title: Function investigation of stone mastic asphalt (SMA) mixture partly containing basic oxygen furnace (BOF) slag.
abstract: OBJECTIVE
  In this paper, the effect of the size gradations of basic oxygen furnace (BOF) slag on the functional performances of stone mastic asphalt (SMA) mixture including skid and deformation resistances was investigated.
  
  
  METHODS
  The industrially produced BOF slag coarse aggregates (BSCA) with size gradations of 4.75-9.5 mm and 9.5-16 mm were used. SMA mixtures were designed according to Marshall procedure. British pendulum number (BPN), indicating the skid resistance of asphalt mixture, was measured by a British pendulum skid resistance device. Flow number (FN) and Marshall quotient (MQ), reflecting the deformation resistance of asphalt mixture, were determined, respectively, based on the results of dynamic creep test and Marshall test (stability and flow value).
  
  
  RESULTS
  Showed that BSCA with a size gradation of 9.5-16 mm performed better in improving the skid and deformation resistance of SMA mixture than BSCA with a size gradation of 4.75-9.5 mm. Furthermore, BSCA with combined size gradations, namely, 4.75-16 mm, worked the best.
  
  
  CONCLUSIONS
  These conclusions would benefit the future extensive utilization of BSCA in asphalt pavement.
authors.affiliation: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan - China.
authors.forename: Zongwu
authors.initials: Z
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan - China.
authors.forename: Shaopeng
authors.initials: S
authors.lastname: Wu
authors.affiliation: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan - China.
authors.forename: Ling
authors.initials: L
authors.lastname: Pang
authors.affiliation: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan - China.
authors.forename: Jun
authors.initials: J
authors.lastname: Xie
mesh_terms: D006838:Hydrocarbons / Q000737:chemistry*
chemical_list: D006838:Hydrocarbons; C006647:asphalt