摘要
通过试验,作出了水在混凝土内的渗流曲线,并分析了水在混凝土中的渗流规律.结果表明,水在混凝土内的渗流并不满足线性达西定律,而是存在着明显的启动压力梯度.同时,由于启动压力梯度的存在,水在渗透过程中存在一个渗透平衡深度,而渗透达到平衡的时间受水压、渗透系数、启动压力梯度等因素影响.
The flow curves of concrete were obtained from experiment,the seepage law of concrete was then analyzed.Result shows that in concrete the no-Darcy model is followed and the starting pressure gradient is very important.Moreover,there's a balance depth in the process of water permeation because of the starting pressure.Furthermore,the balance time is influenced by the water pressure,permeability coefficient and starting pressure.
出处
《建筑材料学报》
EI
CAS
CSCD
北大核心
2009年第5期515-518,共4页
Journal of Building Materials
基金
国家重点基础研究发展规划(973计划)资助项目(2009CB623200)
国家自然科学基金重点项目(50539040)
关键词
混凝土
渗透性
非达西渗流
启动压力梯度
平衡深度
concrete
permeability
non-Darcy flow
starting pressure gradient
balance depth