Overview
CO₂ Reduction in Line with Korea’s 2023 Carbon Neutrality Plan
Manual cleaning is labor-intensive, time-consuming, and hazardous in confined tunnel environments,
with a conventional speed of only 0.5 km/h.
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Core Competencies
Purpose
Develop eco-friendly, cement-free sustainable concrete (C2S Concrete)
for PSC sleepers to reduce CO₂ emissions, improve durability with GRFP reinforcement,
and align with national carbon neutrality and ESG strategies.
Cement-Free Binder
Cement-Free Binder
High Strength
High Strength
Accelerated hydration induced by high-temperature curing (≥ 70 °C)
achieves compressive strength ≥ 90 MPa after 3 days of curing
Excellent Durability
Excellent Durability
Resistance to freeze-thaw, chloride ion penetration, and carbonation
Expected Benefits
Carbon Neutrality Alignment
– Fully in line with Korea’s national carbon neutrality policyESG Compliance
– Supports sustainability strategies of railway operatorsDurability & Sustainability
– Upgrades long-term performance of PSC sleepersCO₂ Reduction 72%
– Verified by SimaPro LCA analysis
Certifications
Compliance with ISO 22480-2 structural and interface performance requirements
TRL 8
Installation of 27 m on both up and down lines at Gwangju Line1 Yongsan Depot (2024.11.23-26)
Contact
Korea Railroad Research Institute (KRRI)
Global Business Department
Dr. Younghoon Bae
E-mail: yhbae@krri.re.kr
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