Recycling Polyurethane Foam and Its Use as Filler in Renovation Mortar with Thermal Insulating Effect

• Published in: Industrial and Technological Applications of Transport in Porous Materials Vol. 36; pp. 141 - 170
• Main Authors: Václavík, V, Dirner, V, Harničárová, M, Valíček, J, Bendová, M, Daxner, J, Kušnerová, M, Koštial, P, Dvorský, T
• Format: Reference Book Chapter
• Language: English
• Published: Germany Springer Berlin / Heidelberg 2013; Springer Berlin Heidelberg
• Series: Advanced Structured Materials
• Subjects: Application; Building construction & materials; Engineering thermodynamics; Filler; Physical and mechanical properties; Polyurethane foam; Polyurethanes; Porous materials; Recycling; Renovation mortar with thermal insulating effect; Testing of materials; Transport theory
• ISBN: 3642432573; 9783642432576; 9783642374685; 3642374689
• ISSN: 1869-8433; 1869-8441
• DOI: 10.1007/978-3-642-37469-2_6

Renovation mortars with thermal insulating effect are characterized by thermal conductivity λ, within the range from 0.060 to 0.200 W·m−2·K−1. To achieve such low values of thermal conductivity coefficient of composite mortar, it is essential that the structure of this composite contains a sufficient percentage of pores filled with air and has a low volume weight. Lightweight fillers, mostly crushed or crumbled polystyrene, expanded clays, expanded obsidian or volcanic glasses, for example perlite or vermiculite, are used to achieve this effect. The article presents the results of the basic research, where polyurethane foam at the end of its life cycle, in the form of crushed polyurethane with a maximum grain size of 4 mm, is used as new filler for renovation mortars with thermal insulating effect. It describes the current methods of recycling polyurethane foam, the physical and mechanical properties of experimental mixtures of renovation mortar with thermal insulating effect and the method of its application to masonry. This is a new way of utilization of polyurethane foam at the end of its life cycle in the segment of renovation mortars with thermal insulating effect.