Título: | TILT TESTS AND DIRECT SHEAR ON SOIL-GEOSYNTHETIC INTERFACES | ||||||||||||||||||||||||||||||||||||
Autor: |
ALESSANDRA TAVARES DE CASTRO |
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Colaborador(es): |
ALBERTO DE SAMPAIO FERRAZ JARDIM SAYAO - Orientador ANNA LAURA LOPES DA SILVA NUNES - Coorientador |
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Catalogação: | 10/DEZ/2008 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||||||||||||||||||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=12570&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=12570&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.12570 | ||||||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||||||
The use of geosynthetics in geotechnical construction is
growing up intensively on the last years, which make the
study on interface strength more important and necessary to
its application on projects and construction.
Particularly, these studies should watch out field and
laboratory tests in order to obtain strength parameters
(adhesion and friction angle). Laboratory tests are more
frequently used, due to their accessibility and easy
execution. Field tests reproduce construction condition in
a directly way, but have as disadvantages high
cost and hard execution condition. The current research
have as objectives present the test equipment used and
analyze software results obtained for soil and geosynthetic
interfaces. The experimental program involved ramp tests,
conventional direct shear test and inclined direct shear
test. This program was carried out on gravel soil in contact
with two different types of geosynthetics (geomembrane and
geogrids). Results were analyzed based on the influence of
confining pressure and the introduction of geosynthetics,
and comparing the different materials and test
techniques. The confining pressure influence/importance was
studied based on three different low magnitude confining
pressures (1,0; 1,7 e 2,4kPa). The confining pressure
increases resulted in an increase of both displacements
until the failure and interface strength. This behavior
could be explained due to the possibility of interlocking e
between the gravel grains. Considering the geosynthetic
type, gravel-geogrid interface presented higher
strength than gravel- geomembrane interface. This could be
explained by the structure of the geosynthetic; geomembrane
has low strength due to its smooth surface, which benefits
the slide. Geogrid instead, counts with the soil
interlocking; effects in the mesh holes.
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