Abstract
Asbestos is the common name applied to a group of natural, fibrous silicate minerals, which were once one of the most popular raw materials to be used in building materials. Asbestos was mainly used for the production of assortment asbestos cement products. Today it is generally known that asbestos belongs to the group of hazardous materials and shows carcinogenic activity. It is therefore advisable to attempt to dispose of asbestos minerals in asbestos-containing materials and to convert them into a harmless material. One of methods may be microwave thermal decomposition of asbestos minerals. The research was used for old etemit roof ceiling. X-ray analysis indicated the presence of undesirable chrysotile. Its thermal destruction was carried out in a microwave oven in the power of 2500 W. In case the heating time was 15 min, X-ray analysis was confirmed chrysotile change into harmless minerals. Thermal analysis was used for characterization and the thermal behaviour of the asbestos cement sample.
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