The most important raw materials for the building industry are natural quarried rocks. Preservation of this non-renewable resource needs valorizing products, the vast majority of which is currently considered as waste. Among these, dredged sediments have gained much attention and should play a key role in non-renewable natural resource preservation.

The aim of this paper is to achieve a resource-efficient evaluation for the re-use of fine-grained dredged sediments in the heavy clay industry by investigating relationship between sediment provenance and industrial properties. 86 spot samples from French dam reservoirs and estuaries were studied, focusing on grain-size and mineralogy. Industrial technological tests were performed on 53 samples representative of varied lithological sources. Following PCA analysis, source fingerprinting in four categories is proposed, allowing for direct evaluation of sediment for brick-tile making. Best technological scores, close to industrial values, were obtained for source category (3) mixture of sedimentary, plutonic and metamorphic rocks and low scores for two source categories, (1) sedimentary rocks (high carbonate content), (2) plutonic and metamorphic rocks (lack melting compound). Extrusion failed for samples from category (4) plutonic or metamorphic rocks (lack clay minerals). Consistency between PCA fingerprinting categories, MIF (Mineralogical Industrial Framework) and technological tests shows that even though the sediment source classification is simplified, it constitutes a reference to predict the recovery of dredged sediment for tile or brick making. Insights from this study can be particularly useful to the heavy clay industry managers when making decision regarding the fossil resource preservation by substitution with dredged sediments.

建筑业最重要的原材料是天然采石场。保护这种不可再生资源需要使产品增值，目前绝大多数产品被视为废物。其中，疏sediment的沉积物引起了广泛关注，应在不可再生的自然资源保护中发挥关键作用。

本文的目的是通过研究沉积物来源与工业性质之间的关系，来实现对重质粘土行业中细颗粒疏sediment沉积物的再利用的资源效率评估。对法国大坝水库和河口的86个现场样本进行了研究，重点是粒度和矿物学。对代表各种岩性来源的53个样品进行了工业技术测试。经过PCA分析，提出了四类源指纹识别技术，可以直接评估用于砖瓦制造的沉积物。震源类别（3）沉积，深成岩和变质岩的混合物获得了接近工业价值的最佳技术得分，而两个震源类别（1）沉积岩（碳酸盐含量高），（2）深成岩和变质岩（缺乏熔化的化合物）。对于来自第（4）类深成岩或变质岩（缺乏粘土矿物）的样品，挤出失败。PCA指纹分类，MIF（矿物学工业框架）与技术测试之间的一致性表明，即使简化了沉积物来源分类，它仍可作为预测用于瓷砖或砖块制造的疏sediment沉积物回收的参考。这项研究的见解对于重型粘土行业的管理者在决定用挖出的沉积物替代来保存化石资源的决策时特别有用。MIF（矿物学工业框架）和技术测试表明，即使沉积物来源分类得到简化，它仍可作为预测用于瓷砖或砖块的疏sediment沉积物回收的参考。这项研究的见解对于重型粘土行业的管理者在决定用挖出的沉积物替代来保存化石资源的决策时特别有用。MIF（矿物学工业框架）和技术测试表明，即使沉积物来源分类得到简化，它仍可作为预测用于瓷砖或砖块的疏sediment沉积物回收的参考。这项研究的见解对于重型粘土行业的管理者在决定用挖出的沉积物替代来保存化石资源的决策时特别有用。