橡膠混凝土抗裂性能研究

1、一肛囤⑧天串大警中國近代第一所大學碩士學位論文一一■K_●■■0■爿|0■啊■●0■■_學科專業(yè)：結(jié)構(gòu)工程作者姓名：張平祖指導教師：瓦景付教授工曲當zⅡ巒生睦2005年12月英文摘要ABSTRACTRubberizedconcreteisanewtypeol’concretebeingstudiedbymanyscholarsintheworldDuetotheadditionofwornouttirerubbergranules，th

2、ecompressivestrengthandsplittingstrengthofrubberizedconcretewillbelowerthannormalconcrete，butthedestroyformwillbechangedfrombrittletoductilewithlargeextensiondeformation，Thehighercapacityofanti—crackandextensionmaymakeit

3、tobeanewsolutionfortheconcretecrackFurthermore，therubbergranulesweremadefromworn—outtires，thestudyonrubberizedconcreteisofgreatimportanceinenvironmentalprotectionMoststudiesonrubberizedconcretefocusedonthecompressivestre

4、ngth、tensilestrength、bendingstrength，andlessonthetheoryandcapacityofanticrackThisdissertationpresentsanexperimentalstudyonthecrackandextensionpropertiesofrubberizedconcreteinthreeaspects：cracksensitivityofcementpaste，fle

5、xuralpropertiesofmortarandtoughnessofconcreteThemaincontentsofthisdissertationinclude：(1)Discusstheinfluencesofrubberdosage，watercementratioandparticlesizeonthecracksensitivitybasedonthecrackingtimeofcirquespecimenprepar

6、ed、vithcementpasteandmortar(2)Studytheflexuralcharacteristicofmortarspecimenandtheinfluencesofrubberdosagebybendingtests(3)InvestigatetheflexuraltoughnessandmechanicsofrubberizedconcretebasedontheexperimentaltestsThetest

7、resultsindicatethat(1)crumbrubbercaneffectivelyenhancethecrackingresistanceofcementpasteThecrackingtimeofcementcirqHepastespecimenweredelayedbyincorporatingofcrumbrubber(2)Thespecimencontainingcrumbrubberexhibitductilefa

8、ilureandunderwentsignificantextensionbeforefracture，themoreoftherubbercontent，thelowerofcompressivestrengthandsplittingtensilestrength(3)AlthoughcompressivestrengthandsplittingtensilestreEIgtharedecreasedwithincorporatin