeneration, hot-in-place regeneration, cold plant-mixed regeneration, and cold-in-place regeneration. The asphalt pavement cold regeneration technology mainly uses modified emulsified asphalt, foamed asphalt, and cement as cementing materials. The material has basically no effect on the asphalt regeneration of the old asphalt mixture. It only uses the aggregate of the asphalt mixture, and the valuable binder (aging asphalt) does not play an important role in the recycled material. This leads to the high porosity and low strength of the recycled asphalt mixture, which cannot meet the use requirements of the middle surface course ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/00C08L53/02C08L57/02C08K5/01C08K5/101C08K5/20E01C7/20C04B24/26
Inventor 徐光红黄磊张华吴雪柳郝增恒盛兴跃
Owner 重庆市智翔铺道技术工程有限公司
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