Use of bottom ash in the production of ceramic brick

Abstract

The influence of the addition of ash residues from the processing of solid household waste from the Balakhani Industrial Zone in Baku on the properties of ceramic bricks in the Khirdalan and Karadag regions of Azerbaijan was studied. Ash residues were added in the amount of 10-50% of the mass. The physical properties of ash residues were studied - fractional, granulometric, radiological and toxicological compositions, as well as water absorption of ash bricks at different firing temperatures. The positive role of waste for obtaining wall ceramics with high performance properties was revealed, which corresponds to the regulatory requirements of GOST. It should be noted that the introduction of mineral additives has a positive effect on the characteristics of the ash brick. Among other ash-containing bricks at firing temperatures of 900 and 1100, the highest strength (22 MPa) is observed at 1100 °C with an ash content of up to 10%. As the ash content increases, the compressive strength at 900 °C and 1100 °C decreases.