Numerical approach to predict the flexural damage behavior of pervious concrete

This paper aims to develop a new numerical model to evaluate the flexural damage behavior of pervious concrete from its compositions. By considering this material within the framework of the quasi elasto-brittle approach, failure is modeled by the phase field method. Then, a taking-placing generation process of the extensive Monte Carlo simulation-type was constructed to account for the statistical effect of the pervious concrete structure. Various numerical investigations have been performed using this model. First, the modeling parameters were calibrated with the threepoint bending test, then numerical-experimental correlations were well captured for both elastic and post softening regimes for the different structure sizes. Archived crack pattern analyses were used to examine the influence of the pore structure on certain values of peak load. Finally, the linear relationship between the flexural strength and the porosity was confirmed by agreement with the simulation results, which comprised of empirical references.

Automated summary

This paper develops a new numerical model for evaluating the flexural damage behavior of pervious concrete. By using the phase field method and a Monte Carlo simulation, the failure process of pervious concrete is successfully modeled, and the influence of pore structure on peak load is studied.