集料的矿物学特征及其碱活性

Mineralogical Distinguishing Charactoristics and Alkali Reactivity of the Aggregates

对集料进行了化学成分分析 ,另外还采用XRD、显微镜等手段对集料的矿物组成进行了分析 ,将结果与《砂、石碱活性快速试验方法》测定结果进行比较 ,并从矿物学特征出发 ,找出了八种实际集料的碱活性来源 ,从而全面把握集料的碱活性。研究发现 ,《砂、石碱活性快速试验方法》测定的结果与XRD、岩相法分析的结果相一致。

Combined with the analysis of chemical compounds, the methods of XRD and optical microscope were taken for analysing the mineral composition of eight kinds of aggregate. And the rezults were compared with that of measurements by 'Rapid test method of alkali reactivity to sand and stone', so as to find out the soures of alkali reactivity of the aggregates. It was found that the analysing rezults by 'Rapid test method of alkali reactivity to sand and stone', XRD and microscope are corresponded with each other.