Experimental study of the engineering criterion of the chemicalstability of red beds rock
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摘要: 为评价红层岩土化学特性对工程的影响,对红层岩土pH值、EC值、碳酸钙、芒硝、石膏等关键物质成分的变化规律进行了试验研究,提出了岩土化学稳定性的工程概念与分析思路,初步建立了pH值、EC值、碳酸钙、芒硝、石膏临界含量等指标组成的红层岩土化学稳定性综合判别标准,将红层岩土分为化学稳定性强、化学稳定性中等、化学稳定性差三类,为红层特殊岩土定量化评价与分类治理提供了参考依据。Abstract: In order to evaluate the chemical interaction degree between red beds rock and water,the properties of pH,EC,and some key materials are studied in laboratory;the idea of rock chemical-stability is advanced;the engineering criterion of red beds rock chemical stability is established,including pH,EC,percentages of key materials;according to the chemical stability criterion,the red beds rock is classified into three types: high chemical stability,middling chemical stability and low chemical stability;the chemical stability advice of quantifying evaluate and engineering design is provided for red beds projects.
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