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From dredged sediment to supplementary cementitious material: characterization, treatment, and reuse
International Journal of Sediment Research ( IF 3.5 ) Pub Date : 2020-06-08 , DOI: 10.1016/j.ijsrc.2020.06.002
Mouhamadou Amar , Mahfoud Benzerzour , Joelle Kleib , Nor-Edine Abriak

Nowadays, the preservation of natural resources, the reuse, and the recycling of waste and by-products in the cement industry are gaining increasing attention in a sustainable development project. In this perspective, many studies focus on finding solutions in order to propose environmentally friendly materials. Nowadays the sediments represent a way to preserve the natural resources by their reuse as a secondary raw material in multiple applications (concrete, roads, landscaped mound, etc.). However, they commonly contain contaminants, organic matter (5%–30%), high water content (50%–200%), and relatively small particle size (Dmax ≤ 300 μm). Therefore to improve the mechanical properties of this material as well as its physiochemical ones, specific methods of characterization and appropriate treatment techniques (calcination, chemical treatment, etc.) are required. This article presents a bibliographical review of the efficient use of sediments in cementitious matrix. It details experimental tests that must be performed to ensure the durability of sediment-based structure and assess their environmental impact under prescribed conditions.



中文翻译:

从疏sediment的沉积物到辅助胶结材料:表征,处理和再利用

如今,水泥工业中自然资源的保护,再利用以及废物和副产品的循环利用在可持续发展项目中越来越受到关注。从这个角度出发,许多研究集中于寻找解决方案以提出环保材料。如今,沉积物代表着一种自然资源的保护方式,可以将其作为多种应用(混凝土,道路,园林丘陵等)中的次要原料再利用。但是,它们通常包含污染物,有机物(5%–30%),高水含量(50%–200%)和相对较小的粒径(Dmax≤300μm)。因此,为了改善这种材料及其物理化学性能的机械性能,特定的表征方法和适当的处理技术(煅烧,化学处理,等)。本文介绍了水泥基中沉积物的有效利用的书目综述。它详细介绍了必须执行的实验测试,以确保基于沉积物的结构的耐久性并评估其在规定条件下的环境影响。

更新日期:2020-06-08
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