Research Of Photocatalytic Decomposition Titainum Dioxide On Asphalt Pavement

TiO₂ photocatalytic degradation of tail gas asphalt mixture,is the photocatalytic nano-TiO₂ added to the thin layer of the mixture,is the appropriate amount of TiO₂ added to the appropriate grade of asphalt mixture,after hot mixing Spread to the asphalt concrete pavement 15 25 mm thick thin layer?thin layer?or the amount of TiO₂ will be incorporated into the micro-surface,the slurry seal mixture?micro-formula?,and then shop Built the original asphalt mixture on the road.TiO₂ photocatalytic degradation of tail gas asphalt mixture on the road can not only improve the role of surface function can be improved,but also to achieve the purpose of degradation of vehicle exhaust and reduce air pollution,and sealed catalytic decomposition of lean road construction,Through the study of this paper for the TiO₂ sealant asphalt mixture to promote the use of laying the theoretical basis.In this paper,the photocatalytic degradation of tail gas perturbation tail gas asphalt mixture degradation of tail gas performance research and analysis.First,the combination of photocatalytic degradation test system design,and by simulating the actual conditions of the road environment set test parameters?temperature,tail gas concentration,light intensity,etc.?to ensure the accuracy of the test data.Then,the photocatalytic degradation experiments were carried out under two kinds of different TiO₂ dosage under natural light and ultraviolet light.The results show that the two kinds of mixtures have good degradation performance,and with the increase of TiO₂ content in the mixture,the tail gas degradation effect of TiO₂ thin layer and TiO₂micro-surface mixture is obviously improved.Under the same test conditions,the degradation efficiency of the two kinds of mixtures was significantly higher than that in the natural light under ultraviolet light.In addition,the utilization efficiency of TiO₂ photocatalyst was better than that of TiO₂ Thin layer mix.In order to explore the linear relationship between the content of TiO₂ and the road performance of the mixture,the road performance of the mixture under different TiO₂ dosage was tested and analyzed.The results show that: 1)For TiO₂ thin layer asphalt mixture,when the TiO₂ content is in the range of 0% 60%?accounting forthe quality of mineral powder?,with the increase of TiO₂ content,the high temperature resistance rutting performance,2)For TiO₂ micro-surface asphalt mixture,when the TiO₂ content in the range of 0% to 50%,with the increase in the amount of TiO₂,the mixture of the mixture Of the rutting resistance of a certain degree of improvement in the scope of the mixture of water damage capacity of the basic no effect;...