THERMAL AND MECHANICAL BEHAVIOR OF THE PLASTER REINFORCED BY FIBER ALPHA OR GRANULAR CORK

Morocco possesses a 377.482 ha of tree of cork and 3.186.000 ha of fiber alpha which present a big capital of ecological insulating material. Our objective in this work is the development of composites based on plaster, cork and fiber alpha and choosing the best proportion giving the optimum thermal and mechanical properties. The first step consists of thermal characterization using hot plate in transient and permanent regime[1–4] and flash [5– 7] methods in order to determine thermal conductivity, thermal diffusivity and thermal effusivity of the developed composites. The second step consists of analyzing the results of flexure resistance of the two kind of composites and the facials of samples after rupture in order to rule of the best behavior of the two environment granular and fiber. Finally, an analysis of the a dimensional coefficient between the thermal conductivity and resistance of flexure was done to specify the best proportion of insulating materials.