This paper presents an analysis of the results of studies that relate to the rational use of waste products from the production of slab insulation based on polyisocyanurate foam (PIR). Its use as a filler for structural and heat-insulating materials based on cement and gypsum binders is considered, optimal compositions for obtaining products that meet the required performance characteristics are described.

Keywords: polyisocyanurate foam, PIR, thermal insulation, production waste, recycling, cement binder, gypsum binder, lightweight concrete

The recycling of industrial waste has always been relevant. In the modern world with the development of technology and the construction industry, it is necessary to find new opportunities for the disposal of industrial waste. One of the disposal options is to obtain synthetic anhydrite. Features of production and the finished product of processing make it difficult to use a binder for housing and civil construction. The study of the process of hardening of anhydrite binder and the properties of the resulting stone allows it to be used in different technologies for the manufacture of various building structures based on this binder.

Keywords: gypsum, anhydrite, synthetic anhydrite, industrial waste.