Visual Determination of Adhesion of Bitum Modified with Defecate with Marble Stone

Abstract

The longevity of asphalt concrete pavements largely depends on the adhesion properties between bitumen and mineral aggregates. The insufficient adhesion of the bitumen to the surface of the unit leads to coating degradation under the influence of moisture, a decrease in strength, and a reduction in service life. Therefore, improving the adhesive properties of bitumen is one of the important issues in the field of road construction. In this article, the adhesion properties of grade 50/70 road bitumen to marble stone material were studied by modifying it with defective mineral powder, which is a sugar refinery waste. During the research, a homogeneous mixture was prepared by adding a certain amount of defecate to the bitumen composition, and visual tests were conducted in accordance with the requirements of GOST 12801. During the test, the degree of bitumen retention on the marble surface was assessed through visual observation.