天津建设科技2024，Vol.34Issue(6)：26-29,4.DOI:10.3969/j.issn.1008-3197.2024.06.007
RAP精分细粉料Sup-25沥青混合料配合比设计及验证
Design and Verification of the Mix Proportion of RAP Fine Powder Sup-25 Asphalt Mixture
摘要
Abstract
In order to verify the application effect of RAP fine powder in plant mixed hot recycling,relying on fine sepa-ration equipment and using physical collision method,the RAP fine aggregate that meets the engineering needs was replaced with a part of the fine aggregate and filler,which accounts for the largest proportion and has the highest asphalt content.The mix proportion of Sup-25 asphalt mixture was tested,and its high-tem-perature stability and water stability were tested through rutting test,freeze-thaw splitting test,and immer-sion Marshall test.By comparing and analyzing the impact of finely divided materials on the road performance of Sup-25,it was found that adding 0～3 mm fine powder can reduce the new oilstone ratio by approximately 1%,the high temperature stability and water stability meet the specification requirements,and adding 0～3 mm fine powder can increase the high temperature stability of the asphalt mixture by approximately 18.5%.关键词
道路工程/沥青混合料回收料/精分细粉料/沥青混合料Key words
road engineering/reclaimed asphalt pavement/fine powder separation/asphalt mixture分类
交通工程引用本文复制引用
董自明,侍坛涛,吕秀浩,张世亮,高飞,李硕,封志虎,章朔,李家伟..RAP精分细粉料Sup-25沥青混合料配合比设计及验证[J].天津建设科技,2024,34(6):26-29,4.基金项目
连云港市重点研发计划(SF2239) （SF2239）
江苏海洋大学研究生科研与实践创新计划项目(KYCX2022-76) （KYCX2022-76）
