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Advances in Modelling of Heat and Mass Transfer in Porous Materials

Giorgio Pia, Jianchao Cai, Zhien Zhang, Shimin Liu
2019 Advances in Materials Science and Engineering  
, the investigation of transport phenomena in porous materials has emerged as a distinct field of study.  ...  Zhu et al. proposed a paper titled "Entire Process Simulation of Corrosion due to the Ingress of Chloride Ions and CO 2 in Concrete" and studied a comprehensive mathematical model capable of simulating  ...  also wish to thank the anonymous reviewers for their careful reading of the manuscripts submitted to this special issue collection and their several insightful comments and suggestions.  ... 
doi:10.1155/2019/7089718 fatcat:uurt6chrrnbdnogupq4mven32u

Preface to ``The Mathematics of Concrete"

Adrian Muntean, Toyohiko Aiki
2014 Networks and Heterogeneous Media  
Kumazaki prove the Uniqueness of solutions to a mathematical model describing moisture transport in concrete materials.  ...  arising in the context of concrete carbonation is investigated by N.  ... 
doi:10.3934/nhm.2014.9.4i fatcat:aw3v4j7sqjbcfos3scr3i2nxpu

Influence of Wind Pressure on the Carbonation of Concrete

Dujian Zou, Tiejun Liu, Chengcheng Du, Jun Teng
2015 Materials  
However, the mass transfer of carbon dioxide in porous concrete includes molecular diffusion and convection mass transfer.  ...  Many mathematical/numerical models of the carbonation process, primarily diffusion-reaction models, have been established to predict the carbonation depth.  ...  New Century Excellent Talents in University (Grant NO.  ... 
doi:10.3390/ma8084652 pmid:28793462 pmcid:PMC5455509 fatcat:isqbd6p42vhvhowxb5p4hcuqxi

Two-Dimensional Mathematical Model of Carbon Dioxide (CO2) Transport in Concrete Carbonation Proses

Muhammad Nur -Hidayat, Jeffry Kusuma, Naimah Aris
2021 Jurnal Matematika Statistika dan Komputasi  
A new two-dimensional mathematical model was developed to describe the transport phenomena of carbon dioxide in concrete structures.  ...  The numerical results are presented to illustrate the practical application of this model.  ...  Based on physio-chemical mechanisms, Zhang [7] proposed a mathematical model of carbonation process in porous concrete materials.  ... 
doi:10.20956/j.v17i3.12227 fatcat:yfvjlceyovhv7g263zrd5b5rgi

Concrete Durability and Steel Corrosion

Seung-Jun Kwon, Han-Seung Lee, Behrouz Shafei, Yuyin Wang, Velu Saraswathy
2016 Advances in Materials Science and Engineering  
Acknowledgments The lead guest editor appreciates the guest editors and the reviewers who make a great effort from selection of topic to reviewing process in the schedule.  ...  with Inhibitor"), investigation of influencing parameters to carbonation ("Estimation of effect on chloride behavior in concrete as porous media ("Simulation of Chloride Diffusion in Cracked Concrete  ...  Carbonation and Chloride Ion Ingress: Durability of Silica Fume Concrete in Severe Environments"), and chloride behavior evaluation in concrete with various supplementary materials ("Diffusion Decay Coefficient  ... 
doi:10.1155/2016/3658208 fatcat:hisbzncxija3dk3gerxv2ft5jm

Carbonic Gas Randomness Effect on Reinforced Concrete Carbonation

Azhar Badaoui, M'hammed Badaoui, Fattoum Kharchi
2012 Engineering  
This paper deals the randomness effect of the pressure of carbonic gas on the carbonation phenomenon of the reinforced concrete.  ...  This analysis concentrates on the evaluation of carbonation depth (X c ) and the carbonation time (T 1 ) which is the time necessary so that the face of carbonation arrives until the reinforcement from  ...  Several authors have proposed deterministic mathematical models of carbonation: Van Balen and Van Gemert model, based on the mathematical formulation of carbonation and taking into account the effects  ... 
doi:10.4236/eng.2012.41002 fatcat:slqyx5g7tfgurlkim54fdxb6ay

PREDICTION OF SERVICE LIFE OF STRUCTURES CONTAIN METAKAOLIN CONCRETE

2021 International journal of engineering sciences & research technology  
This paper presents a specific case study for estimating the service life of structures contains Metakaolin concrete using the SA.Du2020 model.  ...  The case in consideration was applied to the data collected for a mix contains 15% Metakaolin. The physical and chemical features of metakaolin Concrete will be examined.  ...  Mathematical models In this study, two mathematical models were used to observe the statistical behaviour of the time to crack the concrete.  ... 
doi:10.29121/ijesrt.v10.i2.2021.3 fatcat:6ovyaxm7trcbnfkd7xaek2djqu

