Effect of the Thickness on the Phase Shift and Damping of A Material Based on Rice Husks and Cement

Abstract

In this document, five samples of composite cement-rice-ball materials are made to thicknesses of 7.5; 10; 12; 15 and 20 cm. They are kept in the laboratory (LEMA) for two months. They are subsequently wrapped in glass wool, instrumented and exposed for five days to solar thermal stresses. The analysis of the data processing and the interpretation of the curves show that the increase in thicknesses improves the damping and the phase shift of this material. However, we note an asymptotic limit to this evolution, which shows that beyond a certain value of the thickness these parameters no longer evolve