如今的楼房屋顶,普遍采用钢筋混凝土板。钢筋混凝土板的制作工艺复杂,成本高。为了改善屋顶结构,使之体轻、保温,施工方便,成本低,对屋顶隔热材料及设施有改进的必要。石棉质轻而保温,是良好的隔热材料。我们用石棉和水泥作了石棉水泥屋顶隔热层试验,取得了较为满意的结果。试验材料选用四川石棉矿生产的七级石棉和水泥厂生产的400号(硬练)小水泥。一、实验室试验及其结果 Today’s roofs of buildings are generally made of reinforced concrete slabs. The manufacturing process of reinforced concrete slabs is complex and costly. In order to improve the roof structure, make it lighter, more heat-insulating, easier to construct, and less costly, it is necessary to improve the roof insulation materials and facilities. Asbestos is light and heat-insulating and is a good insulation material. We made asbestos cement roof insulation test with asbestos and cement and achieved satisfactory results. The test materials were selected from Grade 7 asbestos produced from Sichuan Asbestos Mine and No. 400 (hardened) small cement produced from cement plants. First, laboratory tests and their results