Multiscale Modeling of Rock Mechanical Behavior Under Extreme Loading Conditions Marte S. Gutierrez, Department of Civil & Environmental Engineering Virginia Tech, Blacksburg, VA 24061 Motivation: Understanding and modeling of the nanoscale behavior of rock-forming minerals and their interfaces is essential to accurately predict the behavior of rocks at different length and time scales, and under extreme loading conditions. AFEM simulation of Montmorillonite The main objectives of project are: 1) to develop computational models for simulating the nanoscale behavior of rock minerals and their interfaces, 2) to develop homogenization schemes to integrate nanoscale response of rock minerals and their interfaces in micro/macroscopic models of rock masses, and 3) to apply the models to improve the understanding of the response of rock masses under extreme.