The main objective of this experimental research was to investigate the effect of slate waste powder (SWP) as filler material in hot mix asphalt concrete. In the study, the use of slate collected during the shaping process of slate blocks in bituminous hot mixtures as mineral filler was investigated. For this purpose, four different serial asphalt concrete samples were produced using limestone (LS) in different proportions (4%, 5%, 6%, and 7%) as mineral filler. In this context, specimens were produced and tested under Marshall Stability (MS) Test, and the optimum bitumen content (OBC) value for the aggregate samples to be used was determined. Choosing the series of asphalt having 5% filler which has given the highest stability SWP was changed with LS filler in the rate of 25%, 50%, 75%, and 100%. After that MS and Indirect Tensile Strength (ITS) tests, comparatively was conducted on the produced samples and the results were evaluated. As a result, it has come in view that SWP can be used as mineral filler in bituminous mixtures.
Key Words: Asphalt concrete, Slate, asphalt mixture, hot-mix asphal
