碱性固化材料对红土地基的化学侵蚀
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摘要
碱性材料的固化措施对红土地基产生了不可忽视的长期侵蚀.在岩土工程现场进行了取样和原型试验,分析了导致材料损伤的化学反应,有针对性地设计了红土的碱液加速侵蚀试验,对比讨论了化学损伤前后红土的工程支撑指标变化、红土的工程支撑离子衰减,研究了碱性固化材料在酸性红土的接触带造成损伤的机制,认为化学反应是导致红土地基寿命降低、远期效益低下,乃至诱发灾难性事故的重要原因.
The alkaline viscous substances used as reinforcement have engendered long-term erosion of laterite groundwork.Scene-sampling and archetype-testing were executed in a geotechnical engineering project.Chemical erosion of laterite by alkaline material were investigated,and accelerated life tests were designed for laterite eroded by alkaline materials.Engineering factors were compared and concentrations of seeping support-ions were tested for studying laterite eroded by alkaline viscous substances.Mechanism of laterite groundwork eroded by alkaline viscous substances was established.The chemical reactions are important cause for reduction of laterite groundwork life and long term economic benefit,and even can cause catastrophic accident.
The alkaline viscous substances used as reinforcement have engendered long-term erosion of laterite groundwork.Scene-sampling and archetype-testing were executed in a geotechnical engineering project.Chemical erosion of laterite by alkaline material were investigated,and accelerated life tests were designed for laterite eroded by alkaline materials.Engineering factors were compared and concentrations of seeping support-ions were tested for studying laterite eroded by alkaline viscous substances.Mechanism of laterite groundwork eroded by alkaline viscous substances was established.The chemical reactions are important cause for reduction of laterite groundwork life and long term economic benefit,and even can cause catastrophic accident.
引文
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