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Correlation of chloride diffusion coefficient and microstructure parameters in concrete: A comparative

Yurong ZHANG, Shengxuan XU, Yanhong GAO, Jie GUO, Yinghui CAO, Junzhi ZHANG

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1509-1519 doi: 10.1007/s11709-020-0681-9

Abstract: Furthermore, the chloride diffusion coefficient of concrete was measured to explore its correlation withA strong correlation is observed between the chloride diffusion coefficient and the porosity or contributiveMoreover, microstructure parameters measured via NMR reveal a lower correlation coefficient versusthe chloride diffusion coefficient relative to the parameters determined via MIP, as NMR can measure

Keywords： permeability     microstructure     NMR     MIP     X-CT    

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Moisture diffusion behavior of permeable fiber-reinforced polymer composite

Jianjiang YANG, Qingsheng YANG, Lianhua MA, Wei LIU,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 347-352 doi: 10.1007/s11465-010-0093-y

Abstract: A unit cell approach is employed to predict the effective moisture diffusion property in fiber-reinforcedBased on a unit cell model, the calculation method for moisture diffusion coefficients is developed inMoisture diffusion property and effective diffusion coefficients are numerically investigated under differentThe present result shows that the effective diffusion coefficient of a composite depends on both temperatureThe effective diffusion coefficient of regular hexagon pattern composite is larger than that of square

Keywords： fiber-reinforced biopolymer     effective diffusion coefficient     unit cell     finite element modeling (FEM)    

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Influence of initial curing conditions and exposure environments on chloride migration in concrete using electrochemical method

Wen XUE, Weiliang JIN, Hiroshi YOKOTA,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 348-353 doi: 10.1007/s11709-010-0077-3

Abstract: The effective chloride diffusion coefficients () were calculated from the steady-state on the basis ofcuring conditions and the wet-dry interval of external environments have coupling influence on effective diffusioncoefficient of chloride ion significantly.

Keywords： durability     effective diffusion coefficient     steady-state     migration test    

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Engineering in Marine Environments of Northern China Based on a Modified Theoretical Model of Chloride Diffusion Article

Taotao Feng, Hongfa Yu, Yongshan Tan, Haiyan Ma, Mei Xu, Chengjun Yue

Engineering 2022, Volume 17, Issue 10,   Pages 123-139 doi: 10.1016/j.eng.2021.03.030

Abstract: Based on a modified theoretical model of chloride diffusion and the reliability theory, the service livesof the different time-varying relationships of the boundary condition (Cs) and diffusioncoefficient (Df) on the service life were compared; the results showed that the

Keywords： Large datasets     Modified theoretical model     Reliability theory     Service life     Boundary condition     Diffusioncoefficient    

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A comprehensive assessment on the durability of gas diffusion electrode materials in PEM fuel cell stack

Arunkumar JAYAKUMAR

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 325-338 doi: 10.1007/s11708-019-0618-y

Abstract: The crucial and expensive component involved in it is the gas diffusion electrode (GDE) and its degradation

Keywords： PEM fuel cell     gas diffusion electrode(GDE)     gas diffusion layer(GDL)     membrane electrode assembly     durability    

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Coupled diffusion of chloride and other ions in saturated concrete

Nattapong DAMRONGWIRIYANUPAP, Linyuan LI, Yunping XI

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 267-277 doi: 10.1007/s11709-011-0112-z

Abstract: The diffusion of chloride ions is associated and strongly affected by other ions in the pore solutionstructures was mathematically characterized by the Nernst-Planck equation which considered not only diffusionThe material models of chloride binding capacity and chloride diffusion coefficient were incorporated

Keywords： diffusion     chloride     concrete     Nernst-Planck equation     durability    

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Experimental study of humid air reverse diffusion combustion in a turbulent flow field

GE Bing, ZANG Shusheng, GU Xin

Frontiers in Energy 2007, Volume 1, Issue 4,   Pages 428-434 doi: 10.1007/s11708-007-0062-6

