Recent advances in magnesium-based materials: CO2 sequestration and utilization, mechanical properties and environmental impact

Dan Meng, Cise Unluer, En-Hua Yang, Shunzhi Qian

Research output: Contribution to journalArticlepeer-review

Abstract

Cement industry is one of the main sources of greenhouse gases, which accounts for about 7% of global CO 2 emissions. Sequestration of CO 2 in cement-based materials is regarded as an effective alternative since it can convert CO 2 into stable carbonates with relatively low additional energy consumption. This paper presents a comprehensive review on recent research and advances on carbon sequestration in magnesium-based binders with a focus on reactive MgO cement (RMC) and magnesium oxychloride cement (MOC). The carbon sequestration mechanism, the influence of carbonation on mechanical performance, and key parameters that control the carbonation process are summarized. In addition, a quantitative analysis of carbon sequestration in RMC-based materials is presented, demonstrating the effectiveness of offsetting carbon emissions via the use of alternative binder systems. Furthermore, a comparison of the environmental impact of Portland cement, RMC and MOC production is provided, emphasizing the need for enhancing the sustainability of cement production procedures. Overall, this paper presents a roadmap for emerging carbonation techniques that improve the mechanical performance and sustainability of magnesium-based binders.

Original languageEnglish
Article number104983
JournalCement and Concrete Composites
Volume138
Early online date10 Feb 2023
DOIs
Publication statusPublished - 1 Apr 2023

Keywords

  • Carbon sequestration
  • Carbonation curing
  • Magnesium oxychloride cement
  • Performance
  • Reactive MgO cement

Fingerprint

Dive into the research topics of 'Recent advances in magnesium-based materials: CO2 sequestration and utilization, mechanical properties and environmental impact'. Together they form a unique fingerprint.

Cite this