Application of Bio-Modified Montmorillonite Clay to Enhance Asphalt Oxidation Resistance

Abstract

This study evaluates the effectiveness of using a Bio-modified Nanoclay additive (BNC) to reduce the oxidative aging of asphalt pavements. The study results through X-Ray Diffraction analysis showed that the modification of montmorillonite clay with bio-modifier increased the basal d-spacing of clay. The resulting nanoclay with increased interlayer spacing was chosen for application in asphalt binder. Rheological characterization of clay-modified asphalt binder were studied before and after oxidation aging. The effects of BNC on asphalt complex modulus were observed to be prevailing in the intermediate to high-temperature range. The aging resistance of asphalt binder showed improvement with the addition of nanoclay and the improvement was more notable in presence of bio modified-nanoclay than pure clay.

Investigating Effects of Nano/SBR Polymer on Rutting Performance of Binder and Asphalt Mixture

“…Modifying bitumen with additives is usually applied to change phase combination and to improve the mechanical properties of the asphalt mixture [5,13]. On the contrary, nanoparticles are among the known additives used for the modification of bitumen features [14][15][16]. Nanoclays are unique materials used as additives to make nanocomposites and to considerably improve the properties of polymeric materials.…”