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自然环境和工业过程产生的酸性物质与红土中的氧化物发生反应,将导致红土工程的特性发生变化。基于红土破坏的化学分析,采用加速寿命试验,检测红土中氧化物变化对工程特性的影响。利用变异系数的灰色关联分析方法,探究氯离子为代表的酸性物质对红土的侵蚀,定量计算在酸性环境中,不同氧化物对红土工程指标的贡献率,从而获知成分变化对工程指标的影响。讨论了酸性环境对红土的侵蚀机理,为红土工程的发展趋势和劣化评估提供了新的分析思路,并为治理措施的选择提供了针对性较强的量化依据。
The reaction of acidic and acidic materials from the natural environment and industrial processes with oxide in the laterite will lead to changes in the properties of lateritic engineering. Based on the chemical analysis of lateritic damage, an accelerated life test was used to examine the effect of oxide changes in lateritic clay on engineering properties. By using gray relational analysis method of coefficient of variation, we explored the erosion of laterite by acidic substances such as chloride ion, and quantitatively calculated the contribution rate of different oxides to laterite engineering indexes in acid environment, so as to know the influence of composition changes on engineering indexes. The eroded mechanism of red soil by acidic environment was discussed, which provided a new analysis method for the development trend and degradation assessment of laterite engineering. It also provided a more specific quantitative basis for the selection of governance measures.