Prediction of moisture transfer in cement-based materials: Use of a porous network model to access transfer parameters

被引：0

作者：

Abdou Ibro, Mohamed ^{[1
]}

Verdier, Jérôme ^{[1
]}

Geoffroy, Sandrine ^{[1
]}

Cagnon, Hugo ^{[1
]}

Bourbon, Xavier ^{[2
]}

机构：

[1] Université de Toulouse, UPS, INSA, LMDC (Laboratoire Matériaux et Durabilité des Constructions), 135 avenue de Rangueil, Toulouse Cedex 4,F-31077, France

[2] Andra Parc de la Croix Blanche, 1-7 Rue Jean Monnet, Chatenay Malabry Cedex,F-92298, France

来源：

Cement and Concrete Research | 2021年 / 142卷

关键词：

Water vapor - Moisture control;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Knowing the water transport phenomena is fundamental for understanding the durability of cement-based materials. The moisture content within cementitious materials is of primary importance because it has a direct influence on mechanical (shrinkage, creep) and chemical (penetration of aggressive agents) degradation. Many models based on the determination of the transfer properties of the material under study already exist but require fitting of the parameters to find the experimental kinetics. Transfer parameters are generally estimated from the empirical approaches developed for soils by Van Genuchten and the water vapour diffusion reduction factor is often calculated via Millington's semi-empirical model. In this paper, we make a proposal to improve the prediction of moisture transfer, through mechanisms such as drying, capillary imbibition and water vapour permeability in cement-based materials, by using a porous network model to access the transfer parameters. © 2020

引用

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