“Analysis of the Physical and Mechanical Properties of mortars with Titanium Dioxide Additions.”

Muñoz Segura J.H.; Revilla Cabanillas C.D.; Carrión Rabanal K.N. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2026) · DOI: 10.18687/laccei2026.1.1.441

Resumen

'The construction sector continuously seeks materials that improve the durability and performance of structures. This study evaluates the effect of adding food-grade Titanium Dioxide TiO2 on the physical and mechanical properties of cement mortars. Mixtures were prepared with TiO2 substitutions of 0%, 0.5%, 1.0%, and 1.5% by weight of cement. The specimens were subjected to tests for compressive strength, absorption, capillarity, permeability, and resistance to accelerated weathering (freeze-thaw cycles). The results indicate that the addition of TiO2 positively influences the long-term compressive strength (28 days), showing a significant increase at 1.5% TiO2. Likewise, a reduction in water absorption and the capillary coefficient was observed, especially at the 1.5% dosage, suggesting a densification of the mortar matrix. Permeability showed variable behavior, while weathering resistance improved notably, with a reduction in the degradation of the specimen edges as the percentage of TiO2 increased. It is concluded that TiO2, particularly at 1.5%, acts as an efficient modifier of the mortar microstructure, enhancing its durability and mechanical strength, thus positioning it as a promising additive for the production of high-performance mortars.

Instituciones: Universidad Privada del Norte