大掺量粉煤灰混凝土配合比设计方法的研究

。、。3.5。TunnelandBlowupthePoisonousGasProducedandPreventandCuretheMeasureintheTunnelXieWenhuiHaoXiumingAbstract:Atpresent,intunnellingandinexcavating,getintoeyesblowupmethodasoneeconomicconstructionmeansofuniversity,welloflane,havealreadygotExtraordinaryextensiveapplication.Thearticlehaspointedoutthatproducestheharmfulnessandreasonofthepoisongaswhenthewelllaneistunnelledandblownup,propositionPreventandcurethemeasure.Keywords:tunnelandblowup;harmfulgas;preventandcurethemeasure350500。TU528.53A1000-8136(2009)29-0016-03。。。11.11、。2。3。4、。5。6。1.2、、。、(W/C≥0.6)、(W/C0.3)。。。。。。()。。、。FriendofScienceAmateurs200910(29)B16--。。1.3。(W／C+F)。。300kg/m3~350kg/m30.45~0.5528d35MPa~40MPa(C30)。W/C、。15％。25％。Bolonmey。。。。22.1++。1。。。2。。0.40。。3。。。4。。5。6。、。2h。33.1KFC+F＝K1-β1+K1β:F:;C:K:。3.2WW=1000×j×1-30-T160ββ19ββ2T:j:。3.3WC+βF=fcu.k+43.8K20.71Rc+0.1ββ1-13fcu.k:Rc:β:W:C:K:F:。3.4C、FCFC＝WWC+βF1-β1-βββK4F＝KC1-β(1+K)5βWCK。3.5SPNSPNFriendofScienceAmateurs200910(29)B17--SP=0.6-(1-SP)ρSF+SPρGρSFρG1000-10αW---1WC+βF-1ρCF---11ρCF+WC+βF--6N=1ρCF+WC+βF0.6-SP7ρCFρGρSFα。3.6SGSGS＝SPNC+β--F-1---βF8G=S+(1-β)--F1-SP--SP944.1。42.5IIβ=0.515.58%α=98%ρSF=2.58g/cm3ρCF=2.72g/cm3()ρS=2.65g/cm3PG=2.7g/cm3DG-Ij=0.850%T=18cmfcu.k=40kPa。。4.211Kβ=0.51150%K1-0.5--11+--K=50%K=0.4。22Wj=0.8T=18cm2W=1000×0.8×1-30-18160--19--=200kg33fcu.k=40KPaK=0.4RC=42.53WC+βF=40+43.8×0.420.71×0.51×42.5+0.1--12=0.67445CFK=0.40.674C=0.40.67×1-0.511-0.51×0.4--1=174kgF=0.41-0.51×(1+0.4)×174=243kg567SpNρSF=2.58g/cm3ρS=2.65g/cm3PG=2.7g/cm3α=98%W=200kgβ=0.51F=243kgC=174kg2.72g/cm36SP=0.6-1-SP--×2.58+2.7SP2.58×2.71000-10×98%200---1×0.67-12.72---112.72+0.6--7SP=0.437N=12.27+0.670.6-0.43=6.03689SGSP=0.43N=6.038S=0.43×6.03×174+0.51×243-1-0.51×243=653kgS=653kg9G=653+1-0.5--1×24--31-0.4--30.43=1023kgW∶C∶F∶S∶G=200∶174∶243∶653∶1023。。55。MixestheQuantityPulverizedCoalAshProportioningofConcreteDesignMethodGreatlytheResearchXueChengkaiAbstract:Inviewofthepresentpulverizedcoalashmixtureratiodesigntheory'sshortcoming,takesthepulverizedcoalashintheconcretesonekindofindependentcomponent,hasstudiedthepulverizedcoalashtotheconcreteseffect,basedonthisproposedmixesthequantitypul-verizedcoalashproportioningofconcretedesigngreatlytheformula.Keywords:pulverizedcoalashconcretes;mixtureratio;designmethod18--