铁道科学与工程学报2017，Vol.14Issue(8)：1639-1646,8.
不同pH值下水泥土力学与渗透特性试验研究
Experimental study about mechanic and permeability of soil-cement in different pH value
摘要
Abstract
In order to have a more comprehensive study about the mechanical and permeability characteristics of soli-cement in different pH environments, this paper took the unique red clay in Hunan region as an example. The affection factors including moisture content, water cement radio and cement content were considered, and a series of tests were conducted based on the orthogonal design method. The unconfined compressive strength and permeability coefficient were obtained at the ages of 3, 7, and 28 d. The influences of different pH environments and various factors on test were mastered, and the relationship between them was simulated by SPSS software. The test results show that soil-cement can improve the mechanic and permeability characteristics of red clay in different pH environments. The soil-cement has higher unconfined compressive strength and lower permeability coefficient in alkaline environment while the acid environment is opposite. The order about the three factors against the unconfined compressive strength and permeability coefficient is moisture content, cement content,water cement ratio. And the moisture content is the leading influence factor. With the increase of moisture content, the sample strength decreases linearly, but the permeability coefficient increases obviously. When the moisture content is low and the water cement ratio or cement content is high, the pH value of red clay has a weak effect on the permeability of soil-cement. However, the change law for the permeability characteristic of soil-cement changes when these factors are changed.关键词
水泥土/无侧限抗压强度/渗透系数/正交试验/pH值Key words
soil-cement/unconfined compressive strength/permeability coefficient/orthogonal test/pH value分类
建筑与水利引用本文复制引用
傅小姝,王江营,张贵金,陈迪,雷鹏..不同pH值下水泥土力学与渗透特性试验研究[J].铁道科学与工程学报,2017,14(8):1639-1646,8.基金项目
国家自然科学基金资助项目(51508039) （51508039）
