Preparation method of emulsified asphalt cold recycling asphalt mixture

A technology of cold recycled mixture and emulsified asphalt, which is applied in the direction of sustainable waste treatment, solid waste management, and climate sustainability. The phenomenon of material fragmentation, meeting the performance requirements, and the effect of reasonable methods

Inactive Publication Date: 2014-01-29
JIANGSU TRANSPORTATION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 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

[0039] The preparation method of emulsion asphalt cold recycled mixture, including the following steps:

[0040] (1) Get the old asphalt pavement milling sample and determine its level

[0041] Broken old asphalt pavement (the old asphalt pavement is the maximum particle size of the collected material in the traditional asphalt mixture is 31.5mm and below the size of aslerate).S screening, separate the broken old asphalt pavement, the particle size is 9.5 ~ 31.5mm coarse milling material and the fine milling material with a particle size of less than 9.5mm;, The interior standard screens are obtained by the grade of thick and fine milling; the sampling amount in the fine milling planing material is 10 to 50kg, which is 30-70kg in the crude milling material.The sampling part of the milling material includes the top, middle and bottom of the milling pile.The indoor standard sieve holes are square (square holes sieve), and the pores are 31.5㎜, 26.5㎜, 19㎜, 16㎜, 13.2㎜, 9.5㎜, 4.75㎜, 2.3...

Embodiment 2

[0081] The preparation method of emulsion asphalt cold recycled mixture, including the following steps:

[0082] (1) Get the old asphalt pavement milling sample and determine its level

[0083] Broken old asphalt pavement (the old asphalt pavement is the maximum particle size of the collected material in the traditional asphalt mixture is 26.5mm and below the size of aslerate).S screening, divide the broken old asphalt pavement, the particle size is 9.5 to 26.5mm coarse milling material and the fine milling material with a particle size of less than 9.5mm;, The interior standard screens are obtained by the grade of thick and fine milling; the sampling amount in the fine milling planing material is 10 to 50kg, which is 30-70kg in the crude milling material.The sampling part of the milling material includes the top, middle and bottom of the milling pile.The indoor standard sieve holes are square (square holes sieve), and the pores are 31.5㎜, 26.5㎜, 19㎜, 16㎜, 13.2㎜, 9.5㎜, 4.75㎜, 2.36...

Embodiment 3

[0116] The preparation method of emulsion asphalt cold recycled mixture, including the following steps:

[0117] (1) Get the old asphalt pavement milling sample and determine its level

[0118] Broken old asphalt pavement (the old asphalt pavement is the maximum particle size of the collected material in the traditional asphalt mixture is 26.5mm and below the size of aslerate).S screening, divide the broken old asphalt pavement, the particle size is 9.5 to 26.5mm coarse milling material and the fine milling material with a particle size of less than 9.5mm;, The interior standard screens are obtained by the grade of thick and fine milling; the sampling amount in the fine milling planing material is 10 to 50kg, which is 30-70kg in the crude milling material.The sampling part of the milling material includes the top, middle and bottom of the milling pile.The indoor standard sieve holes are square (square holes sieve), and the pores are 31.5㎜, 26.5㎜, 19㎜, 16㎜, 13.2㎜, 9.5㎜, 4.75㎜, 2.36...

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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

Technical field [0001] The invention involves road projects, especially the preparation method of emulsion asphalt mixture. Background technique [0002] There are many types of asphalt pavement regeneration technology. Generally, the regeneration methods are divided into factory heat regeneration, factory cold regeneration, local heat regeneration and local cold regeneration.Practical experience has proved that the factory mixing regeneration technology is more reliable and stable. Factory mixing and regeneration generally use emulsifier asphalt, foam asphalt, etc. as a regenerative agent.Subsequent paving and crushing processes. [0003] At present, the preparation methods of emulsion asphalt cold recycled asphalt mixture commonly used in the engineering industry are mainly the following steps: [0004] 1. First determine the mineral level according to the scope of the level, and then determine the optimal moisture content through the actual test (the amount of emulsion asphalt...

Claims

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Application Information

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Patent Type & Authority Patents(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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