Long-term leaching test in concretes: An X-ray powder diffraction study

Stabilization and solidification of Pb in cement matrices

“…Fig. 2 shows that the loss of water in the sample water-cement-Pb is practically the same when compared to sample constituted of water-cement (0.08 versus 0.04%), being agreement with data reported in the literature [33][34][35]. Such results suggest that the presence of Pb did not afford retention of water within the matrix.…”

Investigation of the changes in microstructure and transport properties of leached cement pastes accounting for mix composition

“…Note that the intense peaks for calcite in reference and leached samples S2L, S4L, and S5L are due to the limestone filler addition. Similar to leaching in deionized water [49,50], no new crystalline phases were observed. This underpins the statement that leaching in ammonium nitrate results in same end-products (solid phases), as obtained for "natural" leaching processes.…”

Rietveld Quantitative Phase Analysis of OPC Clinkers, Cements and Hydration Products

“…A key use is to determine the time-evolution of portlandite from RQPA and DTA-TGA measurements (Scrivener et al 2004;Puertas et al 2010). Furthermore, DTA-TGA and RQPA have been carried out to monitor the long-term hydration behavior of cement monoliths containing organic waste (Leoni et al 2007), and to investigate long-term leaching in concretes (Marinoni et al 2008).…”