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首页> 外文期刊>Canadian Geotechnical Journal >Hydraulic conductivity of clay mixed with nanomaterials
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Hydraulic conductivity of clay mixed with nanomaterials

机译：粘土与纳米材料混合的水力传导率

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摘要

The focus of this note is to investigate the hydraulic conductivity behavior of clay mixed with nanomaterials. Two different nanomaterials-namely, gamma-aluminum oxide powder (gamma-Al2O3) and nano-copper oxide (CuO)- were selected and mixed with clay at different percentages (i.e., 2%, 4%, and 6%). Hydraulic conductivity tests were carried out in a flexible wall permeameter following the ASTM D5084 standard. Mercury intrusion porosimetry (MIP) tests were also carried out to determine the pore-size distribution. At 2% of gamma-Al2O3 and nano-CuO, the hydraulic conductivity of clay decreased 30% and 45%, respectively. As the proportion of the nanomaterial increases, the reduction of hydraulic conductivity becomes less prominent as flow paths devoid of nanomaterials are unlikely. Reduction of hydraulic conductivity is due to the pores of clay being clogged by the nanomaterial. Pore-size distribution curves show that the largest pore size reduced by 20% when clay was mixed with 4% nano-CuO.
机译：本文的重点是研究粘土与纳米材料混合的水力传导行为。选择两种不同的纳米材料-γ-氧化铝粉末（γ-Al2O3）和纳米铜氧化物（CuO）-并以不同的百分比（即2％，4％和6％）与粘土混合。遵循ASTM D5084标准，在柔性壁式渗透计中进行了水力传导性测试。还进行了压汞法（MIP）测试，以确定孔径分布。在γ-Al2O3和纳米CuO含量为2％时，粘土的水力传导率分别下降了30％和45％。随着纳米材料的比例增加，水力传导率的降低变得不太明显，因为缺少纳米材料的流路是不可能的。水力传导率的降低是由于粘土的孔被纳米材料堵塞了。孔径分布曲线表明，当粘土与4％纳米CuO混合时，最大孔径降低了20％。

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