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本文通过时红粘土有效胶结铁含量确定方法的探讨，系统地研究了一种典型红粘土的胶结特征。结果表明：游离氧化铁起胶结作用的只是其中一部分，其含量可通过动态化学选择溶解法确定，有效胶结铁的溶蚀给红粘土的工程特性带来明显的影响。
In this paper, the determination method of the effective cementation iron content in red clay is studied, and the cementation characteristics of a typical red clay are systematically studied. The results show that only some of the free iron oxides are cemented. The content of the free iron oxides can be determined by the dynamic chemical selective dissolution method. The dissolution of effective cemented iron has a significant impact on the engineering properties of red clay.