Performance evaluation of asphalt concrete test road partially paved with industrial waste – Basic oxygen furnace slag

• The properties of basic oxygen furnace (BOF) slag are superior to natural aggregate.
• The rutting resistance of BOF slag asphalt concrete (AC) surpasses conventional AC.
• The pavement service performance of BOF slag AC surpasses that of conventional AC.

In this paper, the analysis results of test roads constructed using conventional asphalt concrete (AC) and test roads constructed using basic oxygen furnace (BOF) slag AC are compared. Various lab tests, such as the Marshall test and measurements of the indirect tensile strength and resilient modulus, were performed; in situ tests measuring rutting, flatness, and skid resistance were also performed. The performances of both BOF slag and conventional AC showed minor differences after half of a year of service. However, the performance of conventional AC was worse than that of BOF slag AC after 2 years of service. These findings suggest that BOF slag AC pavement can effectively extend the service life of roads.