Structural changes in sodium carbonate activated slag binders induced by CO2 exposure.

Published on Jan 1, 2019
· DOI :10.13039/501100000781
Maria Criado27
Estimated H-index: 27
,
Xinyuan Ke10
Estimated H-index: 10
+ 1 AuthorsSusan A. Bernal55
Estimated H-index: 55
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Abstract
Trabajo presentado a la 39th Cement and Concrete Science Conference, celebrada en la Universidad de Bath (UK) del 9 al 10 de septiembre de 2019.
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#1Adeyemi Adesina (U of W: University of Windsor)H-Index: 17
Abstract The production of Portland cement (PC) which is the main binder in conventional cementitious materials contributes about 7% to the world’s anthropogenic carbon dioxide emission. As the demand for PC is expected to increase significantly in the coming years, it is imperative to find other environmentally friendly alternatives. Alkali-activated binders (AABs) obtained by alkali activation of aluminosilicate precursors are viable alternatives for PC as they possess lower embodied carbon an...
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#1Xinyuan Ke (University of Bath)H-Index: 10
#2Susan A. Bernal (University of Leeds)H-Index: 55
Last. Barbara Lothenbach (Empa: Swiss Federal Laboratories for Materials Science and Technology)H-Index: 78
view all 4 authors...
Abstract Carbonation of cementitious materials induced by their interaction with atmospheric CO2 is one of the main degradation mechanisms threatening their durability. In this study, a novel thermodynamic model to predict the phase evolution of alkali-activated slags exposed to an accelerated carbonation environment is presented. This model predicts the phase assemblages of carbonated alkali-activated slag cements, as a function of CO2 uptake under 1 v/v % CO2 conditions, considering the bulk s...
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