Artículos de revistas
Laboratory and in situ studies on a compacted clayey silt fill
Fecha
2012Registro en:
Procedings of the Institution of Civil Engineers-GeoTechnical Engineering, London, v. 165, n. 2, supl. 1, Part 3, pp. 107-119, APR, 2012
1353-2618
10.1680/geng.10.00050
Autor
Almeida, Marcio de Souza Soares de
Rios Filho, Marcelo G.
Futai, Marcos Massao
Riccio Filho, Mario
Institución
Resumen
This paper presents laboratory and in situ studies carried out on a 200 000 m(3) large clayey silt compacted embankment. Laboratory studies carried out on undeformed block samples included index tests, strength tests and water retention curves using the filter paper technique. Grain size analyses with and without a deflocculating agent clearly showed the existence of grain clusters, which appear to be naturally formed. Field instrumentation installed at depths from 0.25 m to 1.0 m included tensiometers, equitensiometers, time domain reflectometry and geothermometers. Pluviometer data from a nearby weather station are also used to analyse the field data. The ranges of water content and suction values were measured, both of which correlated well with the pluviometer data. The water retention curves including laboratory and field data showed a bimodal shape, consistent with the presence of microand macropores shown in the grain size analysis.