Affiliation:
1. Moscow State University of Civil Engineering (MGSU)
Abstract
The article discusses the possibility of reducing the atmospheric environmental load of highways by applying compositions with photocatalytic properties to acoustic screens. It is found that the amount of nitrogen oxides on the territory of the city of Moscow exceeds the MPC norms. Therefore, a potential way to reduce the level of the average daily and maximum one-time MPC of nitrogen oxides is proposed, when using coatings of traditional acoustic screens with photocatalytic compositions. Titanium dioxide in anatase form is considered as a photocatalytic agent. To reduce the density and increase the porosity of cement compositions, a cellulosic suspension obtained by saturation in an aqueous medium with subsequent homogenization is introduced. The effect of cellulose in the considered cement systems in combination with a photocatalytic agent has been investigated. By the method of mathematical planning, a two-factor compositional experiment is compiled. In result, the degrees of influence of titanium dioxide and cellulose additives on the strength, density and water absorption of the composites under study are established. The study of the structure of the obtained composites shows that TiO2 is mainly located on the surface of cellulose fibers, which theoretically increases the useful surface for photocatalytic reactions and, as a consequence, the final efficiency of the compositions.
Publisher
BSTU named after V.G. Shukhov
Subject
Psychiatry and Mental health,Neuropsychology and Physiological Psychology
Reference22 articles.
1. Каргаполов Н.В. Технология оценки загрязнения атмосферного воздуха автомобильным транспортом. // Евразийское Научное Объединение. 2019. № 10-4 (56). С. 351–356., Kargapolov N.V. Technology for assessing atmospheric air pollution by road transport [Texnologiya ocenki zagryazneniya atmosfernogo vozduxa avtomobilnym transportom]. Eurasian Scientific Association. 2019. No. 10-4 (56). Pp. 351–356. (rus)
2. Ляпидевская О.Б., Фрайнт М.А. Фотокаталитический бетон для дорожного строительства // Вестник МГСУ. 2014. № 2. С. 125–130., Lyapidevskaya O.B., Fraint M.A. Photocatalytic paving concrete [Fotokataliticheskij beton dlya dorodnogo stroitelstva]. Bulletin of the MGSU. 2014. Pp. 125-130. (rus)
3. Li H., Zhang M. H., Ou J. P. Abrasion resistance of concrete containing nano-particles for pavement // Wear. 2006. Vol. 260. № 11–12. Pp. 1262–1266., Li H., Zhang M. H., Ou J.P. Abrasion resistance of concrete containing nano-particles for pavement. Wear. 2006. Vol. 260. No. 11–12. Pp. 1262–1266.
4. Sija A., Tongrong D., Hao D., Ying Ch., Wanting Ch. Preparation of nano-TiO2-сoated SiO2 microsphere composite material and evaluation of its self-cleaning property // Nanomaterials. 2017. Vol. 7. №. 11. 367 p., Sija A., Tongrong D., Hao D., Ying Ch., Wanting Ch. Preparation of nano-TiO2-SiO2 microsphere coated composite material and evaluation of its self-cleaning property. Nanomaterials. 2017. Vol. 7, No. 11. 367 p.
5. Слесарев М.Ю., Попов К.В. Исследование эффективности применения фотокаталитических бетонов в городском строительстве // Современное строительство и архитектура. 2017. №3 (07). С. 18–20., Slesarev M.Yu., Popov K.V. Study of the efficiency of photo-catalytic concrete application in urban construction [Issledovanie effektivnosti primeneniya fotokataliticheskix betonov v gorodskom stroitelstve]. Modern building and architecture. 2017. No. 3 (07). Pp. 18–20. (rus)