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Environment-friendly cold-mixed recycled asphalt mixture and preparation method and application thereof

A technology of recycled asphalt and mixture, which is applied in the field of environmentally friendly cold-mix recycled asphalt mixture, which can solve the problems of low proportion, rutting, overpacking, reduction of mixture strength and Marshall stability, etc.

Inactive Publication Date: 2021-07-30
上海繁荣道路建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The environmentally friendly asphalt mixture in the above-mentioned technologies mainly has the following disadvantages. The ratio of waste and old asphalt reclaimed materials to construction waste in the current technical specifications is relatively low, only 15-30%. When it is used, it will affect the asphalt ratio of the mixture, and then reduce the strength and Marshall stability of the mixture. After it is applied to road paving, it is prone to rutting, wrapping, etc., which seriously affects the comfort of the vehicle and the safety of the road surface. Sex and service life

Method used

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  • Environment-friendly cold-mixed recycled asphalt mixture and preparation method and application thereof
  • Environment-friendly cold-mixed recycled asphalt mixture and preparation method and application thereof
  • Environment-friendly cold-mixed recycled asphalt mixture and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0071] A kind of modified emulsified asphalt, its preparation steps are as follows:

[0072] a. Put 10kg of waste construction pipes into a ball mill, grind and crush them, pass through a 100-mesh sieve, then add them to 50kg of asphalt, heat to a molten state at 230°C, and prepare a molten asphalt mixture, keep it warm for later use;

[0073] b. Stir and mix 3kg of SBS modifier, 1kg of emulsifier and 0.5kg of stabilizer according to the corresponding ratio at 800r / min for 10min, then heat to 60°C to prepare the modified solution for later use;

[0074] c. Add the modified liquid into the molten asphalt mixture according to the ratio, and stir at 2000r / min for 30 minutes to prepare the modified emulsified asphalt;

[0075] Construction waste pipes are composed of pipes made of PET, PVC, and PE in a weight ratio of 1:0.5:0.5;

[0076] The emulsifier is OS MS-1 emulsifier, purchased from Haian Petrochemical Plant in Jiangsu Province;

[0077] The stabilizer is SBS stabilizer, ...

preparation example 2

[0079] A kind of modified emulsified asphalt, its preparation steps are as follows:

[0080] a. Put 12.5kg of discarded construction pipes into a ball mill, grind and crush them, pass through a 100-mesh sieve, then add them to 65kg of asphalt, heat to a molten state at 250°C, and prepare a molten asphalt mixture, keep it warm for later use;

[0081] b. Stir and mix 4kg of SBS modifier, 3kg of emulsifier and 1kg of stabilizer according to the corresponding ratio at 800r / min for 10min, then heat to 70°C to prepare the modified solution for later use;

[0082] c. Add the modified liquid into the molten asphalt mixture according to the ratio, and stir at 2000r / min for 30 minutes to prepare the modified emulsified asphalt;

[0083] Construction waste pipes are composed of pipes made of PET, PVC, and PE in a weight ratio of 1:0.5:0.5;

[0084] The emulsifier is OS MS-1 emulsifier, purchased from Haian Petrochemical Plant in Jiangsu Province;

[0085] The stabilizer is SBS stabiliz...

preparation example 3

[0087] A kind of modified emulsified asphalt, its preparation steps are as follows:

[0088] a. First, put 15kg of waste construction pipes into a ball mill, grind and crush them, pass through a 100-mesh sieve, then add them to 80kg of asphalt, heat to a molten state at 270°C, and prepare a molten asphalt mixture, keep it warm for later use;

[0089] b. Stir and mix 5kg of SBS modifier, 5kg of emulsifier and 1.5kg of stabilizer according to the corresponding ratio at 800r / min for 10min, then heat to 80°C to prepare the modified solution for later use;

[0090] c. Add the modified liquid into the molten asphalt mixture according to the ratio, and stir at 2000r / min for 30 minutes to prepare the modified emulsified asphalt;

[0091] Construction waste pipes are composed of pipes made of PET, PVC, and PE in a weight ratio of 1:0.5:0.5;

[0092] The emulsifier is OS MS-1 emulsifier, purchased from Haian Petrochemical Plant in Jiangsu Province;

[0093] The stabilizer is SBS stabi...

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Abstract

The invention relates to the technical field of asphalt mixture preparation, in particular to an environment-friendly cold-mixed recycled asphalt mixture and a preparation method and application thereof. The environment-friendly cold-mixed recycled asphalt mixture consists of the following components in parts by weight: 3.0-4.5 parts of modified emulsified asphalt; 1.0-2.0 parts of cement; 2.0-3.0 parts of water; 3-8 parts of a new aggregate; 80-100 parts of a waste asphalt reclaimed material; and 2-5 parts of mineral powder, wherein the modified recycled asphalt is prepared from the following components in parts by weight: 50-80 parts of asphalt, 10-15 parts of waste building pipes, 3-5 parts of an SBS modifier, 1-5 parts of an emulsifier and 0.5-1.5 parts of a stabilizer. The environment-friendly cold-mixed recycled asphalt mixture disclosed by the invention is high in waste utilization rate, reduces the production cost, has good Marshall stability and strength, and is high in safety and is not easy to cause the phenomena of ruts, upheaval and the like when being applied to road maintenance and road construction.

Description

technical field [0001] The application relates to the technical field of asphalt mixture preparation, more specifically, it relates to an environment-friendly cold-mix recycled asphalt mixture, its preparation method and application. Background technique [0002] Environmentally friendly asphalt mixture refers to the mixture that meets the road performance requirements by adding construction solid waste or old materials to the asphalt mixture in a certain proportion after reprocessing. Through the use of construction waste, the development of the construction industry and building materials industry is organically combined with the protection of the ecological environment and the control of environmental pollution. While obtaining economic benefits, it also consumes a large amount of garbage, reducing pollution and land occupation. [0003] The environment-friendly asphalt mixture in the related technology includes asphalt, construction waste, coarse aggregate, fine aggregat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/00C04B2201/50C04B2111/0075
Inventor 张利娅蔡红梅陈燕王本财
Owner 上海繁荣道路建设工程有限公司
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