EXPERIMENTAL STUDIES ON BASIC PROPERTIES OF CONCRETE USING TiO2 AS ADMIXTURE

As buildings need to have not only high design but also durability, it’s necessary to think about multifunction materials. In this study, for the purpose of clarifying the basic properties of mortar and concrete using titanium oxide (TiO2) as an admixture, the authors have carried out experiments on the fresh and hardened properties focusing on the W/C and TiO2 ratios. The results suggest that workability properties could be satisfied and higher strength achieved by substituting optimum levels of TiO2. In addition, when examining brightness retention it was found that mortar containing 15 % TiO2 had the best resistance to brightness degradation and self-cleaning performance with TiO2 as a photocatalyst. As a result, using proper TiO2 as an admixture in mortar or concrete can be useful for giving additional performance such as brightness retention and self-cleaning effects on the surface, as well as strength development and crack control of the specimen itself