岩土工程学报2012，Vol.34Issue(1)：130-138,9.
腐蚀性场地形成的水泥土的劣化研究
Deterioration of soil cement stabilized in corrosive site
摘要
Abstract
The cement stabilized soil in natural condition, as well as stabilization in corrosive site, will be influenced by environmental pollution such as acid rain, seawater invasion or industrial pollution, which will lead to deterioration of the structure. Especially in the corrosive site, the strength of soil stabilized by cement will increase, but at the same time, it will decrease due to the deterioration at the beginning of stabilization. The experimental work is performed to study the strength of soil stabilized by cement in the corrosive site which is represented by sea water. Laboratory tests are carried out to measure the strength distribution by means of the micro cone penetration tests. Also, the element analysis tests using the ion chromatography to measure the distribution of Ca2＋ within the specimen are conducted. The effect of seawater pressure on the strength of cement stabilized marine clay is analyzed. Two conditions are prepared. In the first condition, two meters of seawater pressure are applied to the specimen by using vertical pipe filled by seawater, and the other specimen has no pressure applied. It is indicated that the deterioration extends quickly under seawater environment and the deteriorated depth becomes deeper with the increase of pressure. The element analysis shows that the concentration of calcium ions in deteriorated portion is lower than that in non deteriorated portion.关键词
水泥土/海相黏土/劣化/Ca2＋/海水环境/微型贯入试验Key words
cement stabilized soil/marine clay/deterioration/calcium ion/seawater environment/micro cone penetration test分类
矿业与冶金引用本文复制引用
杨俊杰,孙涛,张玥宸,苗佳丽..腐蚀性场地形成的水泥土的劣化研究[J].岩土工程学报,2012,34(1):130-138,9.基金项目
国家自然科学基金项目(50779062) （50779062）
