Method for improving shape memory property of asphalt based on eucommia ulmoide gum

Abstract

The invention discloses a method for improving the shape memory property of asphalt based on eucommia ulmoide gum, and belongs to the technical field of asphalt modification. The problems that currently, after asphalt is modified, the shape memory property is not obvious, or the shape memory effect is poor, the fixed rate and the recovery rate are low, self-healing of asphalt pavement cracks is difficult to achieve, and road durability is affected are solved. According to the method, firstly, 70# road petroleum asphalt and the prepared shape memory eucommia ulmoide gum are heated and stirred in a high-speed shearing emulsifying machine, eucommia ulmoide gum modified asphalt with the shape memory property is prepared, then relevant instruments are utilized to test chemical compositions andmicrostructure forms of the eucommia ulmoide gum modified asphalt, finally the shape memory property and the shape memory mechanism of the eucommia ulmoide gum modified asphalt are researched, the preparation technology is further optimized, and the shape memory property of the asphalt is improved. According to the prepared shape memory eucommia ulmoide gum modified asphalt, self-healing of the asphalt pavement cracks can be achieved, a large quantity of maintenance costs and resource consumption are reduced, and the transportation comprehensive benefits are increased.

Description

technical field [0001] The invention relates to a method for improving the shape memory performance of asphalt based on eucommia gum, and belongs to the technical field of asphalt modification. Background technique [0002] Due to the good driving comfort and excellent road performance of asphalt pavement, most of the high-grade roads built in my country use asphalt pavement. However, during the use of asphalt pavement, various cracks will occur under the joint action of environment, load and other factors, resulting in the decline of the service level of asphalt pavement within the service life. And with the rapid development of our society and the needs of economic construction, the amount of national travel increases, and the demand for road use increases sharply. Increasing traffic volume and heavy vehicles lead to crack damage on the road surface. Cracks in the asphalt pavement need to be repaired, which requires a lot of manpower, financial and material resources, an...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for improving the shape memory performance of asphalt based on eucommia glue, to solve the problem that after modification of asphalt, there is little shape memory performance, or the shape memory effect is poor, the fixation rate and recovery rate are low, and it is difficult to realize the self-sustainability of asphalt pavement cracks. Healing, a problem that seriously affects the durability and quality of service of asphalt pavements