In the last decades, the amount of dredged sediments (DS) increased in France harbours. Dredged sediments consist of fine soil collected from the deepening, broadening and maintaining of public waterways. The present study reports the investigation of the beneficial reuse of dredged sediments collected from Le Havre (France) harbour as fired material for sustainability requirements. The main challenge is the use of untreated dredged sediments from land deposit of the Seine estuary and port areas as building material, especially for fired bricks manufacture. The chemical, mineralogical and particle size compositions of the raw material were assessed using X-ray fluorescence (XRF), X-ray diffraction (XRD) and laser particle sizer, respectively. The results indicate that the main oxide components are SiO₂ and CaO_3, while quartz and calcite are the main mineral phases. Lesser amounts of feldspar, chlorite, kaolinite, muscovite and halite were also determined. The physical properties of the raw clay material, including plasticity, organic content and salinity, were investigated in order to assess the product suitability as building material. Ceramic properties such as linear shrinkage, water absorption, bending strength and mineral neo-formations were also investigated in fired bricks at temperatures ranging from 700 to 1000 °C. A high mechanical strength has been obtained at a temperature of 900 °C. The use of ternary diagrams indicates that the raw material falls inside the industrial domain, and ceramic tests show that the raw material could be used in brick making because of its firing behaviour and mechanical resistance. As regards environment sustainability, chemical analysis reveals that the levels of metal traces from leaching tests remain low and within regulatory limits.

在过去的几十年中，法国港口的疏of沉积物（DS）数量增加。疏sediment的沉积物由从公共水道的加深，拓宽和维护中收集的细土组成。本研究报告了对从勒阿弗尔（法国）港口收集的疏sediment沉积物作为可燃材料进行可持续利用的有益再利用的调查。主要挑战是如何使用塞纳河河口和港口地区土地沉积物中未经处理的疏sediment沉积物作为建筑材料，特别是用于烧制砖。分别使用X射线荧光（XRF），X射线衍射（XRD）和激光粒度仪评估了原料的化学，矿物学和粒度组成。结果表明，主要氧化物组分为SiO ₂和CaO_{3 ，}石英和方解石是主要的矿物相。还测定了少量的长石，绿泥石，高岭石，白云母和石盐。为了评估产品作为建筑材料的适用性，研究了粘土原料的物理性质，包括可塑性，有机物含量和盐度。还研究了在700至1000°C范围内的烧结砖中的陶瓷性能，例如线性收缩，吸水率，弯曲强度和矿物新形成。在900°C的温度下获得了很高的机械强度。三元图的使用表明该原料属于工业领域，陶瓷测试表明该原料可用于制砖，因为它的烧成性能和机械抗力很高。