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Preparation method of emulsified asphalt cold recycling asphalt mixture

A technology for cold recycling mixture and emulsified asphalt, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of no inspection method, simple and imperfect experiments, aggregate crushing, etc., to meet the performance requirements requirements, reducing aggregate fragmentation, and the effect of reasonable methods

Inactive Publication Date: 2012-11-07
JIANGSU TRANSPORTATION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It can be seen that there are deficiencies in the commonly used design methods at present: when studying the optimum moisture content and the optimum amount of emulsified asphalt, the experiments are simple and imperfect, and there is no certain test method to judge whether the optimum moisture content and the optimum emulsified asphalt dosage are reasonable
At the same time, due to the Marshall compaction method used in the process of determining the optimum amount of emulsified asphalt, it is easy to cause some aggregates to be broken, and the secondary molding process is used, both of which will reduce the water-immersion splitting strength test results of the specimens, which do not meet the Actual production

Method used

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  • Preparation method of emulsified asphalt cold recycling asphalt mixture
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  • Preparation method of emulsified asphalt cold recycling asphalt mixture

Examples

Experimental program
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Effect test

Embodiment 1

[0041] The preparation method of emulsified asphalt cold recycled mixture comprises the following steps:

[0042] (1) Obtain samples of old asphalt pavement milling materials and determine their gradation

[0043] Broken old asphalt pavement (the old asphalt pavement is the asphalt pavement with the maximum particle size of the aggregate in the traditional asphalt mixture is 31.5mm and below) milling material, composed of a sieve with a diameter of 31.5mm and a sieve with a diameter of 9.5mm Set of sieves, separate the crushed old asphalt pavement milling material into coarse milling material with a particle size of 9.5-31.5 mm and fine milling material with a particle size of less than 9.5 mm; take samples from the coarse and fine milling material respectively The gradation of coarse and fine milling materials is obtained respectively through indoor standard sieves; the sampling amount in the fine milling materials is 10-50 kg, and the sampling amount in the rough milling mat...

Embodiment 2

[0085] The preparation method of emulsified asphalt cold recycled mixture comprises the following steps:

[0086] (1) Obtain samples of old asphalt pavement milling materials and determine their gradation

[0087] Broken old asphalt pavement (the old asphalt pavement is the asphalt pavement with the maximum particle size of the aggregate in the traditional asphalt mixture is 26.5mm and below) milling material; it is composed of a sieve with a diameter of 26.5mm and a sieve with a diameter of 9.5mm Set of sieves, separate the crushed old asphalt pavement milling material into coarse milling material with a particle size of 9.5-26.5mm and fine milling material with a particle size of less than 9.5mm; take samples from the coarse and fine milling material respectively The gradation of coarse and fine milling materials is obtained respectively through indoor standard sieves; the sampling amount in the fine milling materials is 10-50 kg, and the sampling amount in the rough milling...

Embodiment 3

[0122] The preparation method of emulsified asphalt cold recycled mixture comprises the following steps:

[0123] (1) Obtain samples of old asphalt pavement milling materials and determine their gradation

[0124] Broken old asphalt pavement (the old asphalt pavement is the asphalt pavement with the maximum particle size of the aggregate in the traditional asphalt mixture is 26.5mm and below) milling material; it is composed of a sieve with a diameter of 26.5mm and a sieve with a diameter of 9.5mm Set of sieves, separate the crushed old asphalt pavement milling material into coarse milling material with a particle size of 9.5-26.5mm and fine milling material with a particle size of less than 9.5mm; take samples from the coarse and fine milling material respectively The gradation of coarse and fine milling materials is obtained respectively through indoor standard sieves; the sampling amount in the fine milling materials is 10-50 kg, and the sampling amount in the rough milling...

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Abstract

The invention provides a preparation method of an emulsified asphalt cold recycling asphalt mixture. The preparation method relates to the field of road engineering and includes the following steps: obtaining milling samples of old asphalt pavement, determining grading of filler, determining weight percentage of rough milling materials, fine milling materials, cement and mineral powder in raw materials, determining optimum moisture content a, determining optimum dosage of emulsified asphalt, determining optimum moisture content b, conducting checking and stirring the emulsified asphalt cold recycling asphalt mixture. The preparation method is rigor. Determination of optimum usage and optimum moisture content of emulsified asphalt gives consideration to the lubrication effect of water and asphalt in the molding process. The optimum moisture content and the optimum dosage of the emulsified asphalt are determined through checking. The preparation method adopts the processes of rotating, compacting, once molding and nourishment, accords with reality, and is reasonable and capable of meeting requirements for actual engineering.

Description

[0001] technical field [0002] The invention relates to road engineering, in particular to a preparation method of emulsified asphalt cold recycled asphalt mixture. Background technique [0003] There are many types of asphalt pavement recycling technologies, and the regeneration methods are generally divided into plant-mixed hot regeneration, plant-mixed cold regeneration, hot-in-place regeneration and cold-in-place regeneration. Practical experience has proved that the plant-mixed regeneration technology is relatively reliable and stable. Generally, emulsified asphalt, foamed asphalt, etc. are used as regeneration agents for plant-mixed cold regeneration. Milling materials and recycled binders are mixed evenly in the mixing building, and then transported to the construction site for Subsequent paving and rolling processes. [0004] At present, the preparation method of emulsified asphalt cold recycled asphalt mixture commonly used in the engineering field mainly has the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B18/16
CPCY02W30/91
Inventor 叶勤丁武洋韦武举乐海淳胡兴国袁勇
Owner JIANGSU TRANSPORTATION RES INST CO LTD
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