ABSTRACT
The regional road Administration had questioned the observance of Portuguese and Spanish road standard specifications for the local basaltic crushed materials, related to particle size distribution and to the utilization of the Modified Proctor test as the reference test to control field compaction, due to the possibility of not being strictly applied to volcanic aggregates such as basalts because of their greater insensitivity to moisture content variations. In addition, during the construction of the
1 INTRODUCTION
Continuous grading aggregates (CGA), from volcanic pyroclastic deposits or from mechanically or natural crushed volcanic rocks such as basalts or phonolites, are typically applied to the construction of road subgrades and unbound granular subbase and base courses in volcanic regions. This work focuses on an experimental study carried out in a local road in Azores (Portugal) related to the construction of an unbound base course with a basaltic crushed all-in aggregate.
