土工布
渗透计
岩土工程
土壤水分
磁导率
过滤(数学)
堵塞
土工合成材料
环境科学
土壤级配
土壤科学
地质学
导水率
数学
化学
统计
考古
历史
生物化学
膜
作者
PC Knodel,G. Venkatappa Rao,Kavya Gupta,M.P.S. Pradhan
出处
期刊:Geotechnical Testing Journal
[ASTM International]
日期:1992-01-01
卷期号:15 (3): 238-238
被引量:6
摘要
In addition to soil retention and permeability requirements for a geotextile filter, a geotextile should be able to function without having a significant number of its openings clogged. In order to evaluate the long-term filtration behaviour of a soil-geotextile system, a permeameter is developed in which both the long-term flow rates as well as the gradient ratio tests can be conducted simultaneously for different soils at different densities. Uniformly graded Ottawa sand mixed with various percentages of fine-grained silty soil is used to represent the unstable soil condition for internal soil migration. Two types of needle-punched nonwoven and one type of woven geotextiles are used whose opening sizes satisfy the soil retention criteria for the soil mixtures used.
科研通智能强力驱动
Strongly Powered by AbleSci AI