为了进一步改善北京地区大北窑、前三门高层公寓工程所采用的28厘米厚全膨珠混凝土板材的热工性能,达到减轻建筑物自重,便于吊装施工的目的,于1977年初和北京市第三建筑构件厂、北京市建筑设计院共同研究,确定了十一种板材方案进行对比实验,为确定1978年大板板型时参考使用。现将实验结果简介如下 In order to further improve the thermal performance of the 28-cm-thick fully expanded concrete slab used in the Dabei Kiln and the first three high-rise apartment projects in Beijing, the purpose of reducing the weight of the building and facilitating the hoisting construction was achieved in early 1977 and in Beijing. The three building components factory and the Beijing Architectural Design Institute jointly studied and determined 11 kinds of plate solutions for comparative experiments, which were used for reference when determining the 1978 large-scale plate type. The experimental results are now summarized as follows