塑料科技2024，Vol.52Issue(1)：28-32,5.DOI:10.15925/j.cnki.issn1005-3360.2024.01.006
回收微塑料制备改性沥青混凝土及其性能研究
Study on Preparation and Properties of Modified Asphalt Concrete by Recycling Microplastics
摘要
Abstract
In order to enhance the comprehensive property of asphalt concrete,waste polypropylene(PP)microplastics were utilized to modify the asphalt matrix,resulting in the preparation of AC-13 asphalt concrete.The study focused on the properties of both asphalt and asphalt concrete.The results show that the addition of microplastics improves the deformation resistance and high-temperature stability of the modified asphalt,as well as enhances the mechanical properties,high temperature stability,low temperature stability,and water stability of the asphalt concrete.With a microplastic content of 4%,compared to the matrix asphalt,the modified asphalt exhibits a 20%reduction in penetration at 25℃and a 12℃increase in softening point.At the same microplastic content of 4%,in comparison to the matrix asphalt concrete,the modified asphalt concrete shows an 11.6%increase in immersion Marshall residual(MS0)and a 12.8%increase in freeze-thaw splitting tensile strength ratio(TSR),an 86%improvement in dynamic stability,a 67.0%reduction in rut depth,a 14.6%decrease in volume of air voids(VV),a 21.1%increase in Marshall stability(MS),a 7.8%increase in voids filled with asphalt(VFA),and a 35.6%increase in low-temperature bending failure strain.关键词
聚丙烯微塑料/改性沥青混凝土/力学性能/高温稳定性/低温稳定性Key words
Polypropylene microplastics/Modified asphalt concrete/Mechanical properties/High temperature stability/Low temperature stability分类
通用工业技术引用本文复制引用
张婷婷,茹沛泽..回收微塑料制备改性沥青混凝土及其性能研究[J].塑料科技,2024,52(1):28-32,5.基金项目
信阳农林学院2022年青年教师科研基金"绿色低碳理念下信阳生态文明建设的实然之境与应然之策"(QN2022034) （QN2022034）
