玄武岩纤维改性沥青混合料路用性能试验研究

《玄武岩纤维改性沥青混合料路用性能试验研究》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、玄武岩纤维改性沥青混合料路用性能试验研究JournalofSoutheastUniversity(EnglishEdition)Vo1.26,No.4,PP.614—617Dec.2010ISSN1003--7985Experimentalstudyofpavementperformanceofbasaltfiber-modifiedasphaltmixtureFanWenxiaoKangHaiguiZhengYuanxun(StateKeyLaboratoryofCoastalandOffshoreEngineering,DalianUniversityofTechnology,Dal

2、ian116023,China)(SchoolofWaterConservancyandEnvironment,ZhengzhouUniversity,Zhengzhou450052,China)Abstract:Todiscussthepavementperformanceofbasaltfiber—modifiedasphaltmixtures.theoptimumdosagesofasphaltandfibersarestudiedbytheMarshalltestandtherottingtest.Theresultsdemonstratethattheoptimumdosage

3、sofasphaltandfibersare4.63%and0.3%.respectively.Thenthepavementperformancesofbasalt(polyester,xylogen)fiber—modifiedasphaltmixturesareinvestigatedthroughhightemperaturestabilitytests.waterstabilitytestsandlowtemperaturecrackresistancetests.Itindicatesthatthepavementperformancesofthefiber—modified

4、asphaltmixturessuchasruttingdynamicstability,freezingsplittingtensilestrength,lowtemperaturecrackresistanceandsoonareimprovedcomparedwithcontrolasphaltmixture.Theresultsshowthatthepavementperformancesofasphaltmixturescanbeimprovedbyfiber—modifiers.Besides,theimprovementeffectsofbasaltfiberaresupe

5、riortopolyesterfiberandxylogenfiber.Keywords:asphaltmixture;basaltfiber;Marshal1test;hightemperaturestabilitytest;pavementperformance.sphaltpavementhasbeenwidelyusedinexpresshigh—waysforitsmeritsofsmoothness,comfortabletravel,1ownoiseandsoon.However.earlydamageofasphaltpavementbecomesmoreandmores

6、eriouswiththeincreaseinaxleloadandtraffic.Therefore.asphaltmixturesshouldbemodifiedinsomewaytopromotetheirpavementperformance.Amongthemodifiersofasphaltmixtures,fi—bershaveobtainedmoreandmoreattentionfortheirexcel—lentimprovementeffects.Theimprovementeffectsofvari—OUStypesoffibermodifierssuchasme

7、thylcellulose.poly—esterandsoon.havebeeninvestigatedandwidelyusedinasphaltmixtures0.Asakindofnewadditiveandstabiliz—erofasphaltmixtures,basaltfiberhasobtainedwideatten—tionforitsexcellenttechnica1characteristics.Basalt