This paper presents the results of direct shear tests to study the interaction between soils and geosynthetics and to evaluate interface frictional parameters between geosynthetics and fine grained soils and between different types of Brazilian geosynthetics. Friction reducing materials commonly present in soils were mixed to the soils used in the tests in order to verify their influence on the interface parameters. A comprehensive literature survey on soils-geosynthetics and geosynthetics-geosynthetics interface parameters is also presented and discussed. The analysis of the test results and data available suggests that, despite the construction limitations and pore pressure generation associated with fine soils in geotechnical works, these soils can present satisfactory degrees of interaction with some geosynthetics when the interface is sheared under drained conditions. It was also observed a marked influence of the non-woven geotextile distortion on the stiffness of the interface. The geosynthetics-geosynthetics interface parameters can present a large scatter depending on the geosynthetics tested and can be dependent of factors such as the presence of dust, which is impossible to avoid in real works.
|Translated title of the contribution||A study of the adherence between geosynthetics and fine grained soils and between different types of geosynthetics|
|Number of pages||11|
|Journal||Solos e Rochas|
|State||Published - 1995|