In order to preserve natural resources, the use of waste and alternative materials in the construction and maintenance of roads is\nincreasingly investigated. .is paper presents the results of testing wearing course asphalt mixtures (AC 11s SURF 50/70) made\nwith various percentages of fly ash, used as a partial or complete substitute for mineral filler. .e properties of fly ash were\ndetermined to assess their suitability for use in asphalt mixtures. .e experimental research was performed on asphalt samples\ncontaining fly ash from three different sources, with 25%, 50%, 75%, and 100% of mineral filler substitution. .e control mixture\nwas prepared with 100% of mineral filler. .e paper presents the volumetric composition, stability, and flow of asphalt mixtures\ntested on standard Marshallâ??s samples, water sensitivity, and resistance to permanent deformation. .e results of this study\nindicate that a satisfactory volumetric composition can be achieved by adding fly ash, while the bulk density and voids of the\nmineral and asphalt mixture generally depend on the type of fly ash and its content. .e stability and flow of mixtures with fly ash\nare favourable compared with the control mixture. .e water sensitivity of mixtures with fly ash is generally lower compared with\nthe control mixture and depends on the type and percentage of fly ash. .e resistance to permanent deformation of the asphalt\nmixtures depends on the fly ash type and percentage. .e results obtained in this study are an important step towards broader\nimplementation of fly ash in asphalt mixtures.
Loading....