Issue |
E3S Web Conf.
Volume 418, 2023
African Cities Conference (ACC 2023): A part of African Cities Lab 2023 Summit
|
|
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Article Number | 01005 | |
Number of page(s) | 6 | |
Section | Architecture, Urban Planning Challenges and Development | |
DOI | https://doi.org/10.1051/e3sconf/202341801005 | |
Published online | 18 August 2023 |
Improvement of the energy efficiency of buildings: Thermal characterization of an ecological building material based on industrial cotton waste
1 University of Abomey-Calavi, Laboratory of energetics and applied mechanics, Abomey-Calavi, Benin
2 University of Abomey-Calavi, Pôle Technologique de Promotion des Matériaux Locaux, Abomey-Calavi, Benin
3 University of Liege, Building Energy Monitoring and Simulation, Arlon, Belgium
* Corresponding author: abdou.alakouko@gmail.com
The aim of this work is to study the thermal characteristics of a concrete reinforced with cotton waste fiber for building construction. The concrete used was formulated with the Dreux-Gorisse method and has a compressive strength of 14.13 MPa. The fiber-reinforced concrete contains 0.1% to 0.8% of fibers by mass. The thermal properties were determined by the asymmetric hot plane method used with a DesProTherm device. Other properties were also computed. The results show that the density of the concretes decreases with the percentage of fibers, from 2.205 t/m3 for the concrete without fiber to 2.001 t/m3 for the concrete containing 0.8% of fibers. The thermal conductivity and thermal diffusivity also decrease with the percentage of fibers, they range respectively from 1.021 W/m.K to 0.448 W/m.K and from 5.64 10-7 m²/s to 2.19 10-7 m²/s. As for the thermal capacity, it is almost constant with 0.1% of fibers (1810 to 1800 kJ/m3.K) then increases progressively up to 2046 kJ/m3.K for 0.8% of fiber. These results show that the incorporation of fibres improves the thermal characteristics of concrete. The use of this material would provide better thermal conditions inside the buildings, and consequently the reduction of energy consumption.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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