토목섬유점토차수재의 차수성은 민물이외의 반응물에 사용될 경우 저하되는 것으로 알려져 있다. 따라서 본 연구에서는 차수재의 차수성를 결정짓는 벤토나이트 팽윤재를 이용하여 증류수, 침출수, 바닷물 및 3% NaCl 용액등의 반응물에 대한 자유팽윤도를 측정하였으며 Poly(acrylic acid)와 PVA(Polyvinyl Alcohol), SCMC (Sodium ...
토목섬유점토차수재의 차수성은 민물이외의 반응물에 사용될 경우 저하되는 것으로 알려져 있다. 따라서 본 연구에서는 차수재의 차수성를 결정짓는 벤토나이트 팽윤재를 이용하여 증류수, 침출수, 바닷물 및 3% NaCl 용액등의 반응물에 대한 자유팽윤도를 측정하였으며 Poly(acrylic acid)와 PVA(Polyvinyl Alcohol), SCMC (Sodium Carboxymethyl Cellulose)를 각각 첨가한 벤토나이트의 자유팽윤도의 변화를 비교 평가하였다. 또한 바닷물에서의 토목섬유점토차수재의 투수계수를 측정하였으며 바닷물이 차수성에 어떤 영향을 미치는지 확인하였다. 벤토나이트의 평균 자유팽윤도는 증류수 > 침출수 > 바닷물 순으로 감소하였다. 바닷물에서와 3% NaCl 용액에서의 자유팽윤도 값은 근소한 수치를 보였다. Poly(acrylic acid)가 첨가된 벤토나이트는 모든 반응물에서 팽윤성 향상을 나타내었고 PVA가 첨가된 벤토나이트는 증류수를 제외한 반응물에서는 팽윤성 향상을 보이지 않았다. SCMC가 첨가된 벤토나이트의 팽윤성은 3% NaCl 용액에서 다소 자유팽윤도가 떨어지나 전반적으로 팽윤성이 향상되었다. 토목섬유점토차수재의 차수성은 증류수에 비해 바닷물의 경우 약 10³배 감소하였다.
토목섬유점토차수재의 차수성은 민물이외의 반응물에 사용될 경우 저하되는 것으로 알려져 있다. 따라서 본 연구에서는 차수재의 차수성를 결정짓는 벤토나이트 팽윤재를 이용하여 증류수, 침출수, 바닷물 및 3% NaCl 용액등의 반응물에 대한 자유팽윤도를 측정하였으며 Poly(acrylic acid)와 PVA(Polyvinyl Alcohol), SCMC (Sodium Carboxymethyl Cellulose)를 각각 첨가한 벤토나이트의 자유팽윤도의 변화를 비교 평가하였다. 또한 바닷물에서의 토목섬유점토차수재의 투수계수를 측정하였으며 바닷물이 차수성에 어떤 영향을 미치는지 확인하였다. 벤토나이트의 평균 자유팽윤도는 증류수 > 침출수 > 바닷물 순으로 감소하였다. 바닷물에서와 3% NaCl 용액에서의 자유팽윤도 값은 근소한 수치를 보였다. Poly(acrylic acid)가 첨가된 벤토나이트는 모든 반응물에서 팽윤성 향상을 나타내었고 PVA가 첨가된 벤토나이트는 증류수를 제외한 반응물에서는 팽윤성 향상을 보이지 않았다. SCMC가 첨가된 벤토나이트의 팽윤성은 3% NaCl 용액에서 다소 자유팽윤도가 떨어지나 전반적으로 팽윤성이 향상되었다. 토목섬유점토차수재의 차수성은 증류수에 비해 바닷물의 경우 약 10³배 감소하였다.
In this study, free swell index of betonite was examined in several regeants; distilled water, leachate, seawater and 3% NaCl solution. It was known that liquid barrier property of Geosynthetic Clay Liners(GCL) was decreased when they were used in other reagents except distilled water. Free swell in...
In this study, free swell index of betonite was examined in several regeants; distilled water, leachate, seawater and 3% NaCl solution. It was known that liquid barrier property of Geosynthetic Clay Liners(GCL) was decreased when they were used in other reagents except distilled water. Free swell index values of bontonite to be added Poly(acrlylic acid), PVA(Polyvinyl Alcohol) or SCMC (Sodium Carboxymethyl Cellulose) were evaluated and compared. From this, it was confirmed that hydraulic conductivities of GCL in seawater were examined and the hydraulic conductivities of GCL in seawater were compared to those in distilled water. The average values of free swell indices of bentonite were decreased in order of distilled water > leachate > seawater. It was shown that no significant differences were occurred for free swell index between seawater and 3% NaCl solution. For bentonite to be added Poly(acrylic acid), free swell index values were increased and For bentonite to be added PVA, the other reagents except distilled water didn't affect increase of swelling. Swelling properties of bentonite to be added SCMC were improved except 3% NaCl solution. The hydraulic conductivities of GCL was increased about 10³ times in seawater than those in distilled water.
In this study, free swell index of betonite was examined in several regeants; distilled water, leachate, seawater and 3% NaCl solution. It was known that liquid barrier property of Geosynthetic Clay Liners(GCL) was decreased when they were used in other reagents except distilled water. Free swell index values of bontonite to be added Poly(acrlylic acid), PVA(Polyvinyl Alcohol) or SCMC (Sodium Carboxymethyl Cellulose) were evaluated and compared. From this, it was confirmed that hydraulic conductivities of GCL in seawater were examined and the hydraulic conductivities of GCL in seawater were compared to those in distilled water. The average values of free swell indices of bentonite were decreased in order of distilled water > leachate > seawater. It was shown that no significant differences were occurred for free swell index between seawater and 3% NaCl solution. For bentonite to be added Poly(acrylic acid), free swell index values were increased and For bentonite to be added PVA, the other reagents except distilled water didn't affect increase of swelling. Swelling properties of bentonite to be added SCMC were improved except 3% NaCl solution. The hydraulic conductivities of GCL was increased about 10³ times in seawater than those in distilled water.
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