Cited by 3Phase Change Materials ResearchSmart Materials for ConstructionConcrete Properties and Behavior

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Development of Thermally Enhanced Cementitious Materials with Microencapsulated PCM for Railway Infrastructure

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Ji, Koochul, Wi, Sanghwon, Jun, Heejung, Suh, Jung-Il, Song, Haemin, Yoon, Jinyoung·2025·International Journal of Concrete Structures and Materials

Abstract

This study presents the development and pilot application of cementitious materials incorporating microencapsulated phase change materials (PCMs) for thermal regulation in rubber-tired Automated Guideway Transit (AGT) systems. Unlike previous PCM studies limited to buildings, this work demonstrates their first use in railway infrastructure. Material tests confirmed that PCM incorporation increased water and superplasticizer demand and reduced compressive strength, with up to a 36.7% loss at 30% replacement. Despite this trade-off, DSC and dynamic heat flow tests showed stable phase-change behavior and a significant heat-buffering effect, delaying internal temperature rise from 20 to 40 °C by up to 80 min. A pilot-scale test section of the K-AGT system was prepared, in which PCM-incorporated concrete was cast only at the top surface in contact with the wheels. This preliminary field application, the first of its kind in railway infrastructure, demonstrated the feasibility of the localized use of PCM-enhanced materials for addressing heat accumulation.

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References 31 · Cited by 3

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Metadata

Authors
Ji, K., Wi, S., Jun, H., Suh, J.-I., Song, H., & Yoon, J.
Affiliations
  • Korea Railroad Research Institute (KR)
  • Konkuk University (KR)
  • Korea Institute of Ceramic Engineering and Technology (KR)
Corresponding author
Yoon, Jinyoung
Venue
International Journal of Concrete Structures and Materials
Published
2025-12-08
Volume
19
Issue
1
ISSN
  • 1976-0485 (ISSN-L)
  • 2234-1315
OpenAlex
W7110013256
Cited by
3
References
31
Citations by year
2026: 2 · 2025: 1
FWCI
0.82
Type
journal article
Language
en
Open access
Locations
International Journal of Concrete Structures and Materials (publishedVersion, cc-by-nc-nd)
Funders
  • Korea railroad institute (PK2502A2)
  • National Research Foundation of Korea (RS-2024-00459490)
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › Phase Change Materials Research
  • Physical Sciences › Engineering › Civil and Structural Engineering › Smart Materials for Construction
  • Physical Sciences › Engineering › Civil and Structural Engineering › Concrete Properties and Behavior
Keywords
microencapsulated phase change materials, cementitious materials, automated guideway transit, railway infrastructure, temperature regulation, compressive strength, heat accumulation, rubber-tired vehicles

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