Quantification of carbonated Mg-based cement pastes by Raman spectroscopy

Tangwei Mi, Xi Chen, En-Hua Yang, Cise Unluer (Lead / Corresponding author)

Research output: Contribution to journalArticlepeer-review

1 Downloads (Pure)

Abstract

This study presented a detailed investigation of the carbonation of reactive magnesia cement (RMC) and brucite cement by using Raman spectroscopy and other characterization techniques. Quantification of carbonation at different depths and formation of various reaction products in each system were demonstrated. Correlations between Raman peak intensities and carbonation degree were established by Raman mapping. Established correlations were employed to evaluate the carbonation behaviour of RMC and brucite cement. Results indicated the higher sensitivity of Raman spectroscopy than XRD in detecting different carbonation products at early stages. This information can be used to assess the strength and microstructural development of RMC and brucite cement since different HMCs have distinct properties and performance contributions, and their transformation plays a key role in microstructural and strength development. This study provided further understanding of the carbonation mechanisms of Mg-based systems, which could enable carbonation degree and performance prediction via the established correlations.

Original languageEnglish
Article number107454
Number of pages16
JournalCement and Concrete Research
Volume178
Early online date3 Feb 2024
DOIs
Publication statusPublished - Apr 2024

Keywords

  • Carbonation (C)
  • Characterization (B)
  • MgO (D)
  • Spectroscopy (B)
  • X-ray diffraction (B)

ASJC Scopus subject areas

  • Building and Construction
  • General Materials Science

Fingerprint

Dive into the research topics of 'Quantification of carbonated Mg-based cement pastes by Raman spectroscopy'. Together they form a unique fingerprint.

Cite this