# Humidity Conditions of Aerated Concrete Walls Depending on the Type of Finishing Coating
## 4 Conclusions  
In total, during the study, the humidity regime for 48 wall enclosing structures was analyzed. It was found that the use of the developed DBM makes it possible to reduce the temperature at the onset of condensation \(t_{b,c}\) by 1.5-7.0 \({}^{\circ}\)C and reduce the amount of condensate \(G_{\rm c}^{h}\) by 21.5-50.6%. Thus, the use of aerated concrete developed using a DBM for exterior finishing will allow for the maintenance of high thermal insulation properties of the exterior walls throughout the entire service life by improving the humidity regime Inside the wall. This will significantly reduce energy consumption for heating during the operation of aerated concrete buildings throughout the entire life cycle of such buildings. Reducing \begin{table}
\begin{tabular}{l l c c c c} \hline \hline \multirow{2}{*}{**City**} & \multicolumn{2}{c}{**Finishing Coating**} & \multicolumn{3}{c}{**Aerated Concrete Grade**} \\  & **Density \(\rho\), kg/m\({}^{3}\)** & **D350** & **D400** & **D500** & **D600** \\ \hline \multirow{4}{*}{Rostov-on-Don} & 650 & 0.00 * & 0.00 & 0.00 & 0.00 \\  & & 0.00 & 0.00 & 0.00 & 0.00 \\  & 1100 & 0.47 & 0.10 & 0.00 & 0.00 \\  & 1800 & 0.07 & 0.014 & 0.00 & 0.00 \\  & 1800 & 1.34 & 0.74 & 0.00 & 0.00 \\  & 0.19 & 0.11 & 0.00 & 0.00 \\  & 650 & 0.00 & 0.00 & 0.00 & 0.00 \\  & 0.00 & 0.00 & 0.00 & 0.00 \\  & 1100 & 1.63 & 0.87 & 0.00 & 0.00 \\  & 1800 & 0.20 & 0.11 & 0.00 & 0.00 \\  & 1800 & 2.60 & 1.75 & 0.25 & 0.00 \\  & 0.32 & 0.22 & 0.02 & 0.00 \\  & 650 & 3.06 & 2.06 & 0.95 & 0.52 \\  & 0.34 & 0.21 & 0.07 & 0.035 \\ Novosibirsk & 1100 & 4.93 & 3.03 & 1.35 & 0.74 \\  & 0.55 & 0.30 & 0.10 & 0.05 \\  & 6.18 & 3.71 & 1.50 & 0.83 \\  & 1800 & 0.69 & 0.37 & 0.12 & 0.055 \\  & 4.29 & 3.04 & 1.56 & 0.86 \\  & 0.36 & 0.23 & 0.10 & 0.045 \\  & 5.99 & 4.12 & 2.02 & 1.10 \\ Vorkuta & 1100 & 0.50 & 0.32 & 0.13 & 0.058 \\  & 6.76 & 4.58 & 2.24 & 1.19 \\
1800 & 0.56 & 0.35 & 0.14 & 0.063 \\ \hline \hline \end{tabular} Note *: above the line relates to an increase in weight moisture W,% for a layer of aerated concrete with a thickness of 0.05 m at the boundary of the outer finishing coating/aerated concrete; under the line relates to an increase in weight moisture W,% for the entire thickness of the aerated concrete.  
\end{table} 
Table 6: Increase in weight moisture, %. the consumption of energy resources will reduce the negative impact on the environment from the extraction, transportation, and combustion of energy resources. In addition, the use of the developed DBM will extend the service life of the exterior finishing materials and increase the duration of the non-repair operation of aerated concrete buildings. At the same time, it is important to note that the developed DBM is especially important to use when finishing aerated concrete with a density relating to D350-D400, since when using aerated concrete of these grades, the increase in weight moisture is more than two times higher compared to aerated concrete grades D500-D600. Also, when using the developed DBM, aerated concrete production waste will be efficiently processed. The results obtained are in good agreement with the results from other studies on similar topics [28; 29; 30]. The novelty of the research lies in the complex of findings obtained, reflecting the influence of the characteristics of the outer finishing coating, the density of aerated concrete, and the climatic characteristics of the humidity regime inside the outer walls. Based on the scientific novelty of our study, the following shortcomings in the current regulatory documentation governing the choice of exterior finishing coatings for aerated concrete can be distinguished:  
* There are no requirements for the thermal conductivity of external finishing coatings, while this characteristic significantly affects the humidity regime in external fences;
* Normalized values on average density and resistance to vapor permeability are given without taking into account the brand of aerated concrete.