COMPOSITION COMPRISING BOTTOM ASH, AND USE THEREOF AS SECONDARY RAW MATERIAL

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The present invention relates in general terms to a eomposition comprising bottom ash produced from the incineration of waste, in admixture with an alkali or alkaline earth silicate, and at least one compound selected from among : an alkali or alkaline earth sulphide and/or phosphate, and the use thereof as a secondary raw material, typically in the building sector, for example in the preparation of cement derivatives such as tiles, screeds and the like. When a ferromagnetic material is added to it, the present composition can be particularly useful in the preparation of dedicated paths for blind individuals.