LUZIA, Rosa; PICADO-SANTOS, Luis; PEREIRA, Paulo - Mechanical behaviour of two crushed materials used in portuguese UGL.In European Conference on Pavement and Asset Management, 3, Coimbra, 7-9 Julho 2008. Coimbra: Universidade de Coimbra, 2008 p. 1-10
Title
Mechanical behaviour of two crushed materials used in portuguese UGL
The crushed materials of extensive granulometry (UGM) are often used as unbound
granular layers of road pavements, namely as granular sub-base and base. The behaviour of
these materials on pavement layers is not sufficiently characterized, in spite of several
studies already performed on this matter, due to reasons connected to the heterogeneity of
the rock masses from which they come from. This has special importance for the
Portuguese pavement technology. In the attempt of contributing for a better knowledge of
that behaviour, a work was developed with the objective of obtaining the mechanical
characterization and the establishment of behaviour models for crushed materials coming
from different lithologies, namely limestone and granite, susceptible of being used as
UGM. This paper describes the principal results obtained from this work and points out the
main directives that can be extracted from it, in terms of the global behaviour of a road pavement.
