Hygro-thermal behavior of raw earth concrete

Abstract

International audienceRaw earth materials represent an alternative to the traditional building materials since a lot of time. It is a material available in large quantities, ecological, economic and environmental. This material can be compacted or stabilized by small quantities of binders to improve its mechanical behavior. For its hygro-thermal behavior, several studies have shown that the raw earth is characterized by a very interesting and encouraging temperature-humidity regulating power for comfort and well-being. In this study, we are interested in the hygrothermal characterization of raw earth concrete. Different complementary techniques were used on the one hand for the thermal properties and on the other hand for the water vapor permeability. For the measurement of thermal conductivity, the device KD2 Pro was used to determine. For the measurement of water vapor permeability, the cup method was used (Ferroukhi, 2016; Hibouche, 2013). The results were analyzed and compared with those of traditional building materials which highlighted the interesting hygrothermal behavior of the studied raw earth concrete