The construction moves annually, tons of cement for their diverse applications, but their manufacturing generates high levels of environmental pollutants. Resulting from this is a constant search for new sustainable and alternative methods. In this work, the research was directed at two aspects: the addition of coconut fibers (CF) and sisal (SF) to a concrete reference, with the intention of increasing their national demands and diminishes the impact of the amount of waste disposed the environment after consumption of the fruit and reducing the cement consumption in each dosage, respectively; and photocatalysis of gaseous pollutants by mortars based nanocomposite titanium dioxide, anatase phase. For the evaluation of concrete with additions testing compressive strength, dimensional change of mortar bars exposed to aggressive sulfate solution and monitoring the durability of specimens aged in chambers salt spray and weathering dioxide were performed the technique of sulfur corrosion potential. Mortars with TiO2 were evaluated for their potential for photocatalytic reduction in the concentration of NOx in gas type UV-A chamber. The results showed an increase up to 16% of the strength of concrete with additions and efficiency of mortars with levels of nano TiO2 anatase-phase from 20%, by weight, to promote photocatalysis of NOx around 40% in the presence UV-A radiation.
concrete additions; coconut fiber; sisal fiber; durability; photocatalytic mortar
