A kind of recycled asphalt concrete and its preparation method

A technology for recycling asphalt and concrete, which is applied in the direction of sustainable waste treatment, solid waste management, and climate sustainability. It can solve the problems of affecting the service life of asphalt pavement, poor temperature stability of asphalt pavement, and easy heat absorption and melting of asphalt pavement. Achieve the effects of increasing anti-rutting deformation and cracking resistance, improving aging resistance and weather resistance, and preventing rutting deformation and cracking

Active Publication Date: 2021-06-08
江苏盛达飞建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing fiber composite recycled asphalt concrete adopts coarse-grained asphalt concrete, increases the particle size of the aggregate, and adds glass fiber to increase the tensile and crack resistance of the mixture. However, due to the poor temperature stability of the asphalt pavement, the The weather is high and sunny, and the asphalt pavement is easy to absorb heat and melt, resulting in a decrease in strength. After the vehicle is run over, the asphalt pavement will be uneven and affect the service life of the asphalt pavement

Method used

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  • A kind of recycled asphalt concrete and its preparation method
  • A kind of recycled asphalt concrete and its preparation method
  • A kind of recycled asphalt concrete and its preparation method

Examples

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preparation example 1-3

[0039] In the preparation example 1-3, the polyester fiber is selected from the polyester fiber whose article number is 1899 sold by Guangzhou Zhongcheng New Material Technology Co., Ltd., and the ultraviolet absorber is selected from the UV-P type ultraviolet absorber sold by Dongguan Kangjin New Material Technology Co., Ltd. The agent and stabilizer are selected from the XY-620 type stabilizer sold by Weihui Xuyi Plastic Auxiliary Co., Ltd., the tung oil is selected from the lc-0001 type tung oil sold by Shandong Green City Chemical Co., Ltd., and the polybenzimidazole is selected from Suzhou Pinyu Optoelectronics Co., Ltd. The PY5006T polybenzimidazole sold by Technology Co., Ltd., the polyvinyl chloride is selected from the CPM-31 ​​polyvinyl chloride sold by Dongguan Hanzhi Rubber and Plastic Co., Ltd., and the epoxy resin is selected from the E resin sold by Wuxi Qianguang Chemical Raw Materials Co., Ltd. -44 type epoxy resin.

preparation example 1

[0040] Preparation example 1: according to the proportioning in table 1, 0.1kg ultraviolet absorber, 10kg bentonite, 30kg tung oil, 5kg epoxy resin, 0.5kg polyester fiber and 1kg polybenzimidazole are mixed and stirred, and the stirring speed is 1000r / min, stir for 20min, then add 2kg of dimethyl phthalate, 10kg of tire powder, 0.1kg of stabilizer and 20kg of polyvinyl chloride, stir and mix evenly, the rotation speed is 800r / min, stir for 30min, and put in a double Extrude the granular regenerant in the screw extruder, the regenerant particles have a mesh size of 30 mesh, and the tire powder particles have a mesh size of 80 mesh.

[0041] The raw material ratio of regeneration agent in table 1 preparation example 1-3

[0042]

[0043]

preparation example 2

[0044] Preparation example 2: according to the proportioning in table 1, 0.8kg ultraviolet absorber, 13kg bentonite, 45kg tung oil, 10kg epoxy resin, 0.8kg polyester fiber and 1.3kg polybenzimidazole are mixed and stirred, and the stirring speed is 1300r / min, stir for 25min, then add 4kg dimethyl phthalate, 13kg tire powder, 0.3kg stabilizer and 25kg polyvinyl chloride, stir and mix evenly, the speed is 900r / min, stir for 40min, in the temperature of 150℃ Extrude the granular regenerant in the twin-screw extruder, the regenerant particles have a mesh size of 40 mesh, and the tire powder particles have a mesh size of 100 mesh.

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Abstract

The invention discloses a recycled asphalt concrete and a preparation method thereof. Regenerated asphalt concrete includes the following components by weight: 50-80 parts of new asphalt, 10-20 parts of new aggregate, 3-8 parts of mineral powder, 40-60 parts of RAP material, 1-5 parts of regeneration agent, 3-6 parts Part of thermosetting resin, 1-3 parts of lotus leaf hydrophobic agent, 5-10 parts of polypropylene fiber and 1-5 parts of glass fiber; its preparation method is: S1, prepare the first mixture; S2, prepare the second mixture; S3, prepare The third mixture; S4, finished product preparation. The recycled asphalt concrete of the invention has the advantages of excellent crack resistance, durability, high temperature resistance and rutting resistance; in addition, the preparation method of the invention has the advantage of uniform asphalt distribution.

Description

technical field [0001] The invention relates to the technical field of recycled asphalt concrete, more specifically, it relates to a recycled asphalt concrete and a preparation method thereof. Background technique [0002] With the development of national economy and highway transportation, the proportion of large freight vehicles in transportation vehicles is increasing. The traffic volume is increasing year by year, coupled with the widespread phenomenon of vehicle overloading and overrunning, the pavement structure is under the repeated action of vehicle loads, especially heavy vehicle loads, the mixture will be sheared and damaged at the edge of the wheel, and the asphalt surface will be irresistible. The recovered residual deformation accumulates rapidly, or cracks, and gradually expands, leading to rutting and fatigue in the structural layer, which has a serious impact on the road, resulting in early damage to the road surface, greatly shortening the service life of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B18/16C04B111/34
CPCY02W30/91
Inventor 高宜信
Owner 江苏盛达飞建筑材料有限公司
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