EFFECT OF TiO2 ADDITION AS ANTIBACTERIAL AGENT IN PORTLAND CEMENT WITH DISC DIFFUSION METHOD

Abstract

One of the most widely use types of cement is Portland cement, but in a humid environment conditions it can cause bacteria to appear on the cement surface which causes health problem, therefore, it is necessary to modify cement with antibacterial properties. This study was conducted to determine the antibacterial effectiveness of TiO₂ in Portland cement with  Eschericia coli bacteria as the evaluating bacteria The disc diffusion method was use to evaluate the antibacterial properties by varying the TiO₂ in Portland Cement by 0%, 1%, 3% and 5%, and carried out with UV irradiation. The results showed that cement-TiO₂ can inhibit the growth of escericia coli bacteria with the best antibacterial effectiveness obtained in the addition of TiO₂ to Portland cement as much as 5% with UV irradiation for 60 minutes to produce an inhibition zone of 7,35 mm.