摘要
采用特制的压缩仪开展不同盐度下蒙托土的压缩试验,探讨了盐度对蒙脱土的压缩特性的影响。研究结果表明:相同固结压力下,不同盐度土样的孔隙比随盐度的增加而降低。蒙脱土的重塑屈服应力、e*100、C*c等均随盐度的增加而降低,且在盐度效应4%时降低较快,在盐度大于4%后降低较慢。在固结压力大于100k Pa时,采用孔隙指数可将不同盐度蒙脱土的压缩曲线归一化至ICL或EICL。
We adopt special compression apparatus to carry out compression test under different salinities montmorillonite, and discusses the effect of salinity on the compression characteristics of montmorillonite. The results show that under the same consolidation pressure, different soil salinity void ratio decreases with the increase of salinity. Montmorillonite remodeling yield stress, e＊100, C＊c and so on are decreased with the increase of salinity, and the salinity effect is reduced by 4%,and lowering salinity more than 4 percent becomes slower. When consolidation pressure is greater than 100 k Pa, the compression curves of different salinity montmorillonite can be normalized to the ICL or EICL by void index.
出处
《江苏建筑》
2016年第1期82-84,88,共4页
Jiangsu Construction
基金
国家自然科学基金青年基金(No.51408524)
江苏省交通厅科技项目(N0.201401T-1)
关键词
蒙脱土
压缩
盐度
重塑屈服应力
montmorillonite
compression
salinity
remodeling yield stress
