Filtration Behavior of An Original Two-layered Nonwoven Geotextile
Nonwoven geotextiles have been widely used for separation, filtration, reinforcing and drainage. The filtration and drainage functions are especially attractive in the construction of soil structures. However, geotextiles may not prevent excess soil particles loss and allow a proper degree of water flow as effectively as initially expected, because the soil-geotextile system may become ineffective due to clogging. In this paper, an original two-layered nonwoven geotextile is produced according to the specification value for the function of filtration and drainage and experimentally discussed on the filtration behavior. The tests are performed on five different geotextiles. Experimental results indicate that with the increase of needle-punching density pore size initially reduces and then increases, whereas clogging potential firstly increases and then decreases. The geotextile can have optimal filtration properties at the needle punching density of 470 p/cm2.
Lianying Ji Jianyong Yu Lifang Liu
The Key Lab of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201 The Key Lab of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201
国际会议
上海
英文
5-7
2009-05-27（万方平台首次上网日期，不代表论文的发表时间）