【摘要】：為測(cè)試某水電站壩址人工骨料的云母類型及其相對(duì)含量,采用X射線衍射(XRD)定量法對(duì)壩址開(kāi)挖材料中5種千枚巖和3種片麻巖進(jìn)行分析測(cè)試。結(jié)果表明,X射線衍射定量法可以準(zhǔn)確測(cè)試人工骨料中云母類型及相對(duì)含量,千枚巖中白云母的相對(duì)含量為18%~42%,片麻巖中白云母的相對(duì)含量為21%~26%。且XRD方法測(cè)試的云母含量為巖石總云母含量,不同于《水工混凝土砂石骨料試驗(yàn)規(guī)程》規(guī)定的細(xì)骨料中游離云母含量概念,因而不宜采用《水工混凝土施工規(guī)范》中規(guī)定的云母含量限值進(jìn)行限制。
[Abstract]:In order to test the mica type and relative content of artificial aggregate at the dam site of a hydropower station, five kinds of phyllite and three kinds of gneiss in the excavation material of the dam site were analyzed and tested by X-ray diffraction (XRD) quantitative method. The results show that the type and relative content of mica in artificial aggregate can be accurately measured by X-ray diffraction quantitative method. The relative content of Muscovite in kilomite is 18% 鈮，

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