摘要
Abstract
Polyurethane(PU)modified asphalt is a novel road maintenance material.By introducing PU components,it significantly enhances the high-temperature stability,low-temperature crack resistance,water resistance,and durability of traditional asphalt.To better promote the application of PU modified asphalt in road maintenance,the research progress of PU modified asphalt materials in road crack repair,thin-layer paving,and fatigue-resistant pavements is summarized and analyzed,mainly including optimizing preparation processes,enhancing material performance,and reducing costs.At the same time,the development of more durable,sustainable,and environmentally friendly PU modified asphalt has become a key focus for future research.This material is expected to gain wider application in future road maintenance.关键词
道路养护/聚氨酯/改性沥青/研究进展Key words
road maintenance/polyurethane/modified asphalt/research progress分类
通用工业技术
