摘要
为了探索石膏对黄土强度的作用规律,以石膏含量、干密度、含水量为因子,设计正交试验方案,通过全自动三轴仪试验研究石膏对黄土力学性能的影响。结果表明,黄土的强度随干密度、石膏含量的增大而增大,随含水量的增大而减小;应变随干密度、石膏含量的增大而减小,随含水量的增大而增大。3个因子中干密度的影响最显著,其次是石膏含量和含水量。石膏含量是影响黄土力学性能的重要因素,黄土中添加石膏能使黄土的强度提高、变形减小、水敏性降低。
In order to explore the regularity of gypsum on the strength of loess, taking gypsum content, dry density and moisture content as factors, an orthogonal experimental scheme L9 （3^4 ） was carried out to study the effect of gypsum on the mechanical properties of loess by using automatic triaxial apparatus. The results show that, the strength of loess increases with the increase of dry density and gypsum content, decreases with the increase of moisture content; the strain decreases with the increase of dry density and gypsum content, increases with the increase of moisture content. The most significant influencing factor is dry density, followed by gypsum content and moisture content. Gypsum is an important factor affecting the mechanical properties of loess, which can increase the strength, decrease the deformation and reduce the water sensitivity of loess.
出处
《人民黄河》
CAS
北大核心
2015年第9期106-108,共3页
Yellow River
基金
教育部"长江学者和创新团队发展计划"创新团队项目(IRT1067)
关键词
力学性能
干密度
含水量
石膏
黄土
mechanical property
dry density
moisture content
gypsum
loess
