HIGH PERFORMANCE CONCRETE USING NANO TITANIUM DIOXIDE AND METAKAOLIN AS ADDITIVE

Abstract

In the modern developing world, the environmental protection is compromised due to increasing pollution with rapid development across various countries. The major problem arises is to maintain quality of development without having any negative impact over the environment. Use of new innovations and materials like nano particles containing high performance concrete can solve this issue without compromising the quality and environmental protection. Cement concrete has significant problems in achieving high compressive strength and high durability in structures. In this content, metakaolin is a material with pozzolanic property which is used in wide variety of partial replacement of cement in concrete that has been treated as economical and also improves the strength and durability of concrete structure and making concrete with titanium dioxide and cement, which helps in removing smog from the atmosphere when the concrete is exposed to ultraviolet light. In order to clean smog air, the nitrogen oxides available need to be converted into different, less hazardous compounds such as ions of nitrate. The nitric acid is produced from the reaction of nitrate ions; this acid chemically reacts with the grout to form a less harmful neutral salt which is washed away using precipitation. This reaction occurs at slow rate in nature. The reaction is increased up with the presence of titanium dioxide, which serves as photo catalyst, which means it accelerate the reaction in the presence of light. The addition of metakaolin and titanium dioxide in cement concrete as a partial substitute material for cement is reviewed in this analysis that shows excellent results. 6 This will save the energy and natural resources and results in waste material reduction which leads to environmental protection. The techniques have already been incorporated into different concrete structures and undergoing performance testing. Concrete infused with titanium dioxide and metakaolin have better and increased compressive strength and flexural strength than ordinary concrete, providing both environmental and structural advantage. In the analysis, the effect of Macro metakaolin particles and Nano Titanium Dioxide (TiO2) is determined on ordinary Concrete of M-50 grade using different proportions as 0.5%, 1.0%, 1.5% of Titanium Dioxide and 5%, 10%, 15% of metakaolin in regarding with the cement weight. The Strength parameter, Workability at various proportions of Metakaolin along with Titanium Dioxide is tested at various time durations.