Experimental testing for Zarzis port sediments (Tunisia) in road materials

Abstract

This study focused on the feasibility of Tunisian sediment reuse as new road material. Experiments were conducted to investigate sediment reuse as road material. Three mixtures (raw sediments, stabilised sediments with 3% lime and stabilised sediments with 3% cement) were studied with regard to their mechanical performances. The first part of this paper introduces the characterisation of Zarzis sediments. The second part describes the laboratory experiments and the followed methods. The third part is dedicated to the analysis of results. The originality of this work is the use of a minimum percentage of lime, which was determined experimentally. Based on environmental tests, Zarzis sediments were uncontaminated. Thus, they can be reused directly without a decontamination treatment process. Results show that humic compounds complicated sediment treatment with cement. Therefore, cement did not present an appropriate binder for stabilising and solidifying the investigated sediments. Based on mechanical results, a mixture with 3% lime can be used as new road material.

An eco-friendly epoxy polymer binder for the treatment of Tunisian harbor sediments: Laboratory investigations for beneficial reuse

“…Recently, there has been a great deal of research published on the recovery of dredged sediments from Rades, Gabes, and Zarzis harbors in paving blocks (Bel Hadj Ali et al, 2014; Missaoui et al, 2016; Said et al, 2015; Zelleg et al, 2018). Unfortunately, numerous research studies have highlighted the weakness of the traditional hydraulic binder for the manufacturing of construction materials using dredged sediments.…”

Editorial

“…In the next paper, Zelleg et al (2018) studied the feasibility of Tunisian sediment reuse as a new road material. Three mixtures (raw sediments, stabilised sediments with 3% lime and stabilised sediments with 3% cement) were assessed with regard to their mechanical performances.…”