论文部分内容阅读
近几年来,使用小窑水泥量逐年增加,就钢筋混凝土结构工程来说,使用小窑水泥的也日益增加。众所周知,小窑水泥的质量是令人担忧的,一是安定性不稳定,二是强度波动大。去年国家标准局颁发了五大水泥的修订标准(即硅酸盐水泥、普通硅酸盐水泥、矿渣硅酸盐水泥、火山灰硅酸盐水泥以及粉煤灰硅酸盐水泥等五种),并由GB175-85代替GB175-77与GB 1344-85代替GB1344-77新标准验收规则中
In recent years, the amount of cement used in small kilns has increased year by year, and in the case of reinforced concrete structures, the use of small kilns has also increased. As we all know, the quality of small kiln cement is worrying. One is unstable stability and the other is strong fluctuation. Last year, the National Bureau of Standards issued five revised standards for cement (ie, Portland cement, ordinary portland cement, slag portland cement, volcanic ash portland cement, and fly ash portland cement). GB175-85 Replaces GB175-77 and GB1344-85 Replaces GB1344-77 New Standard Acceptance Rules