Development of a geosynthetic pullout test apparatus with transparent granular soil

F. Ezzein, R.J. Bathurst

Dans les comptes rendus d’articles de la conférence: GEO2011: 64th Canadian Geotechnical Conference, 14th Pan-American Conference on Soil Mechanics and Geotechnical Engineering, 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering

Session: Laboratory Testing

ABSTRACT: The paper describes the development of a transparent granular soil, pullout box apparatus and test methodology that can be used to investigate soil-geosynthetic interaction during pullout. The transparent soil is made of fused quartz particles in combination with a transparent fluid with the same refractive index. The pullout box has a glass bottom and the transparent granular soil allows photographs of the embedded geosynthetic specimen to be taken during the test. In this paper, image analysis is then performed on the photographs using the particle imaging velocimetry (PIV) technique. Axial displacements and strains are computed at locations along the length of a geogrid pullout specimen. These measurements are shown to provide quantitative insight into reinforcement-soil load transfer.

RÉSUMÉ: -géosynthétique transparent est composé de particules de quartz fondu combiné à un liquide transparent ayant le même indice de du démontrée en calculaentre le sol et la géogrille.

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