In this paper, we present the mechanical and thermal proprieties of a new eco-material made from date palm fiber and lime. By its composition, the new material is biodegradable and therefore reduces environmental impact. Also given the availability of palm date fiber in large quantities and lime at low prices in the countries of North Africa, the implementation of an effective insulation material based on such components will have an interesting impact on building industry.

The confectioned material is a light concrete which can ensure both thermal and acoustic insulation. For preparing this material, we were inspired by the techniques used for the production of hemp-concrete. This last is widely used especially in Europe for the thermal insulation of buildings. The analysis carried out shows that this bio-composite: has a good thermal insulation properties and acceptable mechanical resistance. The thermal conductivity and specific heat capacity are sensitive to the variation of the composition ratio (fibers/lime) and the compaction of the material during its manufacturing process.