GEOCIÊNCIAS
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Percorrer GEOCIÊNCIAS por Domínios Científicos e Tecnológicos (FOS) "Engenharia e Tecnologia::Engenharia dos Materiais"
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- The materials of historical monuments: characterisation of the mortars of the Roman aqueduct of Zaghouan-CarthagePublication . Carvalho, Fernanda; Lima, Maria Margarida Rolim Augusto; Silva, Teresa; Veiga, João PedroABSTRACT: The Zaghouan-Carthage Roman aqueduct was the largest built by the Roman Empire at the time, and its archaeological remains bear witness to the excellence of Roman construction. Its importance over the centuries makes it a unique case study for characterising the different types of mortar used. This work aims to study these materials, considering their functions, especially as structural elements or as render, to relate the chemical and mineralogical characteristics observed to both the function and historical context of the monument. Using a multi-analytical approach, the preservation of samples was prioritised whenever possible. The results indicate that mortars with a structural function have higher silicon contents than those used as render. In the case of water conduit coatings, the mortars were formulated with ground ceramics to develop hydraulic properties and ensure the waterproofing material. However, it was not possible to identify a characteristic pattern related to the historical construction periods.
- Mineralogical and Geochemical Characterization of Geological MaterialsPublication . Silva, Teresa; de Oliveira, Daniel Pipa Soares; Veiga, João PedroABSTRACT: The following Special Issue compiles original research on the mineralogical, geochemical, and microstructural characterisation of natural and anthropogenic materials. Topics span the weathering and long-term durability of sedimentary rocks, copper mineralisation processes, and archaeometric provenance studies to advanced analytical methods for mortar characterisation, heavy mineral analysis, and polymetallic ore exploration. Contributions highlight innovations in neutron imaging, SEM-based fast elemental mapping, quantitative XRD, and adsorption studies on clay minerals. Emphasis is placed on the scientific understanding of mineral transformations, the sustainable use of geological resources, heritage conservation, and the recycling potential of mining waste. By combining traditional petrography with emerging machine learning and supervised classification approaches, the papers demonstrate how mineralogical research is becoming increasingly interdisciplinary, supporting geology, archaeology, environmental sciences, and resource management. This reprint provides a valuable reference for researchers across Earth and material sciences.