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Influence of Activated Art Paper Sludge‐Lime Ratio on Hydration Kinetics and Mechanical Behavior in Mixtures Cured at 20°C
Author(s) -
Ferreiro Sergio,
Blasco Teresa,
Sánchez de Rojas M. Isabel,
Frías Moisés
Publication year - 2009
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2009.03334.x
Subject(s) - lime , kinetics , chemical engineering , differential thermal analysis , calcium silicate , magic angle spinning , materials science , hydrotalcite , chemistry , nuclear chemistry , mineralogy , diffraction , composite material , organic chemistry , metallurgy , nuclear magnetic resonance spectroscopy , physics , optics , quantum mechanics , engineering , catalysis
This research study shows for the first time the hydration reaction of Activated Art Paper Sludge (AAPS)‐lime mixtures cured at 20°C. Two mixtures series were prepared using weight ratios of 3:1 and 1:1 for AAPS/lime. The kinetics of the hydration reaction was investigated by characterization techniques such as X‐ray diffraction, thermo‐gravimetrical and differential thermal analysis, 27 Al and 29 Si { 1 H} magic angle spinning nuclear magnetic resonance. Results show higher quantity of hydrated phases formed with the increase of the AAPS/lime ratio (such as calcium silicates hydrates (C–S–H), hydrated tetracalcium monocarboaluminate, and hydrotalcite‐like phases), specially C–S–H exhibiting a major incorporation of Al 3+ into silicate chains, increasing its medium chain length. It becomes demonstrated that mechanical performance of the studied mixtures will be directly influenced by all these parameters.