Jordan Journal of Civil Engineering

Valorization of Posidonia oceanica Balls for the Manufacture of an Insulating and Ecological Material


Malek Jedidi; Anis Abroug;


To combat overconsumption of energy in buildings for residential or industrial use, it’s necessary to use materials that provide good thermal insulation. In this context, an experimental study was carried out to assess the mechanical and thermophysical properties of a mixture of plaster and fibers of Posidonia oceanica. For this purpose, three series of parallelepipedic specimens of dimensions 270 mm x 270 mm x 40 mm and three series of prismatic specimens of dimensions 40 mm x 40 mm x 160 mm were prepared by varying the percentage of fibers from 0% to 20%. Mechanical and physical properties, such as: compressive strength, flexual strength, thermal conductivity and thermal diffusivity, were investigated. Density of different test samples was determined for percentages of fibers ranging from 0% to 20%. The results have shown that fiber-reinforced mixtures have a better resistance to compression and bending. The addition of Posidonia oceanica fibers considerably reduces thermal conductivity and thermal diffusivity of the various mixtures. Optimal mechanical properties are reached when the fibers of Posidonia oceanica represent a percentage ranging from to 10% by volume.


Valorization, Thermal insulation, Posidonia oceanica fibers, Plaster, Ecology