Hygrothermal Features of Laterite Dimension Stones for Sub-Saharan Residential Building Construction

Abdou Lawane, Raffaele Vinai*, Anne Pantet, Jean-Hugues Thomassin, Adamah Messan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The building sector is widely recognized as having a major impact on sustainable development. Both in developed and developing countries, sustainability in buildings approaches are growing. Laterite dimension stone (LDS) is a building material that was traditionally used in sub-Saharan Africa, but its technical features still need to be assessed. This article presents some results of a study focused on the characterization of LDS exploited in Burkina Faso for building purposes. The measured average thermal conductivity is 0.51  W/mK, which increases with water content and evolves with the specific gravity and with porosity. Rock mineral phases (quartz, goethite, hematite, magnetite) are cemented by kaolinite. The porosity of the material is high (30%), with macropores visible on the surface and found in the rock inner structure as well. Results from the hygrothermal monitoring of a pilot building are also presented.
Original languageEnglish
Article number05014002
Number of pages8
JournalASCE Journal of Materials in Civil Engineering
Volume26
Issue number7
Early online date21 Apr 2014
DOIs
Publication statusPublished - Jul 2014

Keywords

  • Construction materials
  • Laboratory tests
  • Masonry
  • Rocks
  • Sustainable development
  • Thermal properties

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