Analysis of Soil-Geosynthetic Interfaces Shear Strength Through Direct Shear Tests

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2013

Autores

Fernanda Ferreira (Autor) FEUP; Castorina Silva Vieira (Autor) FEUP; Maria de Lurdes Lopes (Autor) FEUP

Ata de Conferência Internacional

Título: DESIGN AND PRACTICE OF GEOSYNTHETIC-REINFORCED SOIL STRUCTURES

Páginas: 44-53

International Symposium on Design and Practice of Geosynthetic-Reinforced Soil Structures / 26th Italian National Conference on Geosynthetics

Bologna, ITALY, OCT 14-16, 2013

Indexação

ISI Proceedings

ISI Web of Knowledge - 7 Citações

Scopus - 11 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia civil

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia civil

Outras Informações

ID Authenticus: P-008-WGA

Abstract (EN): This paper describes an experimental study carried out in a large scale direct shear apparatus to evaluate the behaviour of several soil-geosynthetic interfaces. To assess the influence of soil type on soil-geosynthetic interfaces shear strength, two soils with different characteristics were employed: a clean poorly graded sand and a well graded residual soil from granite, typical of northern Portugal. In addition to soil type, other parameters with influence on the interfaces shear strength were analysed, namely, the soil relative density and the geosynthetic type. Therefore, direct shear tests were performed for different values of soil relative density, using two distinct geosynthetics with the same nominal tensile strength: a biaxial woven geogrid and a uniaxial geocomposite reinforcement. For the different interfaces and test conditions, the curves shear stress versus shear displacement are presented and discussed, taking into account the peak and large displacement shear strength of the interfaces. The shear strength envelopes are analysed regarding the interface friction angle and the apparent cohesion. The interface shear strength coefficients are obtained and compared for the different experimental conditions.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10