Durability of thermal plasters made with recycled materials

The goal of this research was to evaluate the behavior over time of mortars obtained from three different types of recycled material, and specifically aimed to obtain thermal insulation plasters. The typology of samples was identified based on experimentations conducted at the University of Madrid, with 11 different types of specimens made with cement, river sand, expanded clay (with different particle size), recycled XPS (with different particle size), and recycled ceramic remains. The good results suggested submitting the samples in the laboratory of Building Engineering of the University of Naples Federico II to the following tests: rainfall resistance, thermal shock resistance, accelerated aging resistance in climatic chamber. In the present paper, the final results, with a preliminary assessment of the suitability for use of these mortars with external coating function in determined climatic contexts, are proposed.