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Title: Water transport between mortar and brick: the influence of material parameters
Authors: Hendrickx, Roel
Roels, Staf
Van Balen, Koen
Issue Date: 2012
Publisher: Springer
Series Title: RILEM Bookseries vol:7
Host Document: Historic Mortars: characteriasation, assessment and repair edition:1 pages:329-341
Abstract: This article deals with the phenomenon of the early water transport between fresh mortar and a dry brick. Two bricks with different transport parameters were considered in combination with two different mortars: a lime hydrate mortar and a cement mortar. Water transport was monitored during the first hour after contact using X-ray imaging and simulated using a commercial control volume (CVM)software tool. Such simulations are made possible by a newly developed method to measure transport parameters of fresh mortars. The amount of water leaving the mortar in 1 h depends mostly on two parameters of the mortar: initial and residual water content. The rate of fl ow across the interface shows a complex behaviour and is larger for cement mortar and for strongly absorbing brick. The accuracy of simulations is somewhat limited by the importance of over-capillary effects in the bricks near the interface. It appears that this over-capillary water is partly distributed over the brick, and partly reabsorbed by the mortar.
ISBN: 978-94-007-4634-3
978-94-007-4635-0
ISSN: 2211-0844
2211-0852
Publication status: published
KU Leuven publication type: IHb
Appears in Collections:Building Materials and Building Technology Section
Building Physics Section

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