外文翻译--高性能混凝土的耐久性特点：一综述

《外文翻译--高性能混凝土的耐久性特点：一综述》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、本科毕业设计英文翻译院（系部）土木工程学院专业名称土木工程专业年级班级　道桥07-4班学生姓名　周鹏指导老师程朝霞河南理工大学土木工程学院二○一一年六月十日Thedurabilitycharacteristicsofhighperformanceconcrete:areviewAbstractDurabilityproblemsofordinaryconcretecanbeassociatedwiththeseverityoftheenvironmentandtheuseofinappropriatehighwater/binderratios.High-

2、performanceconcretethathaveawater/binderratiobetween0.30and0.40areusuallymoredurablethanordinaryconcretenotonlybecausetheyarelessporous,butalsobecausetheircapillaryandporenetworksaresomewhatdisconnectedduetothedevelopmentofself-desiccation.Inhigh-performanceconcrete(HPC),thepenetr

3、ationofaggressiveagentsisquitedifficultandonlysuperficial.However,self-desiccationcanbeveryharmfulifitisnotcontrolledduringtheearlyphaseofthedevelopmentofhydrationreaction,therefore,HPCmustbecuredquitedifferentlyfromordinaryconcrete.FieldexperienceintheNorthSeaandinCanadahasshownt

4、hatHPCs,whentheyareproperlydesignedandcured,performsatisfactorilyinveryharshenvironments.However,thefireresistanceofHPCisnotasgoodasthatofordinaryconcretebutnotasbadasissometimeswritteninafewpessimisticreports.Concrete,whateveritstype,remainsasafematerial,fromafireresistancepointo

5、fview,whencomparedtootherbuildingmaterials.AuthorKeywords: Curing;Durability;Fire-resistance;Freezingandthawing;HighperformanceconcreteArticleOutline1.Introduction2.Volumetricchanges3.Curingconcrete4.Durability4.1.Generalmatters4.2.Durabilityinamarineenvironment4.2.1.Natureoftheag

6、gressiveaction4.2.2.Chemicalattackonconcrete4.2.3.Abrasionresistance4.3.Freeze–thawresistance5.FireresistanceofHPC5.1.Thechanneltunnelfire5.2.TheDüsseldorfairportfire5.3.Spallingofconcreteunderfireconditions5.4.TheBrite–EuramHITECOBE-1158researchproject6.ConcludingremarksReference

7、s1.IntroductionTherecentdevelopmentsinthefieldofhigh-performanceconcrete(HPC)representagiantsteptowardmakingconcreteahigh-techmaterialwithenhancedcharacteristicsanddurability.Thesedevelopmentshaveevenledtoitbeingamoreecologicalmaterialinthesensethatthecomponents––admixtures,aggreg

8、ates,andwater––areusedtotheirfull