Search

Fly ash is a well utilizable secondary raw material for the production of alkali activated construction materials. It is a significant alumina-silicates source suitable for the chemical reaction resulting in hardened composites. Physical and chemical properties of fly ashes as a co-product of coal burning mainly depend on characteristics of coal, burning temperature and combustion conditions. High variability of the properties of fly ash causes an uncertainty in the properties of alkali activated mortars. Time behaviour of the composition of the fly ash produced in a heating plant located in Košice, Slovakia as well as leaching behaviour of both alumina and silica from particular batches during one-year period was documented. Leaching tests were carried out using the distilled water and alkali solutions with three different concentrations. Both compressive and tensile strengths of alkali activated mortars were measured, and the correlation between the mechanical properties of hardened mortars and the chemical composition of fly ashes as well as their leaching characteristics was investigated.

The aim of this contribution is to provide the basic information concerning the course “Management of the Quality of Teaching at Universities”. This course was prepared within the framework of the operational programme Education “Package of Innovative Elements for the Transformation of Education at TUKE” (code ITMS 26110230018). In recent weeks we finished the implementation of the pilot course that was focused to the development of professional skills of teachers and to the enhancement of quality education at TUKE (Technical University of Kosice).