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屋面现浇水泥膨胀珍珠岩保温层中的膨胀珍珠岩,多呈松散状态、质轻、颗粒中空隙率较大。水泥水化反应标准稠度用水量只有水泥重量的25%左右,配合比中剩余的水分完全被珍珠岩吸收。当配合比水分过大,或施工中受水淋湿,珍珠岩吸水量剧增,在饱和状态下,可达其重量的4倍。这些水分
Roofing poured perlite cement perlite insulation in the expansion of perlite, mostly loose state, light weight, larger particles in the porosity. The standard consistency of cement hydration reaction water consumption is only about 25% by weight of cement, with the balance of the remaining water completely absorbed by perlite. When the proportion of water is too large, or water wet by the construction, perlite water absorption increased dramatically in saturation, up to 4 times its weight. These water