2017
DOI: 10.1016/j.cemconcomp.2017.06.006
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Carbonated MgO concrete with improved performance: The influence of temperature and hydration agent on hydration, carbonation and strength gain

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Cited by 141 publications
(71 citation statements)
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“…Even though the hydration of MgO may result in the formation of a phase that exhibits higher volume than that of the initial constituents, replacing a part of the cement will directly decrease the amount of C-S-H that is capable of producing a more tortuous and less interconnected porous network [37], especially after carbonation of the specimen [62,64]. However, lower total pore volume and water absorption would likely be observed over time with ensuing carbonation reactions and formation of additional magnesium carbonate hydrates [30,37,65].…”
Section: Water Absorption By Capillarymentioning
confidence: 99%
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“…Even though the hydration of MgO may result in the formation of a phase that exhibits higher volume than that of the initial constituents, replacing a part of the cement will directly decrease the amount of C-S-H that is capable of producing a more tortuous and less interconnected porous network [37], especially after carbonation of the specimen [62,64]. However, lower total pore volume and water absorption would likely be observed over time with ensuing carbonation reactions and formation of additional magnesium carbonate hydrates [30,37,65].…”
Section: Water Absorption By Capillarymentioning
confidence: 99%
“…Another practical feature of using reactive MgO-based cementitious composites is their ability to capture a considerable amount of CO 2 thereby further decreasing the material's environmental impact throughout its life cycle. Furthermore, the carbonation of brucite may result in phases (i.e., magnesium carbonate hydrates such as nesquehonite, hydromagnesite, dypingite, and artinite) capable of significantly increasing the strength of the matrix [29,30].…”
Section: Introductionmentioning
confidence: 99%
“…as expansive agents in mass construction) (Gao et al, 2008;Mo et al, 2014) since their hydration rate is lower than those of reactive MgO or Portland cement (PC). Alternatively, the use of reactive MgO in cement-based formulations does not create any potential late expansion problems due to its similar hydration rate to PC (Dung and Unluer, 2017a;Dung and Unluer, 2017b).…”
Section: Introductionmentioning
confidence: 99%
“…However, because the production of Portland cement will release a large amount of carbon dioxide (0.7–1.0 tons of carbon dioxide per ton of OPC), consume the excessive non-renewable mineral resources (limestone), and require higher calcination temperatures (1450 °C). Traditional Portland cement is leading to severe environmental, energy and resource problems during the production process [2] , [3] , [4] . Therefore, the development of sustainable alternative cementitious materials is an urgent need for sustainable development.…”
Section: Introductionmentioning
confidence: 99%