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Characterization N’Gouri Diatomite Thermomechanical
Civil Engineering Department, National School of Public Works (ENSTP), N’Djamena, Chad
Geotechnics Department, Engineering Sciences UFR, Iba Der Thiam University, Thiès, Senegal
Civil Engineering Department, University of Abomey Calavi, Cotonou, Benin
Civil Engineering Department, National School of Public Works (ENSTP), N’Djamena, Chad
Civil Engineering Department, National School of Public Works (ENSTP), N’Djamena, Chad
Civil Engineering Department, National School of Public Works (ENSTP), N’Djamena, Chad
Geotechnics Department, Engineering Sciences UFR, Iba Der Thiam University, Thiès, Senegal
Civil Engineering Department, University of Abomey Calavi, Cotonou, Benin
- 1 Civil Engineering Department, National School of Public Works (ENSTP), N’Djamena, Chad
- 2 Geotechnics Department, Engineering Sciences UFR, Iba Der Thiam University, Thiès, Senegal
- 3 Civil Engineering Department, University of Abomey Calavi, Cotonou, Benin
- 4 Civil Engineering Department, National School of Public Works (ENSTP), N’Djamena, Chad
- 5 Civil Engineering Department, National School of Public Works (ENSTP), N’Djamena, Chad
- 6 Civil Engineering Department, National School of Public Works (ENSTP), N’Djamena, Chad
- 7 Geotechnics Department, Engineering Sciences UFR, Iba Der Thiam University, Thiès, Senegal
- 8 Civil Engineering Department, University of Abomey Calavi, Cotonou, Benin
Open Journal of Civil Engineering·Volume 15 (2025)·Pages 728–740·Published 30 September 2025·DOI10.4236/ojce.2025.154039
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Abstract
N’Gouri diatomite, located in the Lake Chad Basin, is a silica-rich sedimentary material (>80%) characterized by high porosity and fine grain size. Three facies were studied (samples 44, D and M) to evaluate their potential in the production of local construction materials. Analyses show a low dry density (409 - 414 kg/m 3 ), a stable specific gravity (671 - 679), a moderate water content (7.87% - 8.75%) and a high porosity (38.3% - 39.76%). Compressive strength varies according to the forming methods: Rc ≈ 2.7 - 2.9 MPa for 44, Rc ≈ 2.0 MPa for D and Rc ≈ 1.6 - 1.8 MPa for M, while thermal conductivity remains low (0.15 - 0.20 W/m·K), confirming the insulating potential of the material. Comparison between manual and vibrocompaction methods shows a reduction in porosity and densification of the material, with varied effects on mechanical strength. These characteristics make N’Gouri diatomite an interesting candidate for the production of lightweight and insulating bricks adapted to local conditions.
KeywordsDiatomiteN’GouriEco MaterialsPhysicsThermomechanics
- Issiakou, M.S. (2016) Caractérisation et valorisation des matérieux latéritiques utilisés en construction routière au Niger. Master’s Thesis, Université de Bordeaux.
- Magrin, G., Lemoalle, J. and Pourtier, R. (2005) Atlas du lac Tchad. Passages.
- Vizinet, J. and De Reviers, B. (1995) Les utilisations des diatomées. Vie et Milieu / Life & Environment , 45, 301-314.
- Fraine, Y. and Seladji, C. (2018) La Diatomite Algérienne un Matériau d’Isolation Hygrothermique Ecologique pour l’Habitat. National Congress on Energy and Materials ( CNEM ), Naâma, 17-18 December 2018.
- Pestre, T. (2021) La pierre naturelle dans un contexte d’évolution réglementaire envi-ronnementale de la construction, étude des transferts hygrothermiques au sein de composants d’enveloppes de bâtiments. Master’s Thesis, Université d’Artois.
- K. Boubendira, L. Kotbia, S. Benayache, H. Meradi, and F. Aouadja, (2015) Etude des propriétés, structurales, thermiques de cao et SiO 2 dans la diatomite. http://dspace.univ-ouargla.dz/jspui/handle/123456789/11981
- Zhu, X., Zhang, M., Shi, J., Weng, Y., Yalçınkaya, Ç. and Šavija, B. (2024) Improving Mechanical Properties and Sustainability of High-Strength Engineered Cementitious Composites (ECC) Using Diatomite. Materials and Structures , 57, Article No. 11. https://doi.org/10.1617/s11527-023-02283-w
- Zheng, J.Y., Chen, Z.Q. and Zhang, M.X. (2014) Hygrothermal Performance of Diatomite-Based Humidity Control Building Material. 6 th International Conference on Energy and Environment of Residential Buildings ( ICEERB 2014), 37. https://doi.org/10.1049/cp.2014.1625
- Hu, Z., Wen, X., Zheng, S., Yin, J., Shen, X. and Zhang, T. (2024) Regulating Pore Structure of Diatomite with Alkali Dissolution and Its Influence on Humidity Control Performance. Ceramics International , 50, 42322-42332. https://doi.org/10.1016/j.ceramint.2024.08.077
- Guillaud, H., Doat, P., Rollet, P., Houben, H., Garnier, P., Fontaine, L., et al. (2008) Technologie de construction et architecture de terre. Proposition de directions prioritaires de recherche pour la République de Corée: Rapport final (Volume 1/2). CRAterre. Université Nationale de Mokpo. Chaire UNESCO Architecture de terre.
- Allahou, A.A., Déthié, S., Sidick, D.K.V.B., Ali, A., Correa, A.I., et al. (2025) Physicomechanical Characterization of Lake Chad Diatomite. American Journal of Civil Engineering and Architecture , 13, 73-79.