Study of the effect of elevated temperatures on selected properties of concrete with the addition of ceramic cullet in terms of its durability

The article presents the results of tests of concretes based on natural aggregate and recycled ceramic aggregate (ceramic sanitary aggregate). Two types of recycled aggregates were used: FFC – ceramic aggregate without fireclay and VC – ceramic aggregate with fireclay). The recipe composition for the reference mixture was designed experimentally, assuming a w/c = 0,5 and plastic consistency. In the next stage of the research, 30% and 60% of the natural aggregate was replaced with recycled ceramic aggregate and the obtained results were analyzed. Water absorption, compressive strength and compressive strength after calcining were tested (max. temperature 750C)