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矿棉—石棉硅酸盐材料是用硅酸盐胶凝材料(以石灰、矿渣及少量石膏配成),矿物棉和石棉纖維配制成的。試制中所用石灰、粒状高炉矿渣、石膏的配比为1∶4∶0.1;矿物纖維材料是矿渣棉、西康四級石棉;外加物为400号矿渣水泥。为了找出矿棉代替石棉的适宜摻量,試驗中我們采用了与通常石棉水泥制品相同的配比:胶凝材料85%;纖維材料15%。成型工艺与湿法生产石棉水泥制品基本相同。試件成型压力为100公斤/厘米~2,压型后試件尺寸为13×3×1厘米。試件制作后进行蒸汽养护、养护温度为95℃,养护时間为18小时。試件养护
Mineral wool-asbestos silicate materials are formulated with silicate cementitious materials (composed of lime, slag and a small amount of gypsum), mineral wool and asbestos fibers. The ratio of lime, granulated blast furnace slag and gypsum used in the trial production is 1:4:0.1; the mineral fibre material is slag wool, grade 4 asbestos of Xikang; and the additive is No. 400 slag cement. In order to find out the appropriate amount of mineral wool to replace asbestos, we used the same ratio as the normal asbestos cement product: 85% of cementitious material and 15% of fiber material. The molding process is basically the same as the wet production of asbestos cement products. The test piece molding pressure was 100 kg/cm~2, and the test piece size after pressing was 13*3*1 cm. After the test piece was made, steam curing, curing temperature was 95°C, and curing time was 18 hours. Sample maintenance