高性能混凝土研究与发展现状

i中文摘要摘要：随着我国改革开放和现代化进程的加快，我国的建设规模正日益增大，如何保证建筑工程质量的同时也能使工程能长久的安全使用下去，日益受到各级政府和社会各界的广泛关注。在众多的土木工程建设中，混凝土的应用面之广，使用次数之多是很少见的。尤其中近年来，一种较新的混凝土技术正在快速发展并且运用到许多实际工程项目中，那就是高性能混凝土。高性能混凝土（HighPerformanceConcrete，HPC）由于具有高耐久性、高工作性、高强度和高体积稳定性等许多优良特性，被认为是目前全世界性能最为全面的混凝土，至今已在不少重要工程中被采用，特别是在桥梁、高层建筑、海港建筑等工程。本文主要介绍了高性能混凝土发展的历史背景及目前国内外的研究现状，阐明了高性能混凝土的特性，列举了高性能混凝土在国内外研究应用中的重要成果，并对其发展趋势作出展望。随着我国建筑向高层化、大型化、现代化的发展，HPC必将成为新世纪的重要建筑工程材料。关键词：高性能混凝土；耐久性；体积稳定性iiABSTRACTTitle：ThecurrentresearchanddevelopmentofhighperformanceconcreteABSTRACT：AsChina'sreformandopeningupandmodernization，Chinaisincreasingthesizeofthebuilding，howtoensuretheconstructionqualityofengineeringcanalsocanmakelong-termsafeuseofit，isbeingpaidmoreandmoreattentionatalllevelsofgovernmentandthesocialfromallwalksoflife.Inmanycivilengineeringconstruction，theconcreteapplicationrange，usefrequencyisveryrare.Especiallyinrecentyears，anewconcretetechnologyisrapidlydevelopedandappliedtomanypracticalengineeringprojects，thatisthehighperformanceconcrete.Highperformanceconcrete（HighPerformanceConcrete，HPC）duetoitshighdurability，highworkability，highstrengthandhighvolumestabilityandmanyotherfinefeatures，isconsideredtheworld'smostcomprehensiveperformanceofconcrete，hasbeenadoptedinmanyimportantprojects，especiallyinhigh-risebuilding，bridge，harborconstructionengineering.Thispapermainlyintroducesthedevelopmentofhighperformanceconcretehistoricalbackgroundandcurrentresearchsituationathomeandabroad，andexpoundsthecharacteristicsofhigh-performanceconcrete，thehigh-performanceconcreteinthedomesticandforeignresearchapplicationofimportantachievements，andprospectsforitsdevelopmenttrend.WiththedevelopmentofChina'sbuildingtotop，largescale，modern，HPCwillbecomeanimportantbuildingmaterialforthenewcentury.KEYWORDS：Highperformanceconcrete：durability：volumestabilityiii目录中文摘要.............................................................................................................................iABSTRACT.......................................................................................................................ii1高性能混凝土产生的背景和研究现状......................................................................11.1背景.....................................................................................................................11.2研究现状及发展方向...........................................................................................21.2.1绿色高性能混凝土.....................................................................................21.2.2超高性能混凝土.........................................................................................22高性能混凝土的性能研究和应用分析.........................................................................32.1高性能混凝土的概念............................................................................................32.2高性能混凝土的性能...........................................................................................32.2.1耐久性.........................................................................................................32.2.2工作性.........................................................................................................32.2.3力学性能.....................................................................................................32.2.4体积稳定性.................................................................................................42.2.5经济性.........................................................................................................42.3高性能混凝土的特点............................................................................................42.3.1高耐久性能.................................................................................................42.3.2高工作性能.................................................................................................43高性能混凝土质量与施工控制.....................................................................................63.1高性能混凝土原材料及其选用............................................................................63.1.1细集料.........................................................................................................63.1.2粗集料.........................................................................................................63.1.3细掺合料.....................................................................................................63.1.4减水剂及缓凝剂.........................................................................................73.1.5矿物掺合料.................................................................................................73.2配合比设计控制要点...........................................................................................73.2.1.设计思路有很大区别.................................................................................73.2.2胶凝材料用量及粉煤灰所占比例.............................................................83.3高性能混凝土的施工控制...................................................................................83.3.1搅拌.............................................................................................................83.3.2