纤维增强陶粒混凝土耐高温性能的实验研究

《纤维增强陶粒混凝土耐高温性能的实验研究》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、兰州理工大学硕士学位论文纤维增强陶粒混凝土耐高温性能的实验研究姓名：孙庆霞申请学位级别：硕士专业：结构工程指导教师：曹万智;周茗如20090501纤维增强陶粒混凝十耐高温性能的试验研究AbstractLi曲tweightaggregateconCrete埘mabulkdensi够ofsmll、goodtlle肌almsulationpropeniesaIldothercharacteriStics．Inadditiontobeing谢delyusedinmdustrial锄dcivilconst九JC

2、tionoft11e、Ⅳallandmeload—be撕ngstnJctures，itcanalsobeusedforbridges、poles、chi咖eys、re胁cto巧liningofhigh—temperature胁ceand0therspecialstnlctures．Butitlackoftllestudyoffire-resist肌tperf．ormanceandpoSt-disasterd锄ageassessmentandrepairaboutli曲懈eightaggregateco

3、ncretestmcture，andsomeonlystayinaqualitatiVestudy，tlleresearchondomesticareatt11eimtialstage，thedepthaIldbreadthofresearCharelesst11anordinaD，concre

4、ce，butalsolackof印propriatefire-resistantdesignspecificationsandtecⅢcalregulations．Inviewof“ssi删on，tllisa

5、niclediscussedon瑚【edlaIlicalproperties趾d面cf0Stmctureonlight、veightaggregateconcreteanerhightemperature．Int11ispaper'E珥，erimental咖dyonllightemperatllreperfo册锄ceforsixdi任brent锣pesofconcrete，firstofall，startiIlg丘．0m廿1eresidualstrengthtoanalysisofthecllange

6、siIlla．ws趾dmechallismaboutconcreteunderllightemperatureperformallce，andgiVentheproposedf．ommlaforcaLlculating；Observationtlleconcretemicr0一stmctllrcaRerdi脏renttempcraturesofdifrerent够pes、differentparts、^，hichuseelectmnmicroscopy(SEM-EDAX)wmchhaVeenergyd

7、ispersiVeX—rayspectminstmment；andpreliIIlina巧咖dyc枷edoutoftheli曲t、Ⅳeightaggregateconcreteinengineeringapplications．Theresultsshowt11at：(1)t11elightweightaggregateconcreteaRerhightemperatureresidualsn．engthcIlrVeformulawllichStatisticsgiVenareingoodagreem

8、entwithmeexperimentalresults．(2)’nlebestllightemperatureofall—light、^，eightaggregateconcrete，follo、Ⅳedbys砒ldlighlweightaggregateconcrete，t11eworstofordina巧aggregateconcrete．(4)ARerhi曲tempera．tureⅡ1eli对帆dghtaggregateconcretehavechangedincolorandlossedinq

9、uali研(5)The“crostructu帆：willproduceaseriesofckmgesaRerheating，atdi任．erenttempera如】res，theC—S-Hgel、Ca(oH)2c巧stalsandthe谳erf．acial缸ansitionzonebe铆eenaggregateandcolloidalandotherIIlicroSt]rLlcturehavedi舵rentcharacteristics，t11esef．