Mechanical properties of oil contaminated saline soil solidified with lime and fly ash

被引：0

作者：

Li M. ^{[1
,2
]}

Wang C. ^{[1
]}

Du H. ^{[3
]}

Zhang J. ^{[1
]}

机构：

[1] School of Civil Engineering, Hebei University of Technology, Tianjin

[2] Hebei Research Center of Civil Engineering Technology, Hebei University of Technology, Tianjin

[3] School of Energy and Environment Engineering, Hebei University of Technology, Tianjin

来源：

Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2017年 / 36卷

基金：

中国国家自然科学基金;

关键词：

Oil contaminated soil; Saline soil in inshore; Soil mechanics; Solidification with lime and fly ash; Stress-strain curve; Unconfined compressive strength;

D O I：

10.13722/j.cnki.jrme.2016.0517

中图分类号：

学科分类号：

摘要：

Physical and mechanical properties of oil contaminated soil is poor, thus improve its strength is the premise to reuse in engineering. Saline soil contaminated by oil was investigated and lime and fly ash were chosen as solidified materials. Unconfined compressive strength was analyzed to quantify the effectiveness and also to factors. Results indicate that: (1) lime and fly ash solidification can improved significantly the mechanical properties oil contaminated soil, the strength of solidified soil(12% lime and 20% fly ash) meets the strength requirements to secondary highway up and down embankment and foundation replacement in Specifications for Design of Highway Subgrades (JTG D30-2015), as oil contaminated level less than 8%, the strength reach to requirements of expressway and arterial highway. (2) Stress-strain curve of solidified soil include linear load, nonlinear rising and decline phase, and it presents strain softening damage. With the increasing of oil contaminated level, the plastic deformation is enhanced. (3) Strength of solidified soil decreased as oil contaminated level sintensified, oil contamination reduces the reaction rate, and then weakens solidification among lime, fly ash and soil particles. (4) For oil contaminated level within 12%, the suitable solidified parameters are 12% lime, 22% fly ash andcuring period of 28 d. © 2017, Science Press. All right reserved.

引用

页码：3578 / 3586

页数：8

共 28 条

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