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Influence of the kenaf fiber length on the mechanical and thermal properties of Compressed Earth Blocks (CEB)

Influence of the kenaf fiber length on the mechanical and thermal properties of Compressed Earth... Abstract The association of natural fibers and raw land soil has many advantages (thermal control, sound insulation, mechanical behavior, etc.). However, the major issue with the use of these materials is the lack of knowledge regarding their reliability and durability. In this work, we have evaluated the influence of kenaf fiber length on the mechanical and thermal properties of Compressed Earth Blocks (CEB). Fibers with length 10, 20 or 30 mm were used at mixing rate of 1.2% dry weight of soil; with the aim to enhance the mechanical and thermal properties of CEB fabricated starting from a plastic clayey soil mined in Benin. Analysis of the mechanical behavior of different Soil/Fiber formulations in terms of flexural strength demonstrated the beneficial effect of the fibers. However, the mechanical strength of CEB obtained by immersing fibers till saturation prior to incorporation into the soil greatly diminished. The higher flexural strength was obtained with fibers 30 mm long. The thermal conductivity of CEB decreased when the fiber length was raised. The results showed the real possibility to improve CEB mechanical and thermal properties by using fibers for reinforcement. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "KSCE Journal of Civil Engineering" Springer Journals

Influence of the kenaf fiber length on the mechanical and thermal properties of Compressed Earth Blocks (CEB)

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References (42)

Publisher
Springer Journals
Copyright
2018 Korean Society of Civil Engineers and Springer-Verlag GmbH Germany, part of Springer Nature
ISSN
1226-7988
eISSN
1976-3808
DOI
10.1007/s12205-017-1968-9
Publisher site
See Article on Publisher Site

Abstract

Abstract The association of natural fibers and raw land soil has many advantages (thermal control, sound insulation, mechanical behavior, etc.). However, the major issue with the use of these materials is the lack of knowledge regarding their reliability and durability. In this work, we have evaluated the influence of kenaf fiber length on the mechanical and thermal properties of Compressed Earth Blocks (CEB). Fibers with length 10, 20 or 30 mm were used at mixing rate of 1.2% dry weight of soil; with the aim to enhance the mechanical and thermal properties of CEB fabricated starting from a plastic clayey soil mined in Benin. Analysis of the mechanical behavior of different Soil/Fiber formulations in terms of flexural strength demonstrated the beneficial effect of the fibers. However, the mechanical strength of CEB obtained by immersing fibers till saturation prior to incorporation into the soil greatly diminished. The higher flexural strength was obtained with fibers 30 mm long. The thermal conductivity of CEB decreased when the fiber length was raised. The results showed the real possibility to improve CEB mechanical and thermal properties by using fibers for reinforcement.

Journal

"KSCE Journal of Civil Engineering"Springer Journals

Published: Feb 1, 2018

Keywords: Civil Engineering; Industrial Pollution Prevention; Geotechnical Engineering & Applied Earth Sciences

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