Dr SunJae Yoo | Concrete Structure | Best Scholar Award

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.

Yan Liu - High performance cementitious materials - Best Researcher Award

Southeast University - China

AUTHOR PROFILE

SCOPUS

EXPERT IN ENGINEERING INNOVATION 🏗️

Yan Liu, Ph.D., earned his doctorate in Engineering from