All these conditions were found to have almost insignificant effects on the workability and efficiency of TiO 2 except for one: relative humidity.
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The Effectiveness of Liquid PUD-TiO<sub>2</sub> Photocatalyst on Asphalt Pavement.
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The sentences
However, a decreasing trend was observable in both samples, regardless of whether the photocatalyst was present, leading to the conclusion that the photocatalyst coating did not have any effects on the TSR results. 4.4.