高强自密实混凝土的试验研究

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1、重庆大学硕士学位论文高强自密实混凝土的试验研究姓名：唐伟申请学位级别：硕士专业：材料工程指导教师：张驰;金永树20051001重庆大学硕士学位论文中文摘要该文利用成都地区现有材料，通过正交设计配制出C50、C60自密实免振捣混凝土，并通过实际工程成功应用。着重讨论目前国内尚无统一量化标准的混凝土拌合物和易性测试方法，简易可行。总结了自密实混凝土的配制机理，分析探讨了高性能混凝土自收缩机理及改善措施。最后对高性能混凝土的产业化发展提出自己的看法。关键词：高强自密实混凝土，水胶比，流动性品质II重庆大学硕士学位论文英文摘要ABSTRACTConcretehasbeenr

2、egardedlastinganddurable.ButIt’sprobablynotdurableinwater，exposetoairordifficultyambientinfact.Inpracticemanhopesthatconcreteismechlongerages，muchdurablenotonlystrength.Inespecialnowman’sutilizationondrylandhasbeenslowlyimpregnated.Inthe21thcentury，themostutilizationwillbeonthesea、moon

3、、desolation、desertandsoon.Buthighstrengthconcretehasmanydefectsitself.Mainlyfoy：withhigherstrengthbemuchfragility；thefinalstrengthincrementsaresmallerforhighvolumesilica-ashconcrete；becausehighstrengthconcrete’sself-shrinkageislarge，sothedeformationperformanceismuchseverelywiththestren

4、gthincrements.Inthe20thcenturyeighties，mandefinedthehighperformanceconcreteintermsofnotonlyhighstrengthbutalsofinedurability.Chinesehighperformanceconcreteinstituteworkersregard：thehighperformanceconcrete’sfirstrequisitionisdurability，thenmustbeliabletoindustrialmanufactureandpumpeddel

5、ivery.Thelasttenyears，manycivilgovernmentsarepayingmucherregardingtotheutilizationofthehighperformanceconcrete.Self-Compactingconcreteisfillsformworkandenclosesreinforcementitselfongravitationbutnotonforcedvibration.Thebindershassupperfluidness、bondingcapacity、waterretentivity、fillerpr

6、operties，nosegregation，nobleedingandsuppermechanicalpropertiesafterharden.Itisoneofhighperformanceconcrete.JapanesehavebeenresearchedSelf-Compactingconcretefrom1987，andusedmorethan1.2millionslitres.JapaneseArchitecturescienceInstitutehasputoutmanualformixtureproportioning，productionand

7、placementofSelf-Compactingconcrete，andrecommendationforSelf-Compactingconcrete.It’sknownthatJapanesehavebeenactulyappliedresearchagesforSelf-Compactingconcrete.OurcountrybegeingedtoresearchforSelf-Compactingconcretefromtheearlyofthe90th.Beijing、shanghaiandShenzhenappliedSelf-Compacti