The Improvement of the RCC Compactness and Strength for Pavement by the Use of the Marine Sediments of La-Goulette Harbor (Tunisia)
摘要
The Roller Compacted Concrete (RCC) for pavement is presented as an evolutionary technology in which various types of aggregates are classically used, such as the crushed and the rolled either limestone or siliceous aggregates. The present work comported the study of the use of the marine sediments, in preparing RCC for pavement, as aggregates resulting from dredging of the La Goulette harbor (Tunisia). This approach allows a profit from their contributions to the improvement of the mechanical strengths of the RCC. This study is based on the valorization of the marine sediments, classified as waste and where their storages remain harmful for the environment. Compressive Packing Model (CPM) was used for the formulation of the RCC mixtures. This study also included a mechanical characterization of the material, demonstrating that the use of marine sediments offers significant physical and economic advantages for RCC. The higher compactness and the mechanical strengths, obtained, showed the profitability of such RCC containing sediments.