Resilience of a dirt road in Madagascar

The resilience of earthen roads depends on climatic, morphological, geological and geotechnical factors specific to each region. This study focuses on four roads in Madagascar (RN10, RNT23, RN31, RIP84) to assess the ability of soils to withstand natural and anthropogenic stresses. Geotechnical tests were used to identify the characteristics of existing materials and to propose improvements through stabilization (sand, Probase, etc.). The results show that specific mixes can achieve the recommended bearing capacity standards, thus contributing to the durability of earth roads in a tropical context.