Utilization of Waste Incineration Bottom Ash as Fine Aggregate in the Production of Terrazzo Tiles for Pavement

Turning solid waste materials into useful construction materials has been attracted many researchers in the world. This study investigated the possibility of using waste incineration bottom ash (IBA) from local incineration plants in the production of terrazzo tiles for pavement. In which, the IBA was used as a crushed sand substitution at levels of 0–100 vol.% (interval of 25%). Test results show that all of the terrazzo tiles produced in this investigation exhibited consistent dimensions and nice shapes without visible defects. The incorporation of IBA reduced the flexural, whereas increased the surface water absorption and surface abrasion values of the tiles. However, all of the terrazzo tiles regardless of the IBA content met the requirements of TCVN 7744:2013 and were classified as Type-I, which is the highest quality of terrazzo tiles for external use. Moreover, scanning electron micrographs of the tiles well supported their engineering properties. Research results further demonstrated great potential in manufacturing terrazzo tiles using IBA as a fine aggregate.