A chemo-mechanical model for biogenic sulphide corrosion of concrete

A chemo-mechanical model is presented for the simulation of biogenic sulphide corrosion in concrete sewer pipes. The chemical formulated terms a system coupled diffusion-reaction equations, which describe processes calcium hydroxide dissolution, silicate hydrate dissolution and gypsum formation. problem two-way with mechanical that captures damage caused by deformations, set numerical analyses illustrates realistically simulates growth layer consequent development material. validation experiment performed mimics process corrosion, from it confirmed adequately both shape experimental profile square root time depth.