Abstract: Experiments were performed to investigate the differences between the propane/air turbulent diffusionreactive flows past bluff-body and the propane/humid air turbulent diffusion reactive flows in the same

Keywords： propane/humid     propane/air turbulent     bluff-body     turbulent diffusion    

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Preparation of a Pb loaded gas diffusion electrode and its application to CO

Ang LI, Hua WANG, Jinyu HAN, Li LIU

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 381-388 doi: 10.1007/s11705-012-1216-2

Abstract: A Pb loaded gas diffusion electrode was fabricated and used for the electroreduction of CO to formicThe preparation conditions of the gas diffusion electrode were optimized by adjusting the amounts ofpolytetrafluoroethylene (PTFE) in the gas diffusion layer and acetylene black in the catalytic layer.The electrochemical performance of the as-prepared gas diffusion electrode was studied by chronoamperometryThe optimized gas diffusion electrode showed good catalytic performance for the electroreduction of CO

Keywords： electroreduction     carbon dioxide     lead catalyst     gas diffusion electrode     formic acid    

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evaluation of renal function using diffusion weighted imaging and diffusion tensor imaging in type 2

Xiaoyan Chen,Wenxia Xiao,Xinchun Li,Jianxun He,Xiaochun Huang,Yuyu Tan

Frontiers of Medicine 2014, Volume 8, Issue 4,   Pages 471-476 doi: 10.1007/s11684-014-0365-8

Abstract:

This work aims to estimate the value of diffusion weighted imaging (DWI) and diffusion tensor imagingDWI and DTI scans were performed on bilateral kidney using SE single-shot EPI, and apparent diffusioncoefficient (ADC) and fractional anisotropy (FA) of the renal parenchyma was determined from ADC and

Keywords： type 2 diabetes mellitus     microalbuminuria     diffusion weighted imaging     diffusion tensor imaging     early-stage    

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Magnetohydrodynamic slip flow and diffusion of a reactive solute past a permeable flat plate with suction

Krishnendu BHATTACHARYYA, G. C. LAYEK

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 471-476 doi: 10.1007/s11705-011-1130-z

Abstract: The magnetohydrodynamic (MHD) boundary layer slip flow and solute transfer over a porous plate in the presence of a chemical reaction are investigated. The governing equations were transformed into self-similar ordinary differential equations by adopting the similarity transformation technique. Then the numerical solutions are obtained by a shooting technique using the fourth order Runge-Kutta method. The study reveals that due to the increase in the boundary slip, the concentration decreases and the velocity increases. On the other hand, with an increase in the magnetic field and mass suction, both boundary layer thicknesses decreased. As the Schmidt number and the reaction rate parameter increases, the concentration decreases and the mass transfer increases.

Keywords： slip flow     MHD boundary layer     reactive solute diffusion     flat plate     suction/injection    

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Molecular diffusion in ternary poly(vinyl alcohol) solutions

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 1003-1016 doi: 10.1007/s11705-021-2121-3

Abstract: The diffusion kinetics of a molecular probe—rhodamine B—in ternary aqueous solutions containing poly(We show that the diffusion characteristics of rhodamine B in such complex systems is determined by aThe presence of glycerol has no noticeable impact on rhodamine B diffusion at low concentration, butsignificantly slows down the diffusion of rhodamine B above 3.9% (w/v) due to a dominating steric inhibitioncoefficient of the molecular probe.

Keywords： fluorescence correlation spectroscopy     poly(vinyl alcohol)     anomalous diffusion     crowding effects     dynamic    

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Reaction kinetics and internal diffusion of Zhundong char gasification with CO

Yun Liu, Jiangyuan Qu, Xuehui Wu, Kai Zhang, Yuan Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 373-383 doi: 10.1007/s11705-020-1949-2

Abstract: The effect of internal diffusion on char gasification with CO in the temperature range from 1123 K toThe results revealed that the effect of internal diffusion on the initial reaction rate was more significantThus, temperature zones corresponding to chemical reaction and diffusion control were identified.Moreover, the calculated effectiveness factor provided a quantitative estimation of internal diffusion

Keywords： coal char     CO2 gasification     internal diffusion     pore evolution    

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Chloride diffusion in concrete with carbonated recycled coarse aggregates under biaxial compression

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 637-648 doi: 10.1007/s11709-023-0902-0

Abstract: In this study, the chloride ion diffusion and deformation properties of recycled concrete after carbonizationthe performance of the recycled aggregates and reduces their porosity, thereby reducing the chloride diffusioncoefficient of the recycled concrete under different compressive load combinations.

