低摻量鋼-聚丙烯混雜纖維混凝土彎曲韌性及試驗方法研究.pdf

1、中南大學碩士學位論文低摻量鋼聚丙烯混雜纖維混凝土彎曲韌性及試驗方法研究姓名：肖柏軍申請學位級別：碩士專業(yè)：材料學指導教師：胡曉波20071001ABSTRACTFiberhy7bridisgoodtoimprovethetoughnessofcementreinforcedconcrete，andithasnowarousedgeneralattentionbothathomeandabroadInChina，however’thest

2、udyonflexuraltoughnessofsmallervolumesteelfiberpolypropylenehybridreinforcedconcreteisfewatthemomentThecurrentwaytoassessflexureoffiberreinforcedconcretestillhassomeproblemstobesolvedTherefore，it’Sdifficulttoknowitsadvan

3、tagesonthetoughness，whichaffectsitsapplicationinprogramsThepaperdidresearchesonthefollowingaspects1BaseonanalysizingtheeffectOilconcretestrengthanditsworkableperformancebysteelfiberandpolypropylenehybddfiberchosetowell—f

4、urnishsmallervolumesteelfiberpolypropylenehybridreinforcedconcretewhichcanmeettherequirementofconstructiontechnologyandisofmiddleandlowgrade2Withtheuseofsmalltestingmachine，conducttheresearchonexperimentalmethodsforflexu

5、raltoughnessoffiberconcreteInapplywimsampleswimgapsandshortbeams，analyzedtheeffectonstressfieldatthebottomofgapanddamagebythreegapsofdifferentsharpsthroughANSYS，anditshowedthatcomparedwiththeresultofCECS13：89，theload—def

6、lectioncurveofsampleswitllgapsandshortbeamsisobviouslyround，ofexperimentaldataissmallerandmixmumnumberofsamplesinconfidenceintervalisalsomuchlower3Perfomtheresearchonmethodsofevaluation011flexuraltoughnessoffiberconcrete

7、OnthebasisofreferencestoGermanDBVandcurve，whenmeasuredD2‘，placed315mmwith265mmfor62；DefinedandworkedoutD3‘Inordertomakeequivalentloadmorepractical，analysizedcl、c2、C3inthecomputationalformulaforequivalentloadwithrespectiv