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Experimental characterization of natural fibre–soil interaction: lessons for earthen construction

Vincenzini, A.; Augarde, C.E.; Gioffre, M.

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Authors

A. Vincenzini

M. Gioffre



Abstract

Earthen construction materials are the subject of renewed interest due to the rising alarm about environmental pollution from the construction industry. Current research efforts are focused on improving the mechanical properties of earthen materials to make them modern and competitive. To increase strength and improve ductility fibres can be added to the soil mixture and if natural fibres are used one achieves stabilisation in an environmentally friendly way. Several previous studies have dealt with the behaviour of this composite material at a macroscopic level and on the general interaction between fibres and soil, but there is little published research on the interfacial mechanical interaction between natural fibre reinforcement and a soil matrix which is key to the former. This paper attempts to fill this gap by presenting and discussing laboratory results from a large campaign of pull-out tests conducted on composite earthen samples. The variables investigated here are the nature of the fibres (i.e. single or collections twisted together) and the use of fibre treatments such as PVA glue and baking soda. In the study both fibre–soil failure and soil-soil failure are investigated and the results lead to conclusions as to appropriate use of fibres to reinforce earthen construction materials.

Citation

Vincenzini, A., Augarde, C., & Gioffre, M. (2021). Experimental characterization of natural fibre–soil interaction: lessons for earthen construction. Materials and Structures, 54, Article 110. https://doi.org/10.1617/s11527-021-01703-z

Journal Article Type Article
Acceptance Date Apr 8, 2021
Online Publication Date May 3, 2021
Publication Date 2021
Deposit Date Sep 14, 2021
Publicly Available Date Sep 14, 2021
Journal Materials and Structures
Print ISSN 1359-5997
Electronic ISSN 1871-6873
Publisher Springer
Peer Reviewed Peer Reviewed
Volume 54
Article Number 110
DOI https://doi.org/10.1617/s11527-021-01703-z

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http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.





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