*Article* **Mineralization Reaction of Calcium Nitrate and Sodium Silicate in Cement-Based Materials**

**Isabel Miñano Belmonte 1,\*, Mariano Calabuig Soler 1, Francisco J. Benito Saorin 1, Carlos J. Parra Costa 1, Carlos L. Rodríguez López 2, Jorge del Pozo Martin 3, Víctor Martinez Pacheco <sup>4</sup> and Pilar Hidalgo Torrano <sup>4</sup>**


**Abstract:** The research consists in the design of the new cementitious materials capable of mitigating microfisurative damage through autonomous healing. This lies in the characterization of the materials to employees, study of the expanding agents (sodium silicate and calcium nitrate) and analysis of its mechanical properties and durability. The results revealed that under laboratory conditions, the applied repair agents proved to be powerful in producing an increase in the content of ettringite, favoring the sealing of the fissure. When they heal themselves, they lead to an improvement in durability and mechanical performance.

**Keywords:** self-healing concrete; calcium nitrate; mineralization reaction; cracks
