摘要
为了探究有机污染物对膨润土力学性状的影响,选取有机污染物富里酸、腐植酸钠和尿素为添加有机污染物,通过人工制备有机污染土进行压缩试验。试验结果表明,有机污染液降低了膨润土孔隙比和压缩指数,有机污染液浓度越大,对膨润土压缩性的影响越大;固有压缩曲线ICL和扩展的固有压缩曲线EICL对膨润土及有机污染土压缩曲线的预测效果良好。此外,提出了基于初始孔隙比及液限孔隙比的关于固有压缩指标的表达式。
In order to explore the influence of organic contamination on compression properties of bentonite,the study selects fulvic acid,sodium humate and urea as the additional organic pollutant,and does compression test through artificial preparation of organic polluted soil.The experiment results show that organic contaminant reduces the bentonite void ratio and compression index.The higher organic contaminant concentration is,the greater influence of bentonite compression is.Inherent compression curve(ICL)and expansion inherent compression curve(EICL)have good prediction effect on bentonite and organic contamination soil compression curve.Then the study proposes the expression of inherent compression index based on initial and liquid limit hole.
作者
陈永风
Chen Yongfeng(Shandong Huayu University of Technology, Dezhou 253000, China)
出处
《黑龙江科学》
2022年第8期17-20,共4页
Heilongjiang Science
关键词
有机污染物
膨润土
压缩性
压缩曲线归一化
固有压缩指标
Organic contamination
Bentonite
Compression property
Compression curve normalization
Inherent compression index
