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Descripción
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| The use of polymers can change specific properties of natural soils. This study analyses the interaction of a natural fine sand, a clayey soil and anionic polyacrylamide (APAM). The laboratory results show that APAM, a superabsorbent polymer, increases the plasticity and the capacity of water absorption of a clay-APAM and a sand-clay-APAM compacted composite. Free swelling and swelling pressure also increase with addition of APAM. Sand-clay-APAM composite shows a higher uniaxial compressive strength and slight reduction of hydraulic conductivity. Microstructural analysis confirms the aggregation capacity of APAM and a reduction of the accumulated pore volume which minimise liquid infiltration and soil erosion. Results demonstrated that the clay-APAM and a sand-clay-APAM composites can be effective as liners and covers respectively in a landfill system. | |
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Internacional
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JCR del ISI
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Título de la revista
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Environmental Geotechnics |
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ISSN
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2051-803X |
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Factor de impacto JCR
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1,2 |
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Información de impacto
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Datos JCR del año 2017 |
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Volumen
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DOI
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10.1680/jenge.18.00174 |
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Número de revista
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