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Study of the unbound crushed materials behaviour in road pavements
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Orientador(es)
Resumo(s)
The crushed materials of extended grading are highly applicable in the unbounded granular layers
of road pavements, namely in granular subbase and base. The behaviour of those materials in layers of
pavements, in spite of some studies already developed on that matter, is not yet characterized enough, especially
for reasons of heterogeneity of the rock masses from which they come. In the attempt to contribute to a
better knowledge of that behaviour a work is being developed, which main objective is the mechanical
characterization and the elaboration of typical models of behaviour for crushed materials of several
lithologies, susceptible of being used on that kind of layers. This communication describes the results
obtained until now, only for one of the types of studied material, the limestone. Essentially, the paper gives
the geotechnical characterization of the material and makes it possible to evaluate which is the range of
variation of the resilient modulus obtained in cyclic tri-axial tests. Finally, is displayed the summary of the
work that is still expect to be develop.
Descrição
Palavras-chave
Base Cyclic tri-axial test Granular layers Pavement Sub-base Unbound crushed materials
Contexto Educativo
Citação
LUZIA, R. C.; PICADO-SANTOS, L. (2004) - Study of the unbound crushed materials behaviour in road pavements. In International Conference on Cyclic Behaviour of Soils and Liquefaction Phenomena, Bochum, 31 Março - 2 Abril – Proceedings: [S. l.]: A. A. Balkema. p. 167-172