Characterization method for interfacial adhesion of emulsified asphalt cold-recycled mixture

Abstract

The invention relates to a characterization method for interfacial adhesion of an emulsified asphalt cold-recycled mixture, belongs to the technical field of cold recycling, and solves the problems that the interfacial adhesion in the emulsified asphalt cold-recycled mixture is difficult to quantitatively evaluate, the characterization method is inaccurate and the like at present. According to thetechnical scheme, the method comprises the following steps: firstly, fitting a standard curve of a crocus sativus solution by virtue of a spectrophotometer, and respectively soaking a newly-mixed emulsified asphalt mixture, an old asphalt mixture and an emulsified asphalt cold-recycled mixture by virtue of the crocus sativus solution; then, determining absorbance of the crocus sativus solution before and after soaking of the three asphalt mixtures, determining corresponding solution concentrations, and calculating the stripping rates of emulsified asphalt, old asphalt and emulsified asphalt in the three asphalt mixtures on the surfaces of the new aggregate, the old aggregate and the old asphalt mixture respectively; and finally, calculating the peeling rate of the asphalt in the emulsified asphalt cold-recycled mixture on the surface of the aggregate, and characterizing the interface adhesion of the emulsified asphalt cold-recycled mixture. The method has important significance for popularization and application of the cold regeneration technology.

Description

Technical field[0001]The invention is a method for characterizing the interface adhesion of an emulsified asphalt cold recycled mixture, and belongs to the technical field of cold recycling.Background technique[0002]Recycling technology enables the reuse of waste asphalt mixtures, saves a large amount of asphalt and sand and gravel materials, reduces the mining of new materials, and at the same time solves the problems of transportation of old asphalt mixtures and waste dumping. It has significant economic and social , Environmental protection benefits. Compared with hot recycling technology, the characteristics of asphalt pavement cold recycling technology at room temperature have more important significance for environmental protection and resource conservation. Existing studies have shown that the greenhouse gas emissions from road transportation account for about 8% of my country’s total social emissions. Road construction and later maintenance rely on a large amount of stone, a...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for characterization of the interfacial adhesion of emulsified asphalt cold recycled mixture to solve the current lack of asphalt (emulsified asphalt + old asphalt) and aggregate (new aggregate + old aggregate) in emulsified asphalt cold recycled mixture Adhesion test detection method, evaluation index, difficult to accurately quantitatively evaluate the adhesion of asphalt and aggregate in emulsified asphalt cold recycled mixture, etc.

[0009] In order to solve the lack of adhesion test methods and evaluation indicators between asphalt (emulsified asphalt + old asphalt) and aggregate (new aggregate + old aggregate) in emulsified asphalt cold recycled mixture, it is difficult to accurately quantitatively evaluate emulsified asphalt cold recycled mixture The purpose of this invention is to provide a method for characterization of the interfacial adhesion of emulsified asphalt cold recycled mixture.