Chemical changes and phase analysis of OPC pastes carbonated at different CO2 concentrations

By M. Castellote, L. Fernández, C. Andrade, C. Alonso. 2009

435 citations recorded by the source corpus.

Subfields: Civil and Structural Engineering, Inorganic Chemistry, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/e352cdc4307cbced5d016e613f821e77ba6413f5

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In Civil and Structural Engineering

In Inorganic Chemistry

In Materials Chemistry

Citations in the corpus

Investigation of the carbonation mechanism of \{CH\} and C-S-H in terms of kinetics, microstructure changes and moisture properties (2014, background): “Moreover, ettringite can still be observed for moderate CO2 concentration [3] whereas it seem to disappear if CO2 > 10% [3, 14].”
Carbonation of cement paste : Understanding, challenges, and opportunities (2016, background): “Inset shows a diffraction pattern focused on the disordered area indicated by the arrow The degree of carbonation of C-S-H gel also depends on the CO2 concentration and environmental conditions [31, 43].”
Carbonation of concrete: the role of CO2 concentration, relative humidity and CO2 buffer capacity (2016, background): “calcium–silicate–hydrate (C–S–H) is decalcified leading to a phase with a lower Ca/Si-ratio [14, 18, 20, 22].”
Carbonation behavior of hydraulic and non-hydraulic calcium silicates: potential of utilizing low-lime calcium silicates in cement-based materials (2016, result): “Formation of this phase during the carbonation of OPC concrete and C3S pastes has also been reported in some other researches [40, 70].”
Impact of accelerated carbonation on OPC cement paste blended with fly ash (2015, methodology): “Using a hydration model and a global molar calcium balance (TGA), makes it possible to calculate a macroscopic C S ratio [62] as a function of the calcium carbonate content produced by C-S-H carbonation n CC and the initial calcium content in the C-S-H n Ca (t0) (see Eq.”
Effect of silicate modulus and metakaolin incorporation on the carbonation of alkali silicate-activated slags (2010, methodology): “the same was not true for CO2 concentrations of 10% or higher [8].”
Carbonation of hardened cement pastes: Influence of temperature (2019, background): “It must be noted that accelerated carbonation using 50% CO2 is known to be unduly aggressive and not representative of natural carbonation in terms of the consequences [51].”