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北京市自从在五层(和五层以下)居住建筑中,采间装配式大型壁板结构以来,1966年以前外壁板主要采用混凝土水渣夹芯复合板材;1966年以后改用粉煤灰矿渣混凝土单一材料板材,厚度为24～27厘米。以装配式大型壁板墙体代替砖砌墙体,出现了结露问题,它直接影响到居民的生活使用,也关系到壁板建筑的发展问题。为了探求解决的途径,曾分别在1966年和1972～1974年,在国家建委建筑科学研究院物理所、冶金部冶金建筑研究院、清华大学和市房管局、建筑材料研究所、建筑工程研究所、第四建筑
Since Beijing adopted a large-scale siding structure in the five-story (and below-five-floor) residential building, the external siding was mainly made of concrete slag sandwich composite plates before 1966; after 1966, it was converted to fly ash slag. Concrete single material plate, thickness of 24 to 27 cm. The use of prefabricated large-scale siding walls instead of brick walls has brought about condensation problems. It has a direct impact on the lives of residents and the development of siding construction. In order to explore solutions, they were in 1966 and 1972 to 1974 respectively. They were Institute of Physics of the State Construction Engineering Research Institute, Metallurgical Building Research Institute of the Ministry of Metallurgy, Tsinghua University and Housing Authority, Building Materials Research Institute, and Architectural Engineering Research Institute. Fourth Building