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Operation method for confirming cold regeneration mix mixing proportion of emulsified asphalt

A technology for cold recycled mixture and asphalt mixture, which is applied in the mix ratio design of emulsified asphalt cold recycled mixture, determines the mix ratio of emulsified asphalt cold recycled mixture, can solve problems such as non-conformance, reduce waste and save construction and conservation funds, the effect of reducing environmental damage

Inactive Publication Date: 2008-08-20
TIANJIN GUOSHENG CONSTR COST CONSULTATIVE
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0002] At present, flexible pavements are usually built. Generally, the thickness of the asphalt layer is 400-500mm. However, considering the current engineering quality, construction level, management level, and economic conditions of our country, starting from my country is a country that lacks asphalt resources. It is necessary to properly thicken the asphalt layer on some roads, but the construction of the same flexible structure as abroad is not in line with my country's current national conditions

Method used

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Embodiment

[0022] Embodiment: a kind of working method of determining the mixing ratio of emulsified asphalt cold recycled mixture is characterized in that it comprises the following steps:

[0023] (1) Evaluate the performance of asphalt mixture, including:

[0024] ① On-site sampling, take 5-6 core samples per kilometer to obtain representative samples;

[0025] ② Extract asphalt from waste asphalt mixture, and analyze aggregate gradation composition, physical and mechanical indicators and aged asphalt content;

[0026] ③Performance analysis of aged asphalt;

[0027] ④ According to the aging degree of waste asphalt, choose asphalt with different penetration grades as the emulsified asphalt formula, and use cationic or anionic emulsified asphalt according to the properties of different stone materials. At the same time, slow cracking should be used for aggregates with dense gradation or high fine material content. Emulsified asphalt, for aggregates with open gradation or coarse gradat...

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Abstract

The invention relates to a working method for determining the combining ratios of cold recycled mixtures of emulsified asphalts and comprises the following aspects: (1) the performance evaluation of old asphalt mixtures; (2) the design of the combining ratio of cold recycled mixtures of the emulsified asphalts; (3) the performance tests of the performance of the cold recycled mixtures of the emulsified asphalts. The working method has the advantages of releasing the unavoidable reflective cracking problem of a semi-rigid base, improving the water temperature environment, reducing the tensile stress at the bottom of the semi-rigid base and prolonging the service life of the semi-rigid base asphalt pavement, thus providing effective measure of settlement for newly built pavements, more particularly for the maintenance and transformation of old roads; the working method can save a plurality of construction and maintenance funds as well as reducing the resource waste and environmental destruction.

Description

(1) Technical field: [0001] The invention relates to a working method for determining a road surface mixture, in particular to a method for designing a mixing ratio of an emulsified asphalt cold recycled mixture, that is, a working method for determining the mixing ratio of an emulsified asphalt cold recycled mixture. (two) background technology: [0002] At present, flexible pavements are usually built. Generally, the thickness of the asphalt layer is 400-500mm. However, considering the current engineering quality, construction level, management level, and economic conditions of our country, starting from my country is a country that lacks asphalt resources. It is necessary to properly thicken the asphalt layer on some roads, but the construction of the same flexible structure as abroad is not in line with my country's current national conditions. For this reason, attention should be paid to asphalt pavement regeneration technology, and the emulsified asphalt cold recycled m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
Inventor 孙学敏姜祎李利
Owner TIANJIN GUOSHENG CONSTR COST CONSULTATIVE
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