188宝金博页面版

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188宝金博页面版: Numerical Analysis of Moisture Influential Depth in Concrete During Drying-Wetting Cycles

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内容提示: T S lN G H U A S C I E N C EA N D T E C H N O L O G YI S S N10 0 7 - 0 2 1419 /25p p 6 9 6 - 7 0 lV o lu m e 13 , N u m b e r 5, 0 c t o b e r 2 0 0 8N u m e r ic a lA n a ly siso fM o istu r e In n u e n tia lD e p t hin C o n c r e teD u r in gD ry in g —W ettin gC y c le such u n q iu ( 李春秋), L I K ef ei( 李克非厂, cH E Nzh a o y u a n ( 陈肇元)K e yL a b o r a t o r yo fS t川ctlIra lE n g in e e n n g 蛐dV ib r a “o no fM in istr yo fE d u ca 咖n ,D e p a n m e n to fC iV iIE n g in eerin g , T sin g h u aU n iv ersity , B eijin g10 0 0 8 4 , C h in aA b str a c t: T h e in 稍u en tja ld e p t ho f m o istu r etr a n sp o r tin ac o n c r e tesu r f a c esu bjecttod r y in g - w ettin g c y c Ie sw a sa n a Iy z e d n u m e r ic a ¨ y : T h em o istu r et阳n sp o r tw a s d e sc r ib e db ya d if f l|sio n m o d e l w jth d i舱rI≥ntd i仟u sivi—tIe sf o rd r y in ga n dw e 协n g . Af in ited . 。澹颍澹 ces c h e m ew a sd e v e Io p e dt0 so IV eth ep a rtla Id 讯b 他n tia Ie q u a t. o n sT h e in 们u en tja Id e p thw a sth e nin V estjg a ted n u m e r ic a ¨ yf b rinitia ¨ ysa tu r a te da n du n sa tu r a te d c o n c r e te s e)( .p o se dt0d r y in g - w ettin ga d iO n sin m a r in ee n ...

