第42卷第2期2023年3月Vol.42No.2Mar.2023JOURNALOFHENANPOLYTECHNICUNIVERSITY(NATURALSCIENCE)河南理工大学学报(自然科学版)水泥稳定碎石细观骨架结构特征研究李智1,刘勇1,刘健2(1.华南理工大学土木与交通学院,广东广州510641;2.弗吉尼亚理工大学土木工程与环境工程系,弗吉尼亚黑堡VA24061)摘要:为了探究不同因素对水泥稳定碎石细观骨架结构的影响,应用CT扫描和数字图像处理技术,从细观角度提出新的水泥稳定碎石骨架结构评价指标,并进行有效性验证,利用该指标对不同成型方式下的混合料骨架结构进行评价。结果表明:该指标评价结果与工程实际和以往研究相符合,旋转压实成型方式在达到一定压实次数后骨架指标趋于稳定,振动成型达到一定的振动时长后获得较好的骨架结构,继续振动反而会导致集料竖向离析。旋转压实能获得较好的横断面骨架指标,振动成型获得的纵断面指标更优。用该指标评价不同成型方式的骨架特征具有一定指导意义。关键词:水泥稳定碎石;数字图像处理;骨架结构;成型方式中图分类号:U416.214文献标志码:AA文章编号:1673-9787(2023)2-175-7Researchoncharacteristicsofmeso-skeletonstructureofcement-stabilizedrockmaterialLIZhi1,LIUYong1,LIUJian2(1.SchoolofCivilEngineeringandTransportation,SouthChinaUniversityofTechnology,Guangzhou510641,Guangdong,China;2.DepartmentofCivilandEnvironmentalEngineering,VirginiaPolytechnicInstituteandStateUniversity,Blacksburg24061,Virginia,USA)Abstract:Inordertoevaluatetheinfluencesofdifferentfactorsonthemeso-skeletonstructureofcement-stabilizedrockmaterial(CCRM),anewevaluationindexfortheskeletonstructureofCCRMwasproposedfromameso-levelperspectiveanditsvaliditywasverified.Theresultsshowedthattheevaluationresultsofthisindexwereconsistentwithengineeringpracticeandpreviousresearch.Theskeletonindextendedtobestableaftertherotarycompactionmoldingmethodreachedacertainnumberofcompactions,andabetterskeletonstructurewasobtainedafterthevibrationmoldingreachedacertainvibrationtime.Continuedvibra⁃tionwouldcausetheaggregatetosegregatevertically.Rotarycompactioncouldobtainbettercross-sectionalskeletonindicators,andvibrationmoldingcouldobtainbetterlongitudinalcross-sectional...