Comparative Analysis of Local Materials Effects on Two Buildings Thermal Behaviours in Sahelian Climate

Abstract:

The present work focuses on the effect of local materials on the energy performance and thermal comfort of residential and tertiary buildings in the Sahelian climate. Within the framework of the CABET project (Construction Alternative à Basse Energie au Tchad), two buildings were built, one in compacted and additivated raw earth bricks, the other in concrete blocks. These two buildings of same dimensions without floor and single-room were instrumented with temperature and relative humidity sensors since 2019. A weather station is used to monitor outdoor condition. By comparing the experimental data, differences in thermal comfort can be estimated. A heat balance was calculated in the two air volumes inside each building: the room and the space between the ceiling and the roof. An improvement in thermal comfort was experienced by the users after the installation of plant mats on the roof of the concrete block building.

• Periodical: Key Engineering Materials (Volume 980)
• Pages: 117-126
• DOI: https://doi.org/10.4028/p-l3tgXQ
• Online since: April 2024
• Authors: Felicité Ronelngar Modjinguem*, Malloum Soultan, Jacques Jay, Michel Querry
• Keywords: Local Building Materials, Plant Insulation, Sahelian Climate, Stabilised Earth Bricks (SEB), Thermal Behaviour of Buildings

References

[1] E. Ouedraogo, O. Coulibaly, A. Ouedraogo and A. Messan, Caractérisation mécanique et thermophysique des blocs de terre comprimée stabilisée au papier (cellulose) et/ou au ciment, Journal of Materials and Engineering Structures 2 (2015) 68-76.

DOI: 10.1007/bf02486410

[2] P. Meukam, A. Noumowe, Y. Jannot and R. Duval, Caractérisation thermophysique et mécanique de briques de terre stabilisées en vue de l'isolation thermique de bâtiment, Materials and Structures / Matériaux et Constructions, Vol. 36, August-September 2003, pp.453-460.

DOI: 10.1007/bf02481525

[3] M.B. Mansour, A. Jelidi, A.S. Cherif, S.B. Jabrallah, Optimizing thermal and mechanical performance of compressed earth blocks (CEB), Construction and Building Materials 104 (2016) 44-51.

DOI: 10.1016/j.conbuildmat.2015.12.024

[4] D. Sow, M.A. Charfadine, S. Gaye, M. Adj, I.K. Cisse, Integration of Agricultural Waste in Local Building Materials for their Exploitation: Application with Rice Straw, Research Journal of Applied Sciences, Engineering and Technology, 2014, pp.3030-3035.

DOI: 10.19026/rjaset.7.638

[5] N. Malanda, P. Louzolo-Kimbembe, Y.D. Tamba-Nsemi, Etude des caractéristiques mécaniques d'une brique en terre stabilisée à l'aide de la mélasse de canne à sucre, Revue du CAMES Sciences Appliquées et de l'Ingénieur, Vol. 2(2), 2017, ISSN 2312-8712

[6] T. Ashoura, A. Korjenicb, S. Korjenicc, W. Wu, Thermal conductivity of unfired earth bricks reinforcedby agricultural wastes with cement and gypsum, Energy and Buildings 104 (2015) 139-146.

DOI: 10.1016/j.enbuild.2015.07.016

[7] T. Chakirou Akanho, F.B. Fanou Z., G.B. Raoul S.A. Loko, S.J. Avamasse, Mechanical characterization of an eco-material: Case of compress earth bloc (CEB) with addition of cotton waste, Int. J. Cur. Tr. Res (2015) 4 (1):109-114.

[8] A. Ali, R. Benelmir, J.L. Tanguier, A.S. Todjibal, Caractéristiques mécaniques de l'argile de Ndjamena stabilisée par la gomme arabique, Afrique Sciences, 2017, pp.330-341.

[9] M.L. Voumbo, A. Wereme, S. Gaye, M. Adj, G. Sissoko, Characterization of the Thermophysical Properties of Kapok, Research Journal of Applied Sciences, Engineering and Technology 2, 2010, pp.143-148.

[10] A.M. Charfadine, M. Barka, A.M. Tahir, M. Soultan, S. Gaye, A.C. Beye, Thermo-Physical Properties of Local Materials used in the Construction of Chad, American Journal of Civil Engineering. Vol. 3, No. 5, 2015, pp.140-149.

DOI: 10.11648/j.ajce.20150305.12

[11] Danso H and Adu S, Characterization of Compressed Earth Blocks Stabilized with Clay Pozzolana, Journal of Civil & Environmental Engineering, 2019, 9:1 DOI: 10.4172/2165- 784X.1000331

[12] P.M. Toure, Y. Dieye, P.M. Gueye, M. Faye,V. Sambou, Influence of envelope thickness and solar absorptivity of a test cell on time lag and decrement factor, Journal of Building Physics, 2019, 1-13.

DOI: 10.1177/1744259119863446