Moisture Behaviour of Masonry Wall at Rain and Strong Wind Effect

Abstract

To estimate the effect of wind pressure on the moisture penetration, split surface silicate bricks, samples of concrete-lime mortar and a small dimension mortared wall were chosen as the material for investigation. The choice of the materials was determined by the fact that significant part of exterior surfaces in Lithuanian houses are namely of silicate bricks. Silicate bricks of split surfaces absorb moisture well, therefore, are suitable as the object of the study.
To study the impact of rain with wind over the moisture content in walls, a special stand was used. The speed of the wind (m/s) was simulated respectively by pressure (Pa) to facilitate the experiment. The stand was attached to the surfaces of the wall under investigation; increased pressure was formed in addition to rain. The dependence of the saturation rate upon the rain intensity and formed pressure in the entire structure and for separate samples was investigated.