Probabilistic Mesoscale Analysis of Concrete Beams Subjected to Flexure

Abstract In this paper, the probabilistic behavior of plain concrete beams subjected to flexure is studied using a continuous mesoscale model. The model two-dimensional where aggregate and mortar are treated as separate constituents having their own characteristic properties. represented ellipses generated under prescribed grading curves. Ellipses randomly placed so it requires analysis for Monte Carlo simulation with 20 realizations represent geometry uncertainty. nonlinear simulated an isotropic damage mortar, while assumed be elastic. softening defined in terms fracture mechanics parameters. This compared fixed crack macroscale study before Then, used simulate test experimental data shows good agreement. response presented through standard deviation, moment parameters cumulative probability density functions different loading stages. It variation characteristics between pre-peak post-peak behaviour load-CMOD