This document discusses cracking of steel fiber reinforced concrete due to reinforcement corrosion. It used x-ray computed tomography to study corrosion-induced cracking and found that corrosion products migrated into voids and open cracks, relieving expansion pressure. Steel fiber reinforced concrete showed superior resistance to corrosion cracking compared to normal concrete. Nanoindentation found that the Young's modulus of rust decreases with increased confinement and damage, lowering expansion pressure. The corrosion cracking process was simulated using the Delft lattice model.