Thermal behavior of traditional lightweight gypsum with construction and demolition waste materials

Abstract

The Waste to Resources (W2R) project is designing several new

materials using waste generated in building rehabilitation works

in order to improve energy efficiency. A catalogue of different

building construction materials using CDW is developed focused

on gypsum and cement conglomerates. This paper shows part of

the results obtained in this project related to the thermal behavior

of some of the analyzed gypsum compounds containing: expanded

polystyrene (EPS), extruded polystyrene (XPS), glass waste and

a mixture of glass wool fiber and glass-powder. In addition, a

reference sample was prepared for comparing the results. All

samples were tested with a thermal conductivity analyzer (Model

C-Therm TCi™) obtaining the following thermal properties:

thermal effusivity, thermal conductivity, thermal diffusivity and

heat capacity. Results of reference samples were compared with

those obtained by other authors in previous researches where

other techniques of measurement were used. In addition, a visual

exploration was carried out with a Dino-Lite ™ digital microscope.