Environment Effect on the Rutting Resistance of Nano‐SiO₂‐Modified Asphalt Concrete: Temperature and Water

Abstract

Nanoparticles have been widely adopted to improve the high-temperature performance of asphalt binder. However, the influence of moisture on high-temperature performance is not clear. Hence, the water absorption performance of the nano-SiO2-modified asphalt concrete is investigated. Based on this, to further analyze the pavement performance of the nano-SiO2-modified asphalt concrete, the coupled effects of high-temperature, moisture content, and nanoparticles content on the rutting resistance of the nano-SiO2-modified asphalt concrete are tested and revealed in this study. Results show that temperature has the most significant influence on the water absorption performance of the nano-SiO2-modified asphalt concrete. The rutting resistance of the nano-SiO2-modified asphalt concrete decreases as temperature and moisture content increase, especially for the temperature. The dynamic stability at the same temperature condition decreases approximately linearly as moisture content increases. The effect of the nano-SiO2 content is the most nonobvious.

Effect of Nano-Cobalt Oxide on the Rheological Behavior of Asphalt Binder and Mechanical Characteristics of Hot Mix Asphalt

“…Additive incorporation has gained momentum in the past decades with respect to asphalt mixture type, mix design variables, and climatic conditions. Additive use has extended in the last 20 years with the progress in technology and the presentation of novel materials, e.g., nanomaterials and polymeric substances [11][12][13][14][15][16].…”

Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt

“…Among organic modifiers, styrene-butadiene-styrene (SBS) is the most commonly used modifier. SBS-modified asphalt exhibits excellent road performance, as well as adequate high-and low-temperature properties that fulfil the requirements of pavements [ 6 , 7 , 8 , 9 , 10 ]. However, due to the great difference in composition and structure between the SBS modifier and asphalt, it is difficult to form a stable system during blending and they are prone to phase separation during thermal storage [ 11 ].…”