Stabilisation of Goulburn Valley soils for the improvement of subgrades in new low traffic pavement construction

Abstract

Stabilisation is a technique that has been used to strengthen road pavement materials for many years in Australia. Stabilising the natural subgrade soils to create a subbase layer as part of new pavement construction in the Goulburn Valley region, is however, quite rare. This particular practice has been used in other areas of Australia and it is considered that a significant depth reduction to overlying granular pavement material may be achieved where stabilisation of the Goulburn Valley soils is incorporated into new pavement construction.