FE Modelling of Crack Width and Localization in Reinforced Concrete

The crack width assessment and reliable modelling of the crack localization process are essential for sustainability control in reinforced concrete structures affected by corrosion. Accurate modeling of crack propagation is critical for evaluating deflections, serviceability limit states, and the redistribution of internal forces, which influence ultimate limit states. This paper examines various modeling approaches and their impact on crack width predictions and load-displacement responses. The applied concrete cracking model uses the finite element method and nonlinear fracture mechanics. Influences of mesh size, reinforcement modeling approaches, and critical material parameters are analyzed. Results are validated against experimental data from direct tension tests of reinforced concrete prisms.