Título: | MECHANICAL BEHAVIOR OF ASPHALT MIXTURES REINFORCED WITH GEOGRID FOR FLEXIBLE PAVEMENTS | ||||||||||||||||||||||||||||||||||||
Autor: |
GERSON ALVES BASTOS |
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Colaborador(es): |
MICHELE DAL TOE CASAGRANDE - Orientador LAURA MARIA GORETTI DA MOTTA - Coorientador |
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Catalogação: | 26/NOV/2010 | 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=16585&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=16585&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.16585 | ||||||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||||||
The objective of this study was to evaluate the mechanical behavior of geogrid
reinforced asphalt mixtures. Initially tests were planned to be executed on a physical
model, however, this tests had to be stopped due to structural problems. Samples were
extracted from the physical model and samples were shaped through gyratory
compaction, both for analyze the mechanical laboratory tests. Tensile Resistance
(Brazilian Test), Resilient Modulus, Fatigue (controlled load) and Disk-Shaped Compact
Tension Geometry Tests were carried out in extracted and shaped samples, without
reinforcement and with the reinforcement of two geogrid types (fiberglass and polyester).
The reinforcement improved the mechanical behavior of asphalt mixtures, with the trend
of greater resistance to fracture, and this was evidenced by Disk-Shaped Compact
Tension Geometry Tests, where the final criterion of the test was not reached (reduction
of the applied load of 0.10 kN). The influence of geogrid is better for lower applied stress
levels according with the Fatigue Tests. This condition allows the geogrid to deform for a
long period, witch is essential for the performance as an element for delay crack
propagation. There was a significant improvement in the results obtained with the
reinforced samples, for both geogrids studied, but the polyester geogrid reached better
results when compared to fiberglass geogrid.
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