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Article Dans Une Revue Academic Journal of Civil Engineering Année : 2021

Valorisation of marine sediments with novel eco-friendly OPC-CSA composite binder

Résumé

As an eco-friendly binder, ordinary Portland and calcium sulfoaluminate (OPC-CSA) composite binder are innovatively introduced in the Stabilization/solidification (S/S) of dredged marine sediments waste from Dunkirk harbour in France. This study scrutinizes the feasibility of using OPC-CSA composite binder for the S/S treatment of marine sediments waste as road construction materials, in terms of a series of modified Proctor compaction, immediate Californian Bearing Ratio (I-CBR) index, unconfined compressive strength, splitting tensile strength, and elastic modulus tests. The obtained experimental results show that the compaction, bearing capacity and mechanical performance of the OPC-CSA composite binder solidified sediments is significantly improved, as compared with the raw sediments and OPC/CSA single binder treated sediments. These parameters are highly dependent on the ratio of OPC/CSA, binder content and curing time. Especially, OPC played a significant role in developing the final mechanic performance, while CSA mainly promotes early- mechanical properties development. Therefore, the lab-scale experiment demonstrates that OPC-CSA composite binder could be considered as a green and high-performance binder for the S/S treatment of marine sediments waste in comparison to OPC.
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Dates et versions

hal-04300589 , version 1 (22-11-2023)

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Citer

Hongwei Wang, R. Zentar. Valorisation of marine sediments with novel eco-friendly OPC-CSA composite binder. Academic Journal of Civil Engineering, 2021, ⟨10.26168/ajce.39.1.42⟩. ⟨hal-04300589⟩
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