Dissolution and leaching mechanisms of calcium ions in cement based materials

Dissolution and leaching mechanism of the calcium ions in cement based material has an important influence on its service performance. In this paper, the mechanism of the dissolution and leaching process of cement based materials was analyzed. The results showed that early dissolution and leaching behavior of cement-based materials was different with the later period, and therefore this paper was just focus on the early dissolution. At the early period of dissolution and leaching, it was mainly due to the chemical dissolution process by discussing the mechanism of this period; moreover, mathematics mechanism of early dissolution of calcium in cement based materials was determined by using chemical kinetics combined with mathematic calculated, and the chemical mechanism model was then verified by using the literature data.