Micro-mechanical investigation of the effect of fine content on mechanical behavior of gap graded granular materials using DEMHabib Taha, Ngoc-Son Nguyen, Didier Marot, Abbas Hijazi and Khalil Abou-SalehEPJ Web Conf., 140 (2017) 15009DOI: https://doi.org/10.1051/epjconf/201714015009