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1、外文参考资料MechanicalpropertiesofperviouscementconcreteCHENYu1,WANGKe-Jin2,LIANGDi11.SchoolofTrafficandTransportationEngineering,ChangshaUniversityofScienceandTechnology,Changsha410004,China;2.DepartmentofCivil,ConstructionandEnvironmentalEngineering,IowaSt
2、ateUniversity,Ames,IA50010,USA©CentralSouthUniversityPressandSpringer-VerlagBerlinHeidelberg2012Abstract:Compressiveandflexuralstrength,fractureenergy,aswellasfatiguepropertyofperviouscementconcretewitheithersupplementarycementitiousmaterials(SCMs)orpo
3、lymerintensified,wereanalyzed.TestresultsshowthatthestrengthdevelopmentofSCM-modifiedperviousconcrete(SPC)differsfromthatofpolymer-intensifiedperviousconcrete(PPC),andporosityhaslittleeffectontheirstrengthgrowth.PPChashigherflexuralstrengthandremarkabl
4、yhigherflexural-to-compressivestrengthratiothanSPCatthesameporositylevel.Resultsfromfracturetestofperviousconcretemixeswithporosityaround19.5%showthatthefractureenergyincreaseswithincreasingthedosageofpolymer,reflectingtheductiledamagefeaturesrathertha
5、nbrittleness.PPCdisplaysfarlongerfatiguelifethanSPCforanygivenfailureprobabilityandatanystresslevel.Itisprovedthattwo-parameterWeibullprobabilityfunctiondescribestheflexuralfatigueofperviousconcrete.Keywords:perviousconcrete;strength;fracture;fatigueli
6、fe1IntroductionPerviouscementconcretewasaconcretewithcontinuousvoidsthatwereintentionallyincorporatedintoconcretebyblendingwithnoorverylittleamountoffineaggregates.Cementitiousmaterialswerenotenoughtofillthevoidsamongcoarseaggregateswithspecialparticle
7、-sizedistributiontomakeinterconnectedmacropores[1−2].Therangeofporositythatwascommonlyreportedforperviousconcreteutilizedinpavement,wasabout15%−25%[3−4].Thesignificantlyreducedstrengthofconventionalperviousconcreteduetohighporosity,notonlylimiteditsapp
8、licationinheavytrafficroadsbutalsoinfluencedthestabilityanddurabilityofthestructures,becauseof,forexample,susceptibilitytofrostdamageandlowresistancetochemicals.However,byusingappropriatelyselectedaggregates,silicafume(SF)ororganicinten
