热再生沥青混合料路用性能评价

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关键词：路面工程；厂拌热再生；灰靶决策模型；RAP掺量；再生剂；路用性能中图分类号：U416.2 文献标志码：A 文章编号：1005-8249（2025）02-0131-08DOI：10.19860/j.cnki.issn1005-8249.2025.02.022

Abstract：Tofullyutilizerecycledasphalt pavement materials，theinfluenceofRAPcontentontheroad performanceof factory mixed hotrecycledasphalt mixture wasanalyzed throughhigh-temperatureruting，smallbeambending，immersion Marshal test，andfreze-thaw spliting testmethods；DeterminetheoptimalratioschemeforRAPdosagethrough thegreytarget decisionmodel.Theresultsshowedthatas theRAPcontentincreased，thehigh-temperature stabilityof thefactory mixed hot recycledasphaltmixturegraduallyimproved，whilethewaterstabilityandlow-temperaturecrackresistancegradualy decreased；Andtheevaluation indicators for high temperature stability，low temperaturecrackresistance，andwaterstability change faster within the RAP content range of 30 % to 40 % ；The rejuvenator improves the low - temperature crack resistance and waterstabilityofthefactorymixedhotrecycledasphaltmixture；Basedonthegreytarget decisionmodel，theasphaltmixture with 40 % RAP content and the addition of rejuvenator was ultimately determined as the optimal solution.

Key words：road surface enginering；hot mix regeneration；grey target decision model；RAPcontent；regenerant；road performance

0 引言

随着已运营公路进人大修周期，产生大量的沥青路面回收料，其再生利用尤为重要。（剩余6921字）