Valorisation of dredged marine sediments for use as road material

Abstract

The aim of this study is to investigate the suitability of using dredged marine sediments treated with a hydraulic binder in road construction works, particularly as a foundation layer. The methodology was conducted as follows. First, the geotechnical, chemical and mineralogical characteristics of the dredged sediments were determined to assess the behaviour of the materials. Second, the composition of the mixture was defined through a formulation study. In this phase of the study, the basic criteria for determining the dosage of each component of the mixture were specified. Third, the short-term and long-term mechanical behaviours of the formulation were evaluated. The experimental results show that dredged sediments treated with Portland cement can be used as a road foundation layer.

Keywords

• Waste valorisation
• Road construction materials
• Marine sediments
• Mechanical performance
• Hydraulic binder