前几年,一些地方的住宅、医院、学校和农村建筑中,发现了砖砌体严重裂缝、墙面抹灰大面积起鼓的工程质量事故,仅上海地区就涉及到数十个单位工程,严重地影响了使用。经过调查分析,原来这些工程的砌筑、抹灰砂浆中,采用了硫铁矿渣(俗称红 In the past few years, in some places of residences, hospitals, schools, and rural buildings, serious quality cracks in brickwork and plastering on the wall surface have been discovered. Only the Shanghai area involved dozens of unit projects. Seriously affected the use. After investigation and analysis, the pyrite slag (commonly known as red) was used in the masonry and plaster mortar of these projects.