Method for evaluating bonding performance of pavement heating type sealant based on dissipated energy

Abstract

The invention discloses a method for evaluating the bonding performance of a pavement heating type sealant based on dissipated energy. A pavement heating type sealant combined test piece is prepared, a hot-pressing cold-drawing circulation simulation test is carried out, and pavement heating type sealant bonding performance evaluation based on energy dissipation is carried out. According to the invention, through hot-pressing and cold-drawing circulation in a test room, the dual effects of temperature and force applied to the pavement crack repairing structure at the circulation temperature are simulated, and through three times of hot-pressing and cold-drawing circulation, the influence of the circulation temperature effect on the adhesive property of the sealant within three years at the initial stage of use is simulated. According to the evaluation index of the adhesive property of the sealant provided based on the dissipated energy, the influence of multiple circulating temperature effects on the adhesive property of the sealant is comprehensively considered, the adhesive property of the pavement heating type sealant can be reasonably and quantitatively judged, and the defects of an existing standard evaluation method are overcome; the method solves the problem of poor correlation between the adhesive property evaluation method and the on-site adhesive property in the current pavement heating type sealant test specification, and has a good market application prospect.

Description

technical field [0001] The invention belongs to the technical field of highway pavement maintenance, and in particular relates to a method for evaluating the bonding performance of a road heating type sealant based on dissipated energy. Background technique [0002] With the continuous improvement of my country's transportation infrastructure, the national high-grade highway network has taken shape. The focus of highway development has gradually shifted from the construction stage to the maintenance stage. Since pavement cracking is one of the main diseases of asphalt pavement structure, pavement crack repair is an important part of highway pavement maintenance. Grooving repair of asphalt pavement cracks is one of the most commonly used and important road pavement maintenance techniques. In the early stage of the development of pavement cracks, using suitable crack repair materials to repair pavement cracks can effectively prevent water and debris from entering the pavemen...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems encountered by pavement heating sealant in repairing pavement cracks and the deficiency of the bonding performance evaluation method in the current specification, the present invention proposes a method for evaluating the bonding performance of pavement heating sealant based on dissipated energy. This method can simulate the influence of cyclic temperature changes on the adhesive performance of sealant, and the evaluation index of sealant adhesive performance based on dissipative energy comprehensively considers the influence of multiple cycle temperature effects on the adhesive performance of sealant, and can quantitatively evaluate the sealant The size of the bonding performance of the glue under the action of high and low temperature cycles solves the problem of poor correlation between the bonding performance evaluation method and the on-site bonding performance in the current pavement heating sealant test specification and the inability to specifically compare the bonding performance of different sealants question

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