Determination and Comparisons of the Pore Structure of Nonwoven Geotextiles
Determination and Comparisons of the Pore Structure of Nonwoven Geotextiles
复制标题
非织造土工布孔隙结构的测定与比较
DOI：
10.1520/stp15591s
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
C. Lovell
中科院分区：
文献类型：
--
作者：
A. M. Elsharief;C. Lovell
采用压汞法（MIP）和图像分析技术对4个厂家的14种非织造土工布的微观结构性能进行了测试。不同的测试技术进行了尝试和评估为这两种方法。控制体积MIP选项被发现比压力表选项更适合土工织物。对于图像分析，使用一维模型来测量来自薄切片的放大照片的孔径分布。两种方法的结果表明，相同制造商的土工布的孔径分布相似，厚度是主要差异。然而，不同的土工织物制造商之间的孔隙率和比表面积的显着差异。图像分析和MIP得到的O95值远高于同一土工织物的表观孔径（AOS）和过滤孔径（FOS）。
Microstructural properties of 14 nonwoven geotextiles obtained from 4 manufacturers were measured using mercury intrusion porosimetry (MIP) and image analysis. Different testing techniques were attempted and evaluated forthe two methods. The controlled volume MIP option was found to suit geotextiles more than the pressure table option. For image analysis a one dimensional model was used to measure the pore size distribution from enlarged photographic prints of thin sections. The results from the two methods indicated similar pore size distribution for geotextiles from the same manufacturer with thickness being the major difference. However, significant differences in porosity and specific surface area between different geotextile manufacturers were obtained. The O 9 5 values obtained from image analysis and MIP were found to be much higher than the apparent opening size (AOS) and the filtration opening size (FOS) for the same geotextile.