Road geotechnics has considerably extended its scope of activity over the past few years. This is due to the cosideration given to environmental preservation and sustainable development, and to the ensuing legal obligation to be careful in general with the available natural resources left and to optimize soil use in road earthworks.
Making valuable use of local – including marginal – materials excavated during earthworks is currently a major concern (see PIARC report 1201R37 on “Innovative approaches towards the use of locally available natural marginal materials”).
A prenormative research project for the determination of the mechanical performance characteristics of soils treated with cementitious road binders started on 1st September 2009. The second two-year period of this project, which was funded by the Belgian Federal Service “Economy”, expired on 31st December 2013. In this context BRRC purchased equipment for the splitting tensile strength (also called the “Brazilian”) test. With this test it is possible to determine the tensile strength and the elastic modulus of stabilized soils.