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Results of Cerchar, LCPC, and equivalent quartz content from rolling indentation abrasion testing in plutonic rock
Bulletin of Engineering Geology and the Environment ( IF 4.2 ) Pub Date : 2021-06-26 , DOI: 10.1007/s10064-021-02335-x
Masih Moradizadeh , Akbar Cheshomi

The rolling indentation abrasion test (RIAT) is a recently developed method for measuring rock abrasivity. In this study, RIAT tests were performed on 17 plutonic rock samples and the weight lost by the mini-disc cutter (mg) after testing (RIATa), the mean value of 10 evenly distributed measurements of the cutter penetration depth into the rock in 1/100 mm (RIATi), abrasion-penetration rate (APR), and penetration-time rate (PTR) values were determined for the samples. The Cerchar abrasivity index (CAI), LCPC abrasivity index (LAC), and equivalent quartz content (EQC%) values were determined for the samples. The relationship of APR and PTR to CAI, LAC, and EQC% was investigated using regression analysis, and the Fisher test and empirical equations between APR-EQC%, PTR-EQC%, APR-PTR, PTR-CAI, APR-LAC, and PTR-LAC are proposed. The proposed equations were validated on three control samples and were found to be valid for plutonic rock. The RIAT test was used at different rotations speeds to determine their effect on the samples, and an optimal rotation speed has been proposed for each sample using the APR parameter. Comparison of the current results and those of previous research on sandstone showed that the trends of PTR-EQC%, APR-PTR, and PTR-CAI were similar. An experimental relationship has been proposed for these types of rock for APR-EQC%. For hard and highly abrasive samples, the trends for PTR-EQC%, APR-PTR, and PTR-CAI were similar for plutonic rock and sandstone, but for medium-to-high abrasivity samples, the penetration rate of plutonic rock was less than for sandstone in terms of abrasivity.



中文翻译:

深成岩中滚动压痕磨损试验的 Cerchar、LCPC 和等效石英含量的结果

滚动压痕磨损试验 (RIAT) 是最近开发的一种测量岩石磨蚀性的方法。在本研究中,对 17 个深成岩样品进行了 RIAT 测试,测试后微型圆盘刀具的重量损失 (mg) (RIATa),10 次均匀分布的刀具刺入岩石深度测量值的平均值/100 mm (RIATi)、磨损渗透率 (APR) 和渗透时间率 (PTR) 值被确定为样品。测定了样品的 Cerchar 磨损指数 (CAI)、LCPC 磨损指数 (LAC) 和等效石英含量 (EQC%) 值。APR 和 PTR 与 CAI、LAC 和 EQC% 的关系使用回归分析、Fisher 检验和 APR-EQC%、PTR-EQC%、APR-PTR、PTR-CAI、APR-LAC、和 PTR-LAC 被提出。提出的方程在三个控制样本上得到验证,并被发现对深成岩有效。在不同的转速下使用 RIAT 测试来确定它们对样品的影响,并且已经使用 APR 参数为每​​个样品提出了最佳转速。与以往砂岩研究结果相比,PTR-EQC%、APR-PTR和PTR-CAI的变化趋势相似。已经为这些类型的岩石提出了 APR-EQC% 的实验关系。对于坚硬和高磨蚀性样品,PTR-EQC%、APR-PTR 和 PTR-CAI 趋势对于深成岩和砂岩相似,但对于中高磨蚀性样品,深成岩的渗透率小于砂岩的磨蚀性。

更新日期:2021-06-28
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