Abstract
Budun Rock Asphalt (BRA) is used to modify the neat asphalt binder in this study. To investigate the effectiveness of the underlying modifier, comprehensive experiments are conducted with a variety of blending ratios between the modifier and neat binder. These laboratory tests mainly include fundamental properties of binders, such as physical characteristics and workability. Furthermore, performance-based tests of asphalt mixture are highlighted in the study and show that the overall performance of an asphalt mixture containing BRA modifier increases with the increase of the modifier percentage/dosage to certain level. When the dosage of natural BRA reaches approximately 45%, the optimal performance, in terms of rutting and water resistance capability and low-temperature properties, can be achieved. In addition, by comparison, a cost study is conducted, which indicates that the BRA modified asphalt is significantly more economic than its counterparts, such as Styrene-Butadiene-Styrene (SBS) modified asphalt.
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More From: International journal of pavement research and technology
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