Mechanical, anti-icing and de-icing performance of porous asphalt mixture containing chloride-based particle

Abstract

ABSTRACT So far, chloride-based particles have been extensively used for the improvement of anti-icing performance of dense-graded asphalt pavement. However, its utilisation in the open-graded asphalt mixtures has not been sufficiently qualified. For this reason, this study prepared porous asphalt mixtures (PAM) using two types of chloride-based particles, namely Mafilon (MFL) and Lvxin II (LX II). In what follows, mechanical properties, anti-icing and de-icing performance of PAMs were respectively investigated. Concerning the mechanical properties of PAMs, the uniaxial compression test, Marshall test, rutting test, Cantabro loss test, as well as moisture stability were conducted. Anti-icing performance was estimated by the measurement of conductivity and freezing point for the leaching water of PAMs. Meanwhile, the de-icing performance of PAMs was quantified by the inclined shearing test and melting monitoring. Although the incorporation of MFL or LX II deteriorated the mechanical performance of PAMs to some extent, the results indicated that all mechanical indicators can satisfy the application requirement. Considering significant improvement in anti-icing and de-icing performance, it can be concluded that the use of chloride-based particles in the PAM is promising.