With the increase of energy price, the retrofitting of existing buildings with innovative insulation materials remains a key issue. Although a variety of insulation materials there is always a need for the development of new materials with improved thermophysical properties and low cost. Inorganic polymer materials are promising from this point of view. They are incombustible combining excellent physical and thermal properties with low production cost and significant environmental benefits. In this work, insulation materials with low density are produced with a low cost process and utilizing two different raw materials an industrial mineral and an industrial waste. In this paper, insulation materials with low density were produced with a low cost process utilizing two different raw materials: an industrial mineral and an industrial waste. The results indicated the potential of the application as insulation materials in the construction sector.
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