João Coroado

TL;DR: In this article, the mineralogical transformations during firing of two extremely calcareous clays, one calcite and other dolomite rich, and relatively poor in silica were studied.

TL;DR: In this article, the authors measured mineralogical transformations of different types of clays obtained during experimental firing runs, carried out at different temperatures, with the main goal of establishing Algarve reference groups based on the composition of raw material and high-temperature mineralogy, which may be compared with ceramics in studies of provenance.

TL;DR: The need for the formulation of mortars for repair of ancient Roman renders in the archaeological site of Conimbriga brought about the need for a study of the rendering solutions existent therein this paper.

TL;DR: In this paper, the potential of chicken eggshell waste to produce calcitic lime was explored, and the results showed that the most reactive class of calcium oxides from eggshells was R5-60°C within 10min, the same as that of calcium oxide from limestone.

TL;DR: In this article, a set of six groups of Portuguese paintings were examined by optical microscopy and micro-confocal Raman and Raman spectroscopic mapping imaged the location of different compounds in the cross-section.