Soil-geogrid interaction in pullout conditions: influence of soil moisture content and density

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2015

Autores

Fernanda B. Ferreira (Autor) FEUP; David M. Carlos (Autor) FEUP; Castorina Silva Vieira (Autor) FEUP; Maria de Lurdes Lopes (Autor) FEUP

Ata de Conferência Internacional

Título: Proceedings of the XVI ECSMGE Geotechnical Engineering for Infrastructure and Development

Páginas: 1421-1426

XVI ECSMGE Geotechnical Engineering for Infrastructure and Development

Edinburgh, 13-17 September

Indexação

Scopus

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia civil > Geotecnia

FOS: Ciências da engenharia e tecnologias

Outras Informações

DOI: 10.1680/ecsmge.60678.vol3.206

Abstract (EN): Geosynthetics, including geogrids and geotextiles, have been extensively used for stabilisation and soil reinforcement in several geotechnical structures, such as foundations, abutments, walls and slopes. In these applications, soil-geosynthetic interaction plays a determinant role. This paper describes an experimental study carried out using a large-scale pullout test device aiming to investigate the interaction between a granite residual soil and a uniaxial extruded geogrid. To analyse the influence of soil moisture content on the interface behaviour, the soil was tested dry and at the optimum and half of the optimum moisture contents. To simulate distinct degrees of compaction in the field, the soil was compacted to different values of dry unit weight and its influence on the soil-geogrid interface behaviour was also evaluated. Test results have demonstrated that soil moisture content can significantly affect the geogrid pullout resistance, particularly when the soil is compacted with lower density. Furthermore, the failure mode at the interface (i.e., geogrid tensile failure or pullout failure) was found to be highly dependent on the soil density.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6