碱性固化材料对红土地基的化学侵蚀  

Chemical Erosion of Laterite Soils by Alkaline Materials

作　　者：杨华舒[1] 杨宇璐[2] 闫毅志[1] 王毅[1] 汪皓[1] 胡应庭[1] 

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650051 [2]中国中铁二院昆明勘察设计研究院有限责任公司,云南昆明650200

出　　处：《建筑材料学报》2013年第1期159-163,179,共6页Journal of Building Materials

基　　金：国家自然科学基金资助项目(51069003;50869003;51169009);昆明理工大学精品课程项目(10968137)

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 lat- erite groundwork. Scene-sampling and archetype-testing were executed in a geotechnical engineering pro- ject. Chemical erosion of laterite by alkaline material were investigated, and accelerated life tests were de- signed 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.

关 键 词：岩土工程 红土 碱性固化材料 化学反应 侵蚀 

分 类 号：TU472.3[建筑科学—结构工程] P642.13[建筑科学—土工工程]