Artículo
Preliminary results of polymer-enhanced soil mixtures for potential use as covers or liners in landfill systems
Fecha de publicación:
08/2019
Editorial:
Institution of Civil Engineers
Revista:
Environmental Geotechnics
e-ISSN:
2051-803X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
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.
Palabras clave:
Polymer
,
Bentonite
,
Landfils
,
Polyacrylamide
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Piqué, Teresa María; Manzanal, Diego; Codevilla, Mauro; Orlandi, Sandra; Preliminary results of polymer-enhanced soil mixtures for potential use as covers or liners in landfill systems; Institution of Civil Engineers; Environmental Geotechnics; 8; 7; 8-2019; 467-479
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