低摻量鋼-聚丙烯混雜纖維混凝土彎曲韌性及試驗(yàn)方法研究.pdf

1、中南大學(xué)碩士學(xué)位論文低摻量鋼聚丙烯混雜纖維混凝土彎曲韌性及試驗(yàn)方法研究姓名：肖柏軍申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料學(xué)指導(dǎo)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