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Construction and Demolition Waste (CDW) creates the largest waste stream in the European Union. They consist of a heterogeneous mix of different components and constitute large amounts of waste which are often hazardous. Although some CDW is sent for recycling after the stripping and the demolishing of the building, a bigger share of the recovered CDW is restricted to low-value applications. It is widely accepted that reliable strategies and innovative technologies need to be developed to increase the share of CDW‑derived materials in new residential constructions while simultaneously minimizing future CDW. Moreover, awareness and understanding the high value of CDW derived materials should be reached to improve building energy efficiency. The aim of the research is to evaluate the level of awareness and attitude towards CDW among Latvian construction companies. It was found out that Latvian construction business community has a positive attitude to waste management activities, and understands its importance in sustainable development

Because of low calcination temperature, magnesia binders are attributed as low-CO2 emission materials that can benefit the environment by reducing the energy consumption of building sector. Portland cement in different areas of construction can be replaced by magnesia binder which do not require autoclave treatment for hardening, it has low thermal conductivity and high strength properties. Magnesium-based materials are characterized by decorativeness and ecological compatibility.The experimental part of this research is based on the preparation of magnesia binders by adding raw materials and calcinated products and caustic magnesia. The aim of this study was to obtain low-CO2 emission and eco-friendly material using local dolomite waste materials, comparing physical, mechanical, thermal properties of magnesium binders.