A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Sequestration of CO2 in reactive MgO cement-based mixes with enhanced hydration mechanisms
HighlightsThe low hydration of MgO limits its carbonation and associated strength gain.(CH3COO)2Mg (MA), MgCl2 and HCl were used as hydration agents (HAs) of MgO.The use of HAs improved CO2 sequestration and mechanical properties of MgO mixes.Mixes incorporating MA outperformed all others in terms of carbonation and strength.MA mixes led to 107% and 53% higher strengths than MgO and PC samples, respectively.
AbstractStrength development of reactive MgO cement-based concrete is limited by the low hydration and carbonation of MgO. This study aims to improve the hydration and mechanical performance of carbonated MgO mixes with the introduction of various hydration agents (HAs) at different concentrations. Influence of these HAs on the hydration and carbonation mechanisms under ambient and accelerated curing conditions was evaluated through isothermal calorimetry, TG, XRD and FTIR analyses. Introduction of HAs enabled extensive carbonation and strength development reaching up to ∼60MPa at 28days, which was 107% and 53% higher than the corresponding MgO and PC-based control mixes, respectively.
Sequestration of CO2 in reactive MgO cement-based mixes with enhanced hydration mechanisms
HighlightsThe low hydration of MgO limits its carbonation and associated strength gain.(CH3COO)2Mg (MA), MgCl2 and HCl were used as hydration agents (HAs) of MgO.The use of HAs improved CO2 sequestration and mechanical properties of MgO mixes.Mixes incorporating MA outperformed all others in terms of carbonation and strength.MA mixes led to 107% and 53% higher strengths than MgO and PC samples, respectively.
AbstractStrength development of reactive MgO cement-based concrete is limited by the low hydration and carbonation of MgO. This study aims to improve the hydration and mechanical performance of carbonated MgO mixes with the introduction of various hydration agents (HAs) at different concentrations. Influence of these HAs on the hydration and carbonation mechanisms under ambient and accelerated curing conditions was evaluated through isothermal calorimetry, TG, XRD and FTIR analyses. Introduction of HAs enabled extensive carbonation and strength development reaching up to ∼60MPa at 28days, which was 107% and 53% higher than the corresponding MgO and PC-based control mixes, respectively.
Sequestration of CO2 in reactive MgO cement-based mixes with enhanced hydration mechanisms
Dung, N.T. (author) / Unluer, C. (author)
Construction and Building Materials ; 143 ; 71-82
2017-03-06
12 pages
Article (Journal)
Electronic Resource
English
Sequestration of CO2 in reactive MgO cement-based mixes with enhanced hydration mechanisms
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