Impact of Fe, Mg and Ca elements on glass alteration: Interconnected processes

These two processes are tightly linked to the evolution of the pH. As the secondary phases precipitate, the pH decreases, making Ca more soluble and less retained in the gel. When the precipitation stops, Fe and/or Mg can be incorporated into the gel in replacement for Ca. From these conclusions, an organogram was established that can be used to predict the effects of chemical elements on glass alteration depending on their behavior.