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Quantification of time-dependent moisture distributions in cement-based materials

Author(s): Peng Zhang, Qing Liu, Dan Li, Yanru Wang, Tiejun Zhao
Paper category: Proceedings
Book title: Proceedings on International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Moisture in Materials and Structures
Editor(s): Kurt Kielsgaard Hansen, Carsten Rode and Lars-Olof Nilsson
ISBN: 978-2-35158-178-0
e-ISBN: 978-2-35158-179-7
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 110 - 119
Total Pages: 10
Language : English

Abstract: Water and harmful compounds dissolved in water are taken up into the porous structure of cement-based materials by capillary action and diffusion or a combination thereof. In this contribution it will be shown that neutron radiography is a powerful method to study moisture uptake and movement in porous cement-based materials. This method has been applied to follow the time dependent process of capillary suction quantitatively. In addition, uptake of water in the vicinity of cracks has been studied. It is of interest that movement of water into the interface between steel reinforcement and concrete and into the fracture process zone ahead of a crack tip can be visualized and determined quantitatively. The obtained results will be discussed. Results presented in this contribution will help to understand better deteriorating processes in reinforced concrete structures.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00

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