TITLE:
Valorization of Glass Bottles in the Manufacture of Fired Compressed Earth Bricks (CEB)
AUTHORS:
Talardja Diadi, Youssouf Sawadogo, Brahima Sorgho, Moustapha Sawadogo, Mohamed Seynou, Lamine Zerbo, Philippe Blanchart
KEYWORDS:
Construction, Fired Compressed Earth Bricks (CEB), Laterite, Glass Powder
JOURNAL NAME:
Journal of Minerals and Materials Characterization and Engineering,
Vol.13 No.2,
March
12,
2025
ABSTRACT: The building materials commonly used are energy-intensive, non-ecological, and unsuitable for climatic conditions. For this reason, various research projects have been initiated to develop efficient, appropriate, and accessible building materials. Much of this research focuses on valorizing local materials and available waste. In our study, laterite and bottle glass powder are valorized in the Compressed Earth Bricks (CEB) formulation fired at 750˚C. X-ray fluorescence spectrometry and Attenuated Total Reflectance Fourier Transform Infrared analyzed the chemical composition and chemical bonds. The physicochemical characteristics of the samples, including water absorption and density, were then determined according to standard NF EN 771-1 and ASTM C20-00, respectively. The mechanical analyses of the test pieces were carried out according to standard NF P18-406. Mineralogy of raw materials and the specimens was obtained by X-ray diffraction. Laterite contains significant amounts of 64% kaolinite, 12% hematite, 11% muscovite, 7% goethite, and 5% quartz. Bottle glass powder consists mainly of a glassy phase of amorphous silica and quartz. The 25% glass powder specimens (PV25) had a mechanical strength (11.70 MPa) well over the minimum requirement (4 MPa) for a single plane structure. The thermal performance showed that the 25% amended specimens had a higher thermal conductivity (0.51 W∙m−1∙K−1) than the control specimens (0.44 W∙m−1∙K−1). As for the thermal diffusivity, the fired CEB amended by 25% has a better thermal inertia (0.22 mm2/s compared to 0.33 mm2/s for the control). 25% amended bricks have been shown to offer superior thermal comfort compared to the controls due to their low thermal diffusivity.