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Analytical Study of the Variation of Pore Size Characteristics with Biaxial Tensile Strains on Woven Slit-Film Geotextiles

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Proceedings of the 8th International Congress on Environmental Geotechnics Volume 2 (ICEG 2018)

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Abstract

Woven geotextiles are typically subjected to complex unequal biaxial tensile strains in filtration applications. Analytical solutions have been proposed to predict the per cent open area (POA) and analytical pore size of woven slit-film geotextiles under certain biaxial tensile strains. The influence of unequal biaxial tensile strains on pore size characteristics of one woven slit-film polypropylene geotextiles was evaluated by image analysis. The ratios of warp to weft strains are set to be 2:1, 3:1 and 4:1, respectively. Comparisons of experiments and predicted results suggest that POA and pore size increase with the biaxial tensile strain. The increasing trend of POA and O95 can be predicted by the analytical solutions.

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Acknowledgements

This study was supported by National Natural Science Foundation of China (Grant 51708160), the Shandong Provincial Natural Science Foundation, China (ZR2015PE006), the Fundamental Research Funds for the Central Universities (HIT.NSRIF.2017018), and Research Innovation Foundation in Harbin Institute of Technology (2018).

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Correspondence to Lin Tang .

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Tang, L., Tang, XW., Qu, Sx. (2019). Analytical Study of the Variation of Pore Size Characteristics with Biaxial Tensile Strains on Woven Slit-Film Geotextiles. In: Zhan, L., Chen, Y., Bouazza, A. (eds) Proceedings of the 8th International Congress on Environmental Geotechnics Volume 2. ICEG 2018. Environmental Science and Engineering(). Springer, Singapore. https://doi.org/10.1007/978-981-13-2224-2_91

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