Experimental investigation on the pullout behaviour of geosynthetics embedded in a granite residual soil

• Type: Article in International Scientific Journal
• Date: 2016

Authors

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

Journal

Title: European Journal of Environmental and Civil Engineering

Vol. 20

Pages: 1147-1180

ISSN: 1964-8189

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 29 Citations

ISI Web of Science

Scopus - 33 Citations

Scientific classification

FOS: Engineering and technology > Civil engineering

CORDIS: Technological sciences > Engineering > Civil engineering

Other information

Authenticus ID: P-00K-TJ0

DOI: 10.1080/19648189.2015.1090927

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 apparatus, aiming to investigate the pullout behaviour of different geosynthetics embedded in a granite residual soil. The study involved two geogrids (one biaxial and the other uniaxial), one geocomposite reinforcement (high-strength geotextile) and one geotextile. The soil was compacted to different relative densities. Test results have revealed that soil-geosynthetic interaction under pullout loading conditions is highly influenced by the geosynthetic properties and soil density. Regardless of soil density, the biaxial geogrid exhibited higher pullout resistance than the other geosynthetics. At maximum pullout force, the deformation along the length of the geotextiles was considerably more pronounced than that along the geogrids. For the conditions adopted in this study, the soil-geosynthetic pullout interaction coefficients ranged from .25 to .52. In general, the values of the scale effect correction factor obtained for the geotextiles were slightly lower than the value recommended by the Federal Highway Administration in the absence of test data.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 34