日本語フィールド
著者：Sari, K.、 柴 錦春 読み: Sari, K.、チャイ ジン チュン題名：
GCLの自己修復能力および影響要因発表情報：Geotextiles and Geomembranes, Vol. 41, pp. 64-71. 巻: 41 ページ: 64-71キーワード：
ジオシンセティッククレーライナー、自己修復概要：抄録：Self-healing capacities of geosynthetics clay liners (GCLs) have been investigated using laboratory leakage rate tests. Two types of GCL were used. The first type was geomembrane supported GCL (GM-GCL) and the second was geotextile encased GCL (GT-GCL). The diameters of damage investigated were 5 mm to 50 mm. Adopted overburden pressures (p’) was 0 ~ 200 kPa. Tap-water, salty water with salt content of 1 % and ethanol and tap-water solution (10% ethanol) were used as fluids. The test results indicate that for both GM-GCL and GT-GCL, damages with diameters less than 30 mm can be self-healed provided the fluid is tap-water or the ethanol and tap-water solution. All factors tend to reduce the thickness of diffuse double layer around particles of bentonite tend to reduce the self-healing capacity of GCL and free swelling index can be used to evaluate the relative influence of fluids. Defining the ratio between the healed area and the total area of a damaged hole as area healing ratio (h), h value of using the salty water is much lower than that of the tap-water or the ethanol and tap-water solution. As for the effect of p’, while it can squeeze the hydrated bentonite into the hole to increase the area healing ratio, on the other hand, it had limited the amount of hydration induced expansion of the bentonite in GCLs. For the conditions tested, up to 200 kPa, the area healing ratio increased with the increase of p’ value.英語フィールド
Author：
Sari, K. and Chai, J.-C.Title：Self heaking capacity of geosynthetic clay liners and influential factorsAnnouncement information:Geotextiles and Geomembranes, Vol. 41, pp. 64-71. Vol: 41 Page: 64-71Keyword：
Geosynthetic clay liner, self-healingAn abstract：Self-healing capacities of geosynthetics clay liners (GCLs) have been investigated using laboratory leakage rate tests. Two types of GCL were used. The first type was geomembrane supported GCL (GM-GCL) and the second was geotextile encased GCL (GT-GCL). The diameters of damage investigated were 5 mm to 50 mm. Adopted overburden pressures (p’) was 0 ~ 200 kPa. Tap-water, salty water with salt content of 1 % and ethanol and tap-water solution (10% ethanol) were used as fluids. The test results indicate that for both GM-GCL and GT-GCL, damages with diameters less than 30 mm can be self-healed provided the fluid is tap-water or the ethanol and tap-water solution. All factors tend to reduce the thickness of diffuse double layer around particles of bentonite tend to reduce the self-healing capacity of GCL and free swelling index can be used to evaluate the relative influence of fluids. Defining the ratio between the healed area and the total area of a damaged hole as area healing ratio (h), h value of using the salty water is much lower than that of the tap-water or the ethanol and tap-water solution. As for the effect of p’, while it can squeeze the hydrated bentonite into the hole to increase the area healing ratio, on the other hand, it had limited the amount of hydration induced expansion of the bentonite in GCLs. For the conditions tested, up to 200 kPa, the area healing ratio increased with the increase of p’ value.