Hydrogenated epoxy modified emulsified asphalt and long-term aging asphalt fusion behavior evaluation method

Through an evaluation method for the fusion behavior of hydrogenated epoxy modified emulsified asphalt and long-term aging asphalt, the problem of unclear fusion behavior of hydrogenated epoxy modified emulsified asphalt and RAP in cold regenerated asphalt mixture is solved, and the effect of improving the mechanical properties and road performance of cold regenerated asphalt is achieved.

CN119715343APending Publication Date: 2025-03-28GUIZHOU PROVINCE BIJIE HIGHWAY ADMINISTRATION BUREAU +1
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Patent Information

Application Number
CN202510011402.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-03
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The fusion behavior of hydrogenated epoxy modified emulsified asphalt and long-term aged asphalt on RAP in cold regenerated asphalt mixture is unclear, making it difficult to improve the mechanical properties and road performance of the cold regenerated asphalt mixture.

Method used

A method for fusion behavior evaluation of hydrogenated epoxy modified emulsified asphalt and long-term aging asphalt is proposed. By preparing fusion samples and conducting macroscopic and microscopic tests, the changes in molecular weight distribution, microscopic structure, micromechanical properties, chemical composition and physical phase structure are analyzed, and the fusion behavior of hydrogenated epoxy resin modified emulsified asphalt and long-term aging asphalt is accurately evaluated.

Benefits of technology

Through this method, the fusion behavior of hydrogenated epoxy resin modified emulsified asphalt and long-term aged asphalt can be more accurately evaluated, the permeability of emulsified asphalt, the degree of fusion is improved, the mechanical properties of cold regeneration mixtures can be improved, and the development of cold regeneration technology on asphalt pavement can be promoted.

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Abstract

The invention provides a method for evaluating a fusion behavior of hydrogenated epoxy modified emulsified asphalt and long-term aged asphalt, belongs to the field of asphalt pavement materials, and solves the problem that the fusion behavior of hydrogenated epoxy modified emulsified asphalt and aged asphalt on RAP is difficult to accurately evaluate due to lack of a simple preparation method for a fusion sample of hydrogenated epoxy modified emulsified asphalt and aged asphalt on RAP at present. The method comprises the following steps: preparing long-term aged asphalt, injecting the long-term aged asphalt into the right side of a rectangular groove in a glass plate, injecting hydrogenated epoxy modified emulsified asphalt and hydrochloric acid into the left side of the rectangular groove, and standing at 30 DEG C for 5 hours to prepare a fused sample; dividing a fused asphalt sample into areas with different fusion degrees, respectively sampling from the different areas, characterizing each sample by adopting macroscopic and microscopic tests, and analyzing the change conditions of molecular weight distribution, microstructure, micromechanical properties, chemical components and phase structures in the fusion process of the two samples; therefore, the fusion behavior of the hydrogenated epoxy resin modified emulsified asphalt and the long-term aged asphalt is accurately evaluated, and a foundation is laid for improving the fusion degree of the emulsified asphalt and the aged asphalt on the RAP.
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