Капиллярный подсос стенового керамического материала в зависимости от поровой структуры кирпича

Abstract

The article presents the results of the study by the method of mercury porosimetry of pore structure of ceramic samples formed in the factory, obtained by plastic molding and semi-dry pressing, as well as samples of bricks selected from structures built in the XIX century. It is shown that materials with a larger volume of open large pores have increased frost resistance. There has been established dependence of the capillary suction of ceramic materials on the size of the pores, taking into account the penetration of salt solutions (nitrates, sulfates, chlorides and carbonates) into the brickwork. There has been studied the efficiency and expediency of the introduction of microsilica (terra silicea) into the clay mass from the point of view of the possible effect on the pore structure and strength of the ceramic material. The results of the research will certainly contribute to the development of effective methods related to the preventing the formation of salt deposits (salt efflorescence) violating the aesthetics of the brick building facades, and will allow developing the methods for the restoration of brick structures destroyed as a result of erosion, salt corrosion and biodegradation.