Water Absorption and Transport in Clay Bricks

S. Báez; A.J. Peruzzi; B. Galeano

doi:10.4028/www.scientific.net/MSF.1012.227

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HomeMaterials Science ForumMaterials Science Forum Vol. 1012Water Absorption and Transport in Clay Bricks

Water Absorption and Transport in Clay Bricks

Abstract:

Moisture and water transport in clay bricks are essential contributing factors towards brick decay in buildings. Experimental work is reported comparing water absorption and porosity of handmade and solid fired clay bricks from Paraguay. Their respective porosities were estimated by gravimetric test and, their pore distribution, degree of anisotropy and morphology were examined by SEM. Although it was found that both samples have a common composition (XRD), a higher degree of porosity was found in handmade bricks, which also absorb water at a higher rate accelerating the decay process. Experimental data is reported on the exponential kinetics behavior of water absorption similar to the one observed in capillary tubes, but with an additional diffusive process. A phenomenological model is proposed for water absorption in both types of bricks which compared with the standard model of water absorption available in the literature, produces a better representation of the experimental data.

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23rd Brazilian Conference on Materials Science and Engineering

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Periodical:

Materials Science Forum (Volume 1012)

Pages:

227-232

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.1012.227

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Online since:

October 2020

Authors:

S. Báez*, A.J. Peruzzi, B. Galeano

Keywords:

Capillarity, Clay Brick, Diffusion, Porosity, Water Absorption

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