The Effect of Atmospheric Pollution on Building Materials in the Urban Environment

Alexander V Kuzmichev,Andrey A Kuzmichev,Valery N Azarov

doi:10.32732/jma.2020.9.2.70

Alexander V Kuzmichev, Andrey A Kuzmichev + Show 1 more

Open Access

https://doi.org/10.32732/jma.2020.9.2.70

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Abstract

Nowadays atmospheric pollution affects not only the urban environment in general, but building materials, which leads to their corrosion, in particular. The article discusses the regularities of the adhesion process of particulate matter (dust) on the vertical surfaces of buildings and structures, which are made of various building materials. On the basis of experimental studies, regression dependences of the adhesion of urban dust on different vertical surfaces from random determining factors were obtained. Thus, by studying the regularities of pollution of urban environment objects, made of various building materials, it is possible to achieve their preservation, since they demonstrate the architectural and design features of various historical periods of the country's development.

Highlights

There is an increased level of background concentrations of pollutants in the urban air environment, which is caused by ecological factors and increases annually to a greater extent due to anthropogenic processes, such as industry, transport, housing and communal services
During the process of the removal of dust particles from vertical surfaces, in addition to these factors, the sticking density is of particular importance
When the values of the air flow directions to the vertical surface are in the ranges of 20° ÷ 30° and 150° ÷ 160°, which are called "transition zones", partial sticking and removal of dust particles occurs: ranges 25° ÷ 30° and 150° ÷ 155° are “zones of unstable sticking”, where particles mainly stick to the surface, the ranges 20° ÷ 25° and 155° ÷ 160° are “zones of unstable removal”, where particles mainly come off the surface (Figure 6)

Summary

Introduction

There is an increased level of background concentrations of pollutants in the urban air environment, which is caused by ecological factors and increases annually to a greater extent due to anthropogenic processes, such as industry, transport, housing and communal services. By studying the regularities of pollution of urban environment objects, made of different building materials, it is possible to achieve their preservation, since they demonstrate the architectural and design features of various historical periods of the country's development. The effects of pollution, degradation, corrosion and erosion caused by SO2 are very serious. The effects of air pollution on materials can be considered in terms of material loss, discoloration, contamination, structural failure and others. Both discoloration and structural failure due to air pollution in buildings can be negligible. Let us consider the effect of the main atmospheric pollutants on the state of building materials [1]

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