Postdoctoral Researcher, Korea University, South Korea
Dr. Yoo Sun-Jae is a dedicated researcher specializing in advanced materials and structural engineering, particularly focusing on carbon fiber-reinforced polymer (CFRP) bars, ultra-high-performance fiber-reinforced concrete (UHPFRC), and fire-resistant concrete structures. With a Ph.D. from Korea University, his work explores bonding behaviors, impact resistance, and fire-damaged concrete rehabilitation. Dr. Yoo has contributed significantly to the development of lightweight high-strength concrete using nanotechnology and innovative shelter-in-place (SIP) infrastructure. His research combines experimental and analytical approaches to advance sustainable and resilient construction technologies. Recognized for his excellence, he has received awards such as the Best Poster Award from the Korean Society of Civil Engineers and the Best Paper Award from the Journal of the Korean Society of Hazard Mitigation. Dr. Yoo is also an active contributor to international conferences and holds patents for concrete reinforcement technologies.
Professional Profile
Google Scholar
Education 🎓
Dr. Yoo Sun-Jae earned his Bachelor’s (2019), Master’s (2021), and Ph.D. (2025) in Civil Engineering from Korea University, Seoul, Republic of Korea. His Ph.D. dissertation focused on the bond performance of ribbed CFRP bars in UHPFRC after exposure to elevated temperatures, achieving a GPA of 4.23/4.50. During his Master’s, he investigated strengthening methods for two-way slabs under low-velocity impact loading, graduating with a GPA of 3.85/4.50. His academic journey reflects a strong foundation in structural engineering, reinforced by his advisor, Professor Young Soo Yoon. Dr. Yoo’s education has equipped him with expertise in advanced materials, concrete behavior, and innovative construction techniques.
Experience 🔧
Dr. Yoo Sun-Jae has extensive research experience, including projects funded by the National Research Foundation of Korea (NRF) and the Korea Agency for Infrastructure Technology Advancement. His work spans the development of smart strengthening techniques for fire-damaged concrete structures, CFRP reinforcements with zero corrosion, and lightweight high-strength concrete using nanotechnology. He has also contributed to the development of SIP infrastructure and DfMA-based modules for curved bridges. Dr. Yoo’s hands-on experience includes experimental analysis, material development, and structural optimization, making him a versatile researcher in civil engineering and construction materials.
Awards and Honors 🏆
Dr. Yoo Sun-Jae has been recognized for his outstanding contributions to civil engineering. In 2023, he received the Best Poster Award from the Korean Society of Civil Engineers. Earlier, in 2021, he was honored with the Best Paper Award from the Journal of the Korean Society of Hazard Mitigation. His academic excellence was acknowledged in 2018 with the Academic Achievement Excellence Award from Korea University. These accolades highlight his dedication to advancing research in structural engineering and innovative construction materials.
Research Focus 🔍
Dr. Yoo Sun-Jae’s research focuses on the bonding behavior of CFRP bars in UHPFRC, particularly under elevated temperatures and fire conditions. He investigates the impact resistance, fire resistance, and development length of concrete structures reinforced with advanced materials. His work also includes the development of lightweight high-strength concrete using carbon nanotubes (CNTs) and the optimization of SIP infrastructure. Dr. Yoo’s research integrates experimental and analytical approaches to enhance the durability, safety, and sustainability of modern construction materials and techniques.
Publication Top Notes 📚
- Flexural behavior of ribbed CFRP bars in UHPFRC beams with lap-splice connection.
- Degradation of flexural bond of CFRP bar in UHPFRC after exposure to elevated temperature.
- Reinforcing effect of CNT on the microstructure and creep properties of high-strength lightweight concrete.
- Flexural bond behavior and development length of ribbed CFRP bars in UHPFRC.
- Structural benefits of using carbon nanotube reinforced high-strength lightweight concrete beams.
- Bonding behavior and prediction of helically ribbed CFRP bar embedded in UHPC.
- Comparative bond-slip response of ribbed CFRP bar to UHPC after exposure to high temperature.
- Evaluation of residual bond behavior of CFRP and steel bars embedded in UHPC after elevated temperature.
- Effect of design code and evacuation information on strategic location of SIP in light rail stations.
- Effect of strengthening methods on two-way slab under low-velocity impact loading.
- Effect of internal curing on shrinkage and creep of self-compacting lightweight concrete.
- Post-heating flexural performance of UHPFRC members reinforced with ribbed CFRP bar.
- Influence of elevated temperature on the flexural behavior of spliced CFRP bars in UHPFRC beams.
Conclusion 🌟
Dr. Yoo Sun-Jae is a highly accomplished researcher whose work in CFRP bars, UHPFRC, and fire-resistant concrete structures has significantly advanced the field of civil engineering. His innovative approaches to material development and structural optimization have earned him numerous accolades and patents. Through his research, Dr. Yoo continues to contribute to the development of sustainable, resilient, and high-performance construction technologies, ensuring safer and more durable infrastructure for the future.