Keywords： recycled concrete     carbonated recycled coarse aggregate     biaxial compression     chloride diffusion     stress    

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Fuel variability effect on flickering frequency of diffusion flames

Jizhao LI, Yang ZHANG

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 134-140 doi: 10.1007/s11708-009-0034-9

Abstract: The intent of this study is to investigate the fuel variability on the flickering frequency of diffusion

Keywords： fuel variability     flickering frequency     diffusion flames     dynamics of combustion    

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Transient process of methane-oxygen diffusion flame-street establishment in a microchannel

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 988-999 doi: 10.1007/s11708-021-0755-y

Abstract: “Flame-street” is an interesting diffusion flame behavior in which a series of flame-segments is separatelyIn the present paper, the dynamic formation process of a methane-oxygen diffusion flame-street structureflame shape/type change from a tribrachial structure in its fast-propagating phase to a long, trailing diffusionMoreover, chemical insights for the premixed and diffusion branches of the leading flame were also provided

Keywords： micro-combustion     flame-street     diffusion flame     mixing layer     flame propagation speed    

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Title Author Date Type Operation

Correlation of chloride diffusion coefficient and microstructure parameters in concrete: A comparative

Yurong ZHANG, Shengxuan XU, Yanhong GAO, Jie GUO, Yinghui CAO, Junzhi ZHANG

Journal Article

Moisture diffusion behavior of permeable fiber-reinforced polymer composite

Jianjiang YANG, Qingsheng YANG, Lianhua MA, Wei LIU,

Journal Article

Influence of initial curing conditions and exposure environments on chloride migration in concrete using electrochemical method

Wen XUE, Weiliang JIN, Hiroshi YOKOTA,

Journal Article

Engineering in Marine Environments of Northern China Based on a Modified Theoretical Model of Chloride Diffusion

Taotao Feng, Hongfa Yu, Yongshan Tan, Haiyan Ma, Mei Xu, Chengjun Yue

Journal Article

A comprehensive assessment on the durability of gas diffusion electrode materials in PEM fuel cell stack

Arunkumar JAYAKUMAR

Journal Article

Coupled diffusion of chloride and other ions in saturated concrete

Nattapong DAMRONGWIRIYANUPAP, Linyuan LI, Yunping XI

Journal Article

Experimental study of humid air reverse diffusion combustion in a turbulent flow field

GE Bing, ZANG Shusheng, GU Xin

Journal Article

Preparation of a Pb loaded gas diffusion electrode and its application to CO

Ang LI, Hua WANG, Jinyu HAN, Li LIU

Journal Article

evaluation of renal function using diffusion weighted imaging and diffusion tensor imaging in type 2

Xiaoyan Chen,Wenxia Xiao,Xinchun Li,Jianxun He,Xiaochun Huang,Yuyu Tan

Journal Article

Magnetohydrodynamic slip flow and diffusion of a reactive solute past a permeable flat plate with suction

Krishnendu BHATTACHARYYA, G. C. LAYEK

Journal Article

Molecular diffusion in ternary poly(vinyl alcohol) solutions

Journal Article

Reaction kinetics and internal diffusion of Zhundong char gasification with CO

Yun Liu, Jiangyuan Qu, Xuehui Wu, Kai Zhang, Yuan Zhang

Journal Article

Chloride diffusion in concrete with carbonated recycled coarse aggregates under biaxial compression

Journal Article

Fuel variability effect on flickering frequency of diffusion flames

Jizhao LI, Yang ZHANG

Journal Article

Transient process of methane-oxygen diffusion flame-street establishment in a microchannel

Journal Article