烧结多孔砖外墙裂缝成因解析——以某化工园区三层工业厂房为例

Analysis on the cause of cracks in external wall of sintered porous brick ——Take a three-storey industrial plant in a chemical industrial park as an example

烧结多孔砖含有大小不同、形状不一的气孔,当外墙长时间处于多雨且低温环境下,水分通过抹灰层细裂缝进入砖内滞留,以致达到饱和状态;砖内滞留的水分结冰,体积膨胀,砖块开裂;开裂的砖块又促进抹灰层裂缝进一步增大,更多的雨水进入砖内,从而使外墙开裂程度越来越严重;砖内石灰爆裂的发生,更加剧了砖块的冻坏开裂进程。

Fired perforated brick contains pores of different sizes and shapes,When the exterior wall is in a rainy and low temperature environment for a long time,water enters the brick through the fine cracks in the plastering layer,and then reaches the saturation state;the water retained in the brick freezes,expands,and the brick cracks;the cracked brick further increases the cracks in the plastering layer,and more rain enters the brick,thus causing the exterior wall to crack The degree of wall cracking is more and more serious,and the occurrence of lime burst in brick aggravates the process of brick freezing cracking.