土木建筑毕业设计外文翻译--混凝土受持续高温影响的强度的研究

《土木建筑毕业设计外文翻译--混凝土受持续高温影响的强度的研究》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、外文资料STUDIESONIMPACTSTRENGTHOFCONCRETESUBJECTEDTOSUSTAINEDELEVATEDTEMPERATURESureshNARAYANConcretehasaremarkablefireresistingproperties.Damageinconcreteduetofiredependsonagreatextentontheintensityanddurationoffire.Spallingcrackingduringheatingarecommonconcretebe

2、haviourobservedintheinvestigationofthefireaffectedstructures.Plentyofliteratureisavailableonthestudiesofconcretebasedontimetemperaturecures.Inpower,oilsectorsandnuclearreactorsconcreteisexposedtohightemperatureforconsiderableperiodoftime.Theseeffectscanbereckon

3、edasexposuretosustainedelevatedtemperature.Thesustainedelevatedtemperaturemaybevaryingfromafewhourstoanumberofyearsdependinguponpracticalconditionofexposures.Theknowledgeonpropertiesundersuchconditionsisalsoofprimeimportanceapartfromthestructuressubjectedtohigh

4、intensityfire.Impactstudiesofstructuresubjectedtosustainedelevatedtemperaturebecomesmoreimportantasitinvolvessensitivestructureswhichismorepronetoattacksandaccidents.Inthispaperimpactstudiesonconcretesubjectedtosustainedelevatedtemperaturehasbeendiscussed.Exper

5、imentshavebeenconductedon180specimensalongwith180companioncubespecimens.Thetemperaturesof100°C,200°Cand300°Cforadurationofexposureof2hours4hoursand6hourshasbeenconsideredintheexperiments.Theresultsarelogicallyanalyzedandconcluded.1.INTRODUCTIONTheremarkableprop

6、ertyofconcretetoresistthefirereducesthedamageinaconcretestructurewheneverthereisanaccidentalfire.Inmostofthecasestheconcreteremainsintactwithminordamagesonly.Thereasonbeinglowthermalconductivityofconcreteathighertemperaturesandhencelimitingthedepthofpenetration

7、offiredamage.Butwhentheconcreteissubjectedtohightemperatureforlongdurationthedeteriorationofconcretetakesplace.Henceitisessentialtounderstandthestrengthanddeformationcharacteristicsofconcretesubjectedtotemperatureforlongduration.Inthispaperanattempthasbeenmadet

8、ostudythevariationinImpactStrengthofconcretewhensubjectedtoatemperaturerange100oC,200oCand300oCsustainedforaperiodof2hrs,4hrsand6hrs.10Thereviewoftheliteratureshowsthataloto