关于国标白水泥的基本知识你了解多少？国标白水泥是众多的白水泥中的一种，而在制作的过程中要使其产品它符合国家的相关标准，其中对于产品的技术性的要求包括了哪些下面就跟随贵阳白水泥厂家一起来了解吧！
How much do you know about the basic knowledge of GB white cement? The national standard white cement is one of the many white cement. In the process of making the white cement, it is necessary to make its product conform to the relevant standards of the state. The technical requirements of the product include what follows from the Guiyang white cement manufacturer.
一、国标白水泥中的不溶物
1. Insoluble compounds in national standard white cement
不同的水泥产品中的不溶物标准不一样，其中有不得超过0.75%、1.50%等区别。
The standard of insoluble substances in different cement products is different, and there should be no difference between 0.75% and 1.50%.
二、烧失量
Two. Heat loss
白水泥中的烧失量不得大于3.0％、3.5％。普通水泥中烧失量不得大于5.0％。
The loss of ignition in white cement shall not exceed 3% and 3.5%. The burning loss in ordinary cement should not be more than 5%.
三、氧化镁
Three. Magnesium Oxide
国标白水泥中的氧化镁的含量不宜超过5.0％。如果水泥经压蒸安定性试验合格，则水泥中氧化镁的含量允许放宽到6.0％。
The content of Magnesium Oxide in GB white cement should not exceed 5%. If the cement is qualified by autoclaved stability test, the content of Magnesium Oxide in cement will be relaxed to 6%.
四、三氧化硫
Four, three sulphur oxide
三氧化硫的含量不得超过3.5％。
The content of three sulphur oxide should not exceed 3.5%.
五、细度
Five, fineness
国标白水泥比表面积大于300m2/kg，普通水泥80m方孔筛筛余不得超过10.0%。
The national standard white cement specific surface area is larger than 300m2/kg, and the normal cement 80m square hole sieve can not exceed 10%.
六、凝结时间
Six. Setting time
初凝不得早于45min，终凝不得迟于6.5h，普通水泥初凝不得早于45min，终凝不得迟于10h。
The initial setting shall not be earlier than 45min, the final solidification shall not be later than 6.5h, the ordinary cement initial setting shall not be earlier than 45min, and the final solidification shall not be later than 10h.
七、安定性
Seven, stability
可以用沸煮法检验必须合格。
It can be tested by boiling method.
八、强度
Eight, strength
国标白水泥强度等级按规定龄期的抗压强度和抗折强度来划分，各强度等级水泥的各龄期强度不得低于标准值。
The strength grade of GB white cement is divided according to the compressive strength and flexural strength of the specified age. The strength of every strength grade cement must not be lower than the standard value.
