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A Preliminary Study of the Self-Healing of a Fully Penetrating Hole in GCLs on Full Hydration

机译:完全水化作用下GCL中完全穿透的孔的自修复作用的初步研究

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The self-healing capacity of 25.4, 30.2, 34.9, 41.3, and 50.8 mm-diameter circular fully penetrating holes in geosynthetic clay liners under 2 kPa applied stress is compared after full hydration using deionized water and 10 mM CaCl_2 solution. In deionized water, holes with diameters up to 41.3 mm self-healed but with an indentation about 1~2 mm-deep at the center of the larger self-healed zones. The hole with a diameter of 50.8 mm self-healed but the hole was filled with a layer of bentonite slurry with a 4~6 mm-deep indentation. Submerged in 10 mM CaCl_2 solution, holes with diameters less than 34.9 mm self-healed with a 1~6 mm-deep indentation. The 41.3 mm-diameter hole did not close up, leaving a 26.5~28.5 mm-diameter hole. This study shows the importance of the hydrating fluid on the potential for self-healing.
机译:在使用去离子水和10 mM CaCl_2溶液充分水合后,比较了2 kPa外加应力下土工合成粘土衬层中直径为25.4、30.2、34.9、41.3和50.8毫米的圆形完全穿透孔的自愈能力。在去离子水中,直径最大为41.3毫米的孔会自愈,但在较大的自愈区的中心处有大约1到2毫米深的压痕。直径为50.8毫米的孔可自我修复,但孔中填充了膨润土浆料层,其凹痕深为4至6毫米。浸没在10 mM CaCl_2溶液中,直径小于34.9 mm的孔可以用1到6 mm深的压痕自我修复。直径41.3毫米的孔没有关闭,留下了26.5〜28.5毫米的孔。这项研究表明了保湿液对自我修复潜力的重要性。

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