Pore Structure Modeling Depending on Pore Diameter and Water Migration in a Microscopic Viewpoint
Publication: Journal of Engineering Mechanics
Volume 145, Issue 2
Abstract
Predicting pore structure is of great importance in concrete because pore properties are essential factors in its durability and structural performance. In this study, a pore structure model, coupled with water migration and hydration of cement and water, was constructed. A diffusion model depending on the pore diameter was also constructed by introducing a different pattern of water movement for each pore size to water migration in a microscopic view. To evaluate the effectiveness of the proposed models, the analytical results were compared with experimental results of the pore size distribution measured by gas adsorption and mercury intrusion methods. Additionally, the experimental and analytical results of water migration were compared to confirm the applicability of the diffusion model. The experimental and simulated results were revealed to be in close agreement, with the simulated results characterizing the pore structures of cement hydrates and water migration.
Get full access to this article
View all available purchase options and get full access to this article.
References
Dan, Y., T. Iyoda, Y. Ohtsuka, Y. Sagawa, and H. Hamada. 2009. “The relationship between curing condition and durability on concrete using blast-furnace slag cement.” J. Mater. Concr. Struct. Pavements 65 (4): 431–441.
Ishida, T., K. Maekawa, T. Kishi, G. Iwata, and C. Kusuhara. 2005. “Enhanced modeling of moisture equilibrium and transport in cementitious materials under arbitrary temperature and relative humidity history.” J. Struct. Mech. Earthquake Eng. 68 (795): 39–53. https://doi.org/10.2208/jscej.2005.795_39.
Juenger, M. C. G., and H. M. Jennings. 2001. “The use of nitrogen adsorption to assess the microstructure of cement paste.” Cem. Concr. Res. 31 (6): 883–892. https://doi.org/10.1016/S0008-8846(01)00493-8.
Kondo, S., T. Ishikawa, and I. Abe. 2001. The science of adsorption. 2nd ed. Tokyo: Maruzen.
Langmuir, I. 1916. “The constitution and fundamental properties of solids and liquids. Part I.” J. Am. Chem. Soc. 38 (11): 2221–2295. https://doi.org/10.1021/ja02268a002.
Suda, Y., S. Tsuchida, and T. Saeki. 2011. “Study on specific surface area of hydration products in hardened cement paste.” Cem. Sci. Concr. Technol. 65 (1): 103–110. https://doi.org/10.14250/cement.65.103.
Takahashi, N., and H. Oshita. 2015. “Study on the modeling of microscopic water migration depending on the C/S ratio and volumetric changes.” In Proc., 10th Int. Conf. on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures. Switzerland: RILEM.
Tsukahara, T., W. Mizutani, K. Mawatari, and T. Kitamori. 2009. “NMR studies of structure and dynamics of liquid molecules confined in extended nanospaces.” J. Phys. Chem. B 113 (31): 10808–10816. https://doi.org/10.1021/jp903275t.
Tsukahara, T., K. Morikawa, K. Mawatari, and T. Kitamori. 2015. “Structure and dynamics of water and non-aqueous solvents confined in extended nanospaces characterized by NMR spectroscopy.” Jpn. Soc. Anal. Chem. 64 (4): 261–271. https://doi.org/10.2116/bunsekikagaku.64.261.
Uchiumi, H. 2008. “Water adsorption isotherm of cement materials.” J. Mater. Concr. Struct. Pavements 64 (4): 560–571. https://doi.org/10.2208/jsceje.64.560.
Xi, Y., Z. P. Bazant, and H. M. Jennings. 1994. “Moisture diffusion in cementitious materials adsorption isotherms.” Adv. Cem. Based Mater. 1 (6): 248–257. https://doi.org/10.1016/1065-7355(94)90033-7.
Information & Authors
Information
Published In
Copyright
©2018 American Society of Civil Engineers.
History
Received: Aug 8, 2018
Accepted: Aug 8, 2018
Published online: Nov 30, 2018
Published in print: Feb 1, 2019
Discussion open until: Apr 30, 2019
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.