Chloride profiles with a peak – why and what are the consequences for predictions?

Chloride ingress profiles do almost always have a peak at some depth but most prediction models are missing this peak. Some models, such as the fib model, simply “cut off” slice of concrete up to in further predictions. Other use data only from beyond include if it has same properties rest concrete. A physical model been developed quantify local changes because leaching and consequences these with time. The uses Fick’s 1 st law for chloride diffusion linear binding. time is modelled simple square-root equation. assumed be surface into maximum leaching. depth-dependent porosity, binding coefficient first law.