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Zapobieganie degradacji murów licowych

Wesołowska Maria

Materiały Budowlane

2020

nr 12

44--46

Evaluation of the influence of wind-driven rain on moisture in cellular concrete wall boards

Alsabry A., Nikitsin V. I., Kofanov V. A., Backiel-Brzozowska B.

International Journal of Applied Mechanics and Engineering

2017

Vol. 22, no. 3

509--519

The non-stationary moisture level of a cellular concrete wall board in a heated utility building located in the northern part of the town of Brest (Belarus), depending on the climatic influence, was assessed in this work. The results were obtained both in a calculation experiment and a physical test. It was observed that the main reason for the high moisture levels in cellular concrete is wind-driven rain intensifying the process of free capillary moisture transfer. A comparative analysis of the results of the physical test and the calculation experiment showed that the THSS software elaborated by the authors was able to predict the actual moisture levels of the shielding structure under study accurately enough when precise data concerning the thermal and physical characteristics of the materials as well as the occurring climatic influences were submitted.

Incorporation of capillary properties of materials in modeling of courtain walls loaded by the wind-driven rain

Alsabry A.

International Journal of Applied Mechanics and Engineering

2011

Vol. 16, no 4

1205-1213

In evaluation of the state of moisture of courting walls one needs data of the intensity of the rainfall on a vertical surface of the construction (wind-driven rain) WDR and of the absorption coefficient of the rain. In this work a mathematical model is presented which allows to estimate the state or moisture of courting wall s under the action of wind-driven rainfalls. This model does not require the use of the average rain absorption coefficient proposed by Kunzel (i.e., it allows to avoid averaging of water absorption ability of the material) and increases the accuracy of the estimation of the state of imbuement of courting walls, in some cases on 30% (depending on climatic conditions).