Experimental investigation on the pullout behaviour of geosynthetics embedded in a granite residual soil
| Autor: | Fernanda Bessa Ferreira, Castorina Silva Vieira, David Miranda Carlos, Maria de Lurdes Lopes |
|---|---|
| Přispěvatelé: | Faculdade de Engenharia |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Environmental Engineering
Materials science Deformation (mechanics) 0211 other engineering and technologies Geocomposite Engenharia civil Engenharia civil 02 engineering and technology Residual Geogrid 021105 building & construction Geotextile Geotechnical engineering Engenharia civil [Ciências da engenharia e tecnologias] Civil engineering Civil engineering Geosynthetics Composite material Civil engineering [Engineering and technology] Reinforcement 021101 geological & geomatics engineering Civil and Structural Engineering A determinant |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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