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1、1.IntroductionThankyouverymuch.Mr.Jiao,foryourkindintroduction.Ladiesandgentlemen,Goodafternoon!MynameisLijia,camefromHarbinEngineeringUniversity.Iamhonoredtohavebeeninvitedtospeakatthisconference.BeforeIstartmyspeech,letmeaskaquestion.Doyouknowwhatcanaffectthepropertiesoffoamconcrete?Doyouthin
2、khowtoreinforcedthepropertiesoffoamconcrete?Mostoftheinvestigationsonfoamconcreteinthepasthavebeenconfined(被限于)toneatcementpaste,cementpastewithpartialreplacementwithadmixturesandtocement–sandmixes.Today,mytopicisaboutInfluenceoffillertypeonthepropertiesoffoamconcrete.Iwanttoshareourinterestingres
3、earchresultonreinforcedconcreteframewithyou.Thecontentofthispresentationisdividedinto4parts:Insection1,Iwillintroducewhatisthefoamconcrete.Insection2,IwilltalkaboutParametersinvestigatedandmixcompositions.Insection3,IwillgiveEffectofwater–solidsratioondesigndensity.Andfinally,Iwillmakeaconclusio
4、n.2.BodySection1:thefoamconcreteNow,Iwillintroducethefoamconcrete.Pre-formed(成型的)foamconcreteismanufactured(加工)byaddingfoam,preparedbyaerating(充气)afoamingagentsolution,tocementpasteorcementmortar(灰浆).Thecomposition(合成物),physicalproperties(性能)andusesoffoamconcretewerediscussedindetail(详细的)byValo
5、re,ShortandKinniburgh,RudnaiandTaylor.Althoughseveralinvestigationshavebeenconductedonthepropertiesoffoamconcrete,mostofthemdealwithcement–sandmixes,neatcementpastewithorwithoutpartialreplacement(局部替换)usingadmixtures(掺合料).Fewstudiesreportontheinfluenceoffillertypeonthepropertiesoffoamconcrete.Byu
6、singflyash(粉煤灰)asfiller(fineaggregate细骨料)insteadofsand,thehighvolume(体积)utilization(利用)offlyashbecomespossible可能,thusprovidingameansofeco-nomic(经济)andsafedisposal(处理)ofthiswasteproduct.Comparison(比较)ofstrengthofair-curedfoamconcretemadewithcement-sandandcement–flyashformasonry(砌体结构)byDurackandWeiqin
7、gshowthatforproductsofcomparabledensity(比较密度),mixeswithflyashasfineaggregateinplaceofsandgaverelativelyhigherstrength.Section2:Parameters(参数)investigatedandmixcompositions(组成成分)Somuchforthefoamconcrete,nowIwillmoveontoParameters(参数)