articleCement and Concrete ResearchJan 17, 2025HYBRID OA

Effects of varying grades/pretreatments of recycled aggregates on the development of pore structures and ITZs within reactive magnesia cement (RMC) concrete

YSYufeng SongJWJiaze WangYHYinjie HuangJWJiawen WangYWYitian Weng

Zhejiang University of Technology · Zhejiang University

Indexed incrossref

Abstract

This study explores the influence of incorporating recycled aggregate (RA) and CO 2 -pretreated recycled aggregate (CRA) in reactive magnesia concrete (RMC) formulations. Through comprehensive microscopic characterizations, the phase composition, carbonation degree, pore structure , and interfacial transition zone (ITZ) characteristics are examined in both interior and exterior regions of specimens. The findings highlight that RA and CRA contribute to a 28 d strength in RMC formulations 14% and 25% higher than that with NA, respectively. This enhancement is attributed to internal curing and significantly increased channels for CO 2 diffusion within (C)RA specimens, leading to improvements in the modulus,…

Citation impact

53
total citations
FWCI
21.41
Percentile
100%
References
80
Citations per year

Authors

8

Topics & keywords

Topics
Keywords
  • Cement
  • Materials science
  • Composite material
  • Magnesium
  • Metallurgy
No related works found for this paper.

Funding