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由于目前水泥供应紧张,节约水泥已成为十分重要.我省工业建筑面积数量很大,而其中不少厂房及其福利设施大都采用泡沫混凝土作为屋面保温材料.耗用于泡沫混凝土的水泥用量为数甚巨,因此,利用其他材料试制屋面保温材料以代替泡沫混凝土是非常必要的,麦草纤维空心板与水泥木屑空心板便是其中之两种. 屋面保温材料的技术要求均以泡沫混凝土为标准.具体要求如下: 1.容重小于400公斤/立方公尺; 2.抗压强度大于4公斤/平方公分; 3.导热系数小于0.13千卡/公尺·小时·度. 此外代用材料的成本应不高于泡沫混凝土的成本.
Due to the current tight supply of cement, it has become very important to save cement. There are a large number of industrial building areas in our province, and many of them and their welfare facilities mostly use foamed concrete as roof insulation. The amount of cement used for foam concrete is very low. As a result, it is necessary to use other materials to make roof insulation materials instead of foamed concrete. Wheat straw fiber hollow boards and cement wood chips hollow boards are two of them. The technical requirements for roof insulation materials are based on foam concrete. The requirements are as follows: 1. Bulk density is less than 400 kg/m3; 2. Compressive strength is greater than 4 kg/cm2; 3. Thermal conductivity is less than 0.13 kcal/meter-hour-degree. Also, the cost of substitute materials should not be too high. The cost of foam concrete.