Probabilistic Analysis of Reinforced Concrete Carbonation Depth

Azhar Badaoui, M'hammed Badaoui, Fattoum Kharchi
2013 Materials Sciences and Applications  
Concrete carbonation relates to the diffusion of CO 2 in the atmosphere through the concrete pores and to the dissolution of the hydrates.  ...  A great deal of uncertainty still remains in this subject as a result of the random nature of the infiltration of these aggressive agents as well as the material and structural properties of reinforced  ...  These parameters are independent of the study material and are estimated carbonation test.  ... 
doi:10.4236/msa.2013.43a025 fatcat:ueurbjfw2ffvriys7j6abi6gw4

Page 1108 of American Society of Civil Engineers. Collected Journals Vol. 124, Issue 10 [page]

1998 American Society of Civil Engineers. Collected Journals  
“The carbonation of concrete and the mechanism of moisture, heat and carbon dioxide flow through porous materials.’’ Cement and Concrete Res., 23(4), 761— 772.  ...  “Reliability analysis of concrete structures. Numerical and experimental studies.’’  ... 

Experimental and Numerical Studies of Gas Permeability through Orthogonal Networks for Isotropic Porous Material

Grzegorz Wałowski
2021 Materials  
As part of experimental tests of gas permeability through porous material in the form of polyamide, the numerical simulation method was used, using the k–ε turbulence model.  ...  The analysis of hydrodynamic phenomena occurring in the porous material made it possible to confront experimental research with numerical calculations.  ...  For example, in the mathematical model of decarbonation of a ball-shaped sample made of Hills calcium carbonate [44] , it assumes that carbon dioxide flow follows Knudsen's diffusion principles [45,  ... 
doi:10.3390/ma14143832 fatcat:3ldf6tl3wngpnnkm72eyndobmi

Towards Practical Carbonation Prediction and Modelling for Service Life Design of Reinforced Concrete Structures

O S Ekolu
2015 IOP Conference Series: Materials Science and Engineering  
While much scientific understanding has been gained from the numerous carbonation studies undertaken over the past years, it is still presently not possible to accurately predict carbonation and apply  ...  Based on critical literature and some experience of the author, it is found that there still exist major challenges in establishing a mathematical constitutive relation for realistic carbonation prediction  ...  References [1] Parrot, L.J. 1987, A review of carbonation in reinforced concrete. Cement and Concrete Association, BRE, 42p  ... 
doi:10.1088/1757-899x/96/1/012065 fatcat:bmd4vusyjza7dpgdg4exz3ks4m

A two-scale modelling approach to reaction–diffusion processes in porous materials

S.A. Meier, M.A. Peter, M. Böhm
2007 Computational materials science  
A two-scale model for a reaction-diffusion process in a porous material is developed and applied to a simplified problem related to concrete carbonation.  ...  The problem exhibits two different spatial scales due to the great difference in diffusivities of the gas in air and water and the fine pore geometry.  ...  Acknowledgements The second author wishes to acknowledge the financial support of the German National Academic Foundation.  ... 
doi:10.1016/j.commatsci.2006.02.017 fatcat:lmk2wyy7kna2xomkztjrizaw5q

Numerical model for evaluation of the effects of carbon deposition on the performance of 1 kW SOFC stack – a proposal

Konrad Motylinski, Yevgeniy Naumovich, W. Suwała, M. Dudek, J. Leszczyński, S. Łopata
2017 E3S Web of Conferences  
The presence of carbon-containing compounds in the fuel might result in the formation and of carbon in a form of a thin layer on the SOFC anode.  ...  The presented results cover a first stage of the analysis of the carbon deposition processes in SOFCs, focusing mainly on the numerical study of the changes of the fuel cell performance due to degradation  ...  The first aspect concerns studying the influence of anode porous material type on the carbon deposition process [7] .  ... 
doi:10.1051/e3sconf/20171401043 fatcat:jnkfmqvxdre33d3txnek5twtiu

Coupled chemical and mechanical processes in concrete structures with respect to aging

Friedhelm Cramer, Ursula Kowalsky, Dieter Dinkler
2014 Coupled systems mechanics  
In two case studies the aging of concrete due to hydration and chloride penetration are presented, which illustrate the capabilities and the characteristics of the developed model.  ...  Therefore, in the framework of continuous porous media mechanics a model is developed, which allows a detailed analysis of the most important aging processes of concrete as well as a flexible coupling  ...  Applications of the model to durability analysis of concrete under chloride and carbonate attack indicate, that the consideration of the load history and therefore changes in material structure and material  ... 
doi:10.12989/csm.2014.3.1.053 fatcat:3tqzlpgx7ba63fayrsaiprn4xm

Interface conditions for fast-reaction fronts in wet porous mineral materials: the case of concrete carbonation

A. Muntean, M. Böhm
2009 Journal of Engineering Mathematics  
Some modeling and simulation aspects of using kinetic free-boundary conditions to drive fast carbonation reaction fronts into unsaturated porous cement-based materials are discussed.  ...  New models are formulated and validated by means of numerical simulations and experimental data.  ...  Open Access This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided  ... 
doi:10.1007/s10665-009-9295-x fatcat:x7ui3kaz7ncqpaag4vxpp3eeze
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