Title of article :
ThirtyyearsofmeasuredprestressatSwedishnuclearreactorcontainmentsReviewArticle
Author/Authors :
PatrickAnderson، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Abstract :
Themainfunctionofthereactorcontainment,i.e.toensuretightnessatamajorinternalaccident,dependsdirectlyontheprestressingsystem.Tosecurethattheprestresslevelissufficient,thetendonforcehasbeenmeasuredduringthewholetimeofoperation.Thegeneralresultsfromthesemeasurementsshowthatthelossofprestress30yearsaftertensioningisbetween5and10%.Thisismuchlowerlossthanpredictedinitiallyatthedesignstage.Moreadvancedandtodaycommonlyusedmodelsforpredictingprestresslossshowbetteragreementwiththeresults.Themainreasonsfortherelativelylowlossareassumedtobe:(1)theconfirmedslowdryingprocessoftheconcreteand(2)thehighconcreteageattheinitialtensioning.Theresultsalsoindicatethatthetemperaturehasamajorinfluenceonthelossofprestress.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