文档格式:PDF | 页数:6 | 浏览次数:21 | 上传日期:2015-04-14 00:32:12 | 文档星级:
T S lN G H U A S C I E N C EA N D T E C H N O L O G YI S S N10 0 7 - 0 2 1419 /25p p 6 9 6 - 7 0 lV o lu m e 13 , N u m b e r 5, 0 c t o b e r 2 0 0 8N u m e r ic a lA n a ly siso fM o istu r e In n u e n tia lD e p t hin C o n c r e teD u r in gD ry in g —W ettin gC y c le such u n q iu ( 李春秋), L I K ef ei( 李克非厂, cH E Nzh a o y u a n ( 陈肇元)K e yL a b o r a t o r yo fS t川ctlIra lE n g in e e n n g 蛐dV ib r a “o no fM in istr yo fE d u ca 咖n ,D e p a n m e n to fC iV iIE n g in eerin g , T sin g h u aU n iv ersity , B eijin g10 0 0 8 4 , C h in aA b str a c t: T h e in 稍u en tja ld e p t ho f m o istu r etr a n sp o r tin ac o n c r e tesu r f a c esu bjecttod r y in g - w ettin g c y c Ie sw a sa n a Iy z e d n u m e r ic a ¨ y : T h em o istu r et阳n sp o r tw a s d e sc r ib e db ya d if f l|sio n m o d e l w jth d i舱rI≥ntd i仟u sivi—tIe sf o rd r y in ga n dw e 协n g . Af in ited . 。澹颍澹 ces c h e m ew a sd e v e Io p e dt0 so IV eth ep a rtla Id 讯b 他n tia Ie q u a t. o n sT h e in 们u en tja Id e p thw a sth e nin V estjg a ted n u m e r ic a ¨ yf b rinitia ¨ ysa tu r a te da n du n sa tu r a te d c o n c r e te s e)( .p o se dt0d r y in g - w ettin ga d iO n sin m a r in ee n V ir O n m e n t su sin ga ne q u i¨ br iu mtim era ti0∞n cep t. T h e equ i¨ b—r iu m tim e r a tiow a sC a Icu la ted n u m e r ic a “yf o r a sa tu ra ted ∞n d itio n a n d th e m O istu r e in 伺u e n tia Id e p thiss h o w nt0b ea ¨ n e a rf u n ctiO no f th esq u a 怆r o o t0fth ed r y in gtim e . H O w e V e r , th ise q u Ⅲ b r iu mtim e 怕ti0d ∞sn o te x istf o r a nu n sa tu r a te d co n d itjo n a n dth e m o istu r e in 。 en tia Id ep thd e p e n d so n th einitiaI sa tu r a tio n a sw e II a sth ed r y in g - w e ttin gtim e阳t. O . T h e resu 峙in d i∞te th a tth is m O d e Ig iV esm o 旧m a Iistjcp 陀d ictiO n so fm o iS tu 陀t陷n sp o r to f , n s胁strL Jd u 旧I∞n c怕tea n d №d u 阳b I¨ MK 七y w oI. d s: ∞ncrete; d rying - w ettjng cy cles: in 伺u en tia I d ep th : d u r a b 川tyIn tr o d u c tio nT h e d 眦a bilitvo f c o n c r e te stn lc tu r e s is m o stlvr e la te dto m oisnlre咖sf. er’ and inp a r ticu la r , th e in g r e ssio no fch lo rid e io n s in to rein f b rced c o n c r c te m e m b e r sinn la .r in een v iro n m en tsL ¨ . M u ltip le m o istu r e仃a n sp o r tm o d .els h a v e b e e n p r o p o se db a se d o n th r ee m a in m e c h a -n ism s: a b so r p tio n , d if m sio n , a n d p en n ea tio n ¨ j。 . D r y .in g . w e ttin g cy cles御. e id en tif ied a sth em o st u n f . a v o r.d b le c o n d itio n s f. ora g g f e ssiV ee x te m a la g e n t in g r e s-sio n sin ce sIlrf a cea b so r p tio nis m o b iliz e dto m o r e e任i.c ie n tly 仃a n sp o r tw a te r so lu b lea g e n tsiIlto c o n c r e te .T h e u n if ie d d if m sio n m o d elL 斗叫1 c a n n o t g iv erea listicp r e d ic tio n so f th e m o istu r e仃; a 11sp o r t d u r in g d rying ?w e ttin gc v c le s b eca u seⅡ Iec o n c r e ted i丘h siv iW Ⅱ m stb eR eceiv ed : 20 0 7 . 0 4 —25: 佗v ised : 20 0 8 一O l—15幸S u p p o n e dbytlleN a tio n a lN a tu r a l S c ie n c eF o 蚰d a tio n o f C h i他( N o . 50 538 0 6 0 )●?T ow h o mc o 丌e sp o n d e llc esh o u ldb e a d d ressed .E - m a il: lik ef ei@ m a il. tsiIlg h Ila . ed u . cn ; T cI: 86- lO - 627 97 422tr e a te ds。 ra telyf o rd ry in g 狮dw e ttin gp ro cesses【81.M o tiV a te db yth e d e a r th o fc r e d ib lep r e d ic tio n so fm o istu r etra llsp o rtin toc o n c r e ted u r in g d ry in g ?w ettin gcy cles, th is stu d yu se dan啪erica l。穑颍铮 chtoa n a ly z eim rin sic r e la tio n sa n ∞n gth e m o istu r e in f lu en tia ld ep th ,m aterial咖sport p ro p en ies, 邪、 Ⅳell嬲th e d y in g - w et-tin g cy cles.1D if f u sio n —A b so r p tio nM o d e lo fM o istu reT r a n sp o r t1. 1G lo b a l tr a n sp o nm o d e ljn gA u n if ie dd i伽sione q u a tio nisu slla llyu se dto d escm eth eg lo b a lm o istu r etr { m sp o r tinco n cr ete【31,警: 昙f即)警1a缸\、 7 苏』( 1)” 7w h e r e p ism ew a te rsa m r a tio nin m e c o n c r e tep o r e s, xth eco o rd in a te( m m ), fth etim e( s), a n dD th e sa tu r a -tio n —d e p e n d e n tm o istu r ed if m sivity ( m 2. s一1). N o teth a t 万方数据

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