摘要
采用试验的方法研究了水泥土在各种环境因素(水、不同化学溶液、不同浓度以及不同pH值等)影响下的力学特性,并对一定水泥掺量的水泥土试件的侵蚀特征及无侧限抗压强度试验进行了实时观测和记录,得到了水泥土试件的侵蚀特征照片和荷载位移曲线及相对应的破裂过程照片。对试验结果的分析表明,环境侵蚀对水泥土力学强度产生了明显的影响,而对破裂过程影响较小。探讨了水泥土在各种侵蚀环境下的侵蚀效应、破裂特征及破裂机理,为进一步分析环境侵蚀下水泥土的内部损伤演化规律和本构模型的建立奠定了基础。
An experiment on fracturing process of cemented soil is conducted to investigate the behaviors of cemented soil under various environmental conditions. The fracturing process of cemented soil is observed in real time using high-precision numeral camera. The surface effects of cemented soil are studied under different ionic strengths, values of pH and chemical solutions. The fracturing behaviors of cemented soil under environmental erosion are analyzed. At the same time, mechanisms of erosion are explained. The results show that environmental erosion has little effects on fracturing process in contrast to evident influence on mechanical strength.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第10期1778-1782,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
沈阳工业大学学科建设基金资助项目(521100401)
关键词
土力学
水泥土
环境侵蚀
破裂过程
破裂机理
Erosion
Fracture
pH effects
Soil mechanics
Strength of materials
