近年来,各地采用面砖饰面日益增多,特别在南方地区的面砖饰面,大多是在一层打底砂浆层上贴面砖,勾缝而成。但因一层打底砂浆层较厚,则其裂缝、空鼓时常可见。还有面砖勾缝开裂、接槎有缝隙,也屡见不鲜。再加上南方地区用瓦刀砌墙,用瓦刀批头缝等,砌筑砂浆不饱满,空头缝多等综合因素,当外墙面上的雨水,通过面砖勾缝上的裂缝、接头槎孔隙进入空鼓面砖,或进入打底砂浆 In recent years, there has been an increase in the use of tile facings throughout the country, particularly in the southern region, where most of the tile finishes are made by affixing tiles on a layer of mortar. However, due to the thicker mortar layer, the cracks and hollowings are often visible. There are cracks in the cracks on the bricks, and cracks in the joints. In addition to the use of trowels in the south to build walls, with trowels to approve the first seam, etc., masonry mortar is not full, empty joints and other comprehensive factors, when the rain on the outer wall, through the cracks in the tile joints, joints Porosity into empty drum tiles, or into bottoming mortar