ABSTRACT
ABSTRACT: This paper presents a study of the cyclic behaviour of a gravel emulsion, from an experimental pavement, using repeated load triaxial tests, developed for unbound granular materials. The material has been tested in three conditions: the gravel emulsion at early age and after a period of curing of 14 days at 35°C, and the granular material without bitumen emulsion. The study included monotonic triaxial tests, to determine the resistance to failure, and cyclic tests, to determine the resilient (elastic) behaviour. The results show that qualitatively, the behaviour of the gravel emulsion is similar to that of unbound granular materials, with a strongly non linear (stress dependent) resilient behaviour and a low resistance to rutting. A non linear elastic model is proposed to describe the resilient behaviour of the gravel emulsion. Finally, the laboratory results are compared with moduli measured in situ, using FWD tests.
