Abstract
This paper describes relationships between physical properties, mechanical properties and performance of NOx remediation of mortar incorporating titanium dioxide powder, and incorporating ratio of the powder. Physical properties such as a mortar flow and an air content were investigated by controlling dosage of a high-range water-reducing and air-entraining agent and of an air-entraining agent. Compressive strength, tensile strength, flexural strength and modulus of elasticity of the mortar decreased slightly with increase of the incorporating ratio of the powder. However, ratios of tensile and flexural strength to compressive strength, and Poisson’s ratios of the mortars were almost constant if the incorporating ratio changed. The mortar with the incorporating ratio of 15% showed about 30% of NOx remediation ratio. Performance of the NOx remediation had an effect of the incorporation of the powder. The mortar investigated in this study can be expected to apply to concrete structures such as a handrail, large scale pavement and a box culvert because of a high strength and a performance of NOx remediation.
