BS EN 451-1:2017规定了飞灰中游离氧化钙含量的测定程序。欧洲标准规定了参考程序。如果使用其他方法，则需要证明它们给出的结果与参考方法得到的结果相同。交叉引用:EN 450-1:2012ISO 3534-1:2006第2版（R10）ISO 565:1990（R06）。购买本文件时可获得的所有现行修订均包含在购买本文件中。

BS EN 451-1:2017 specifies the procedure for the determination of free calcium oxide content in fly ash.The European Standard specifies the reference procedure. If other methods are used it needs to be shown that they give results equivalent to those obtained by the reference method.Cross References:EN 450-1:2012ISO 3534-1:2006 Ed 2 (R10)ISO 565:1990 (R06)All current amendments available at time of purchase are included with the purchase of this document.