補償收縮混凝土在渠道防滲工程中的應用研究.pdf

1、F1132805#嘗日』盟醴Lgt，—＆E—一西弛農林希軛大學2007屆攻讀碩士學住研究生學位(畢業(yè))論文補償收縮混凝土在渠道防滲工程中的應用研究學科專業(yè)研究方向研究生指導教師完成時問壅些塞王墨壅些芷盔翌監(jiān)蘭箍拄丕塞疊置耋塞墨五援』鯉量盟—————一中一陡●枷圣STUDYONAPPLICATIONOFSHRINKAGECOⅣ口ENSATINGCONCRETEINSEEPAGECONTROLOFIRRIGATIONCANALABSTRAC

2、TTheconcreteinseepagecontrolofirrigationcanalisoneofthemostwidelyusedtechnologiesTheuppermostproblemisthecrackincanalliningconcreteManyexamplesofengineeringprojectindicatethatthecrackswhichcausedconcreteshrinkagewilldecr

3、easethemechanicalperformanceofcollcreteaffecttheusinglifeandwmerti出andwaterconservationofcanalAtthesametimethecrackwiUcausetheeconomic10stThethesisanalyzedtheresearchresultofpredecessor，made哪oftheseconddegreepolynomialre

4、gressionanalysisandorthogonalrotationdesigntoarrangetheexperimentresearchedThelawofinfluenceofcoIlcreteonexpansionratioandmechanicalpropertydiscussedtheapplicationfeasibilityofshrinkagecompensatingconcreteanddesignofsupe

5、rlongreinforcedconcretestructureforimperviouschannelsMainresults黜asfollows：(1)Thethesisanalysisthemaineffect、singlefactoreffectandtheinteractioneffectofeachfactorFly—ashwastheremarkablefactors，Itasmixtureinoonereteoandec

6、reasethewaterquantitysuppresstheconcreteshrinkageAtthetime，thepozzolaniceffectofflyashcouldmakeC—SHsolgelswhichcouldfilltheporestructureSoflyashcouldcompensatetheconcreteshrinkage(2)Thecrystalofettringiteistheproductofex

7、pansiveagentandcementhydratedandconsolidatedincompensationshrinkageconcreteprojectAsaresultthesewaterabsorptioncrystalswillcausetheconcretemicroexpansiveThecompensationshrinkageofconcretehasthebesteffcet，whichtheadmixtur

8、eofexpansiveagentisappropriate(3)TherelationshipbetweenwatercementratioandexpansiveoftheconcreteisrathercomplicatedWatercementratiocouldaffectthehydrationprocessandstrengthdevlopmentofconcreteTheexperimentresultsindicate

9、dthatanadditionof10％expansiveagent40％flyashandwatercementratio04，istheoptimumadmixture(4)WehadtosolvetheproblemofconcreteshrinkageandhavefewpostpouredstripofconcretecallalThenoseamdesignandconstructionofsuperlengthconcre

10、testructureisa∞wtypcdofdesignandconstructionmethodThearticlestatedtheprincipeofc0咖p即s缸cdshrinkageconcrete，discusedthetheoreticalandmeaningofnoseamdesignandconstructionofsuperlengthconcretestructure；proposedthedesigningme