The management of dredged sediments poses serious environmental and economic problems because of their geochemical properties and in particular their pollutant content. In this research, marine sediments from Tunisian harbors were collected to study their beneficial reuse as construction materials using an eco-friendly polymer binder. Experimental investigations include the determination of physicochemical, mineralogical, and environmental parameters of sediments from the Sidi Mansour and Sidi Youssef areas in Tunisia. Prismatic mortar samples (4 × 4 × 16 cm) were prepared at laboratory scale using normalized sand and epoxy resin. Then their composition was modified by including a sediment fraction in the substitution of sand at rates ranging from 10 to 50% in dry mass. After a 7-day curing period, mortar samples were submitted to mechanical, physicochemical, and environmental analyses. Mortar samples including sediment fractions displayed lower strength than sand mortar used as control. This result is explained by the increase of porosity values in the mortar samples when sediment samples were incorporated. A positive relationship between porosity and compressive strength values was evidenced, suggesting that the compactness of granular skeleton could play an important role in the preparation of materials. From an environmental point of view, the mortar samples containing sediment fractions showed relatively low leaching levels, which confirms their suitability for the manufacturing of construction materials.

中文翻译：

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一种用于处理突尼斯港口沉积物的环保环氧聚合物粘合剂：有益再利用的实验室研究

由于疏浚沉积物的地球化学特性，特别是其污染物含量，疏浚沉积物的管理带来了严重的环境和经济问题。在这项研究中，收集了来自突尼斯港口的海洋沉积物，以研究它们使用环保聚合物粘合剂作为建筑材料的有益再利用。实验研究包括测定突尼斯 Sidi Mansour 和 Sidi Youssef 地区沉积物的物理化学、矿物学和环境参数。棱柱状砂浆样品（4 × 4 × 16 cm）是在实验室规模下使用标准砂和环氧树脂制备的。然后通过在干重的 10% 到 50% 的比率范围内加入沉积物部分来替代沙子，从而改变了它们的组成。经过 7 天的养护期后，砂浆样品提交给机械，物理化学和环境分析。包括沉积物部分的砂浆样品的强度低于用作对照的砂浆。这一结果可以通过掺入沉积物样品时砂浆样品中孔隙率值的增加来解释。孔隙率和抗压强度值之间存在正相关关系，表明颗粒骨架的致密性在材料制备中可能发挥重要作用。从环境的角度来看，含有沉积物部分的砂浆样品显示出相对较低的浸出水平，这证实了它们适用于制造建筑材料。这一结果可以通过掺入沉积物样品时砂浆样品中孔隙率值的增加来解释。孔隙率和抗压强度值之间存在正相关关系，表明颗粒骨架的致密性在材料制备中可能发挥重要作用。从环境的角度来看，含有沉积物部分的砂浆样品显示出相对较低的浸出水平，这证实了它们适用于制造建筑材料。这一结果可以通过掺入沉积物样品时砂浆样品中孔隙率值的增加来解释。孔隙率和抗压强度值之间存在正相关关系，表明颗粒骨架的致密性在材料制备中可能发挥重要作用。从环境的角度来看，含有沉积物部分的砂浆样品显示出相对较低的浸出水平，这证实了它们适用于制造建筑材料。