Analysis of the water absorption test to assess the intrinsic permeability of earthen materials

Antonin  Fabbri; Lucile Soudani; Fionn McGregor; Jean-Claude Morel

doi:10.1016/j.conbuildmat.2018.12.014

Analysis of the water absorption test to assess the intrinsic permeability of earthen materials

Antonin Fabbri, Lucile Soudani, Fionn McGregor, Jean-Claude Morel

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Abstract

The use and development of earth as a building material is notably constrained by its specific thermal and mechanical behaviours in relation to water, currently not considered in construction norms and technical guides. As the compressive strength decreases with the presence of water in pores, a good prediction of water content evolution within earthen walls is critical to ensure safety. The key parameter driving the flow of liquid water through the material is the intrinsic permeability. In this paper, a novel analysis of the water absorption test is developed, enabling thereby the identification of the intrinsic permeability. Through the comparison with permeability measurements made with an oedometer at a variable hydraulic load for samples with different dry densities, this new method could be validated. This work gives therefore the opportunity to use simple standard absorption tests to assess the intrinsic permeability of earthen materials.

Original language	English
Pages (from-to)	154-162
Number of pages	9
Journal	Construction and Building Materials
Volume	199
Early online date	12 Dec 2018
DOIs	https://doi.org/10.1016/j.conbuildmat.2018.12.014
Publication status	Published - 28 Feb 2019

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Construction and Building Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Construction and Building Materials, [199], (2019) DOI: 10.1016/j.conbuildmat.2018.12.014

© 2018, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

Keywords

Compressed earth block
Earthen construction materials
Intrinsic permeability
Rammed earth
Rising damps

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science

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10.1016/j.conbuildmat.2018.12.014

Post-PrintAccepted author manuscript, 1.83 MBLicence: CC BY-NC-ND

Cite this

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title = "Analysis of the water absorption test to assess the intrinsic permeability of earthen materials ",

abstract = "The use and development of earth as a building material is notably constrained by its specific thermal and mechanical behaviours in relation to water, currently not considered in construction norms and technical guides. As the compressive strength decreases with the presence of water in pores, a good prediction of water content evolution within earthen walls is critical to ensure safety. The key parameter driving the flow of liquid water through the material is the intrinsic permeability. In this paper, a novel analysis of the water absorption test is developed, enabling thereby the identification of the intrinsic permeability. Through the comparison with permeability measurements made with an oedometer at a variable hydraulic load for samples with different dry densities, this new method could be validated. This work gives therefore the opportunity to use simple standard absorption tests to assess the intrinsic permeability of earthen materials.",

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Analysis of the water absorption test to assess the intrinsic permeability of earthen materials

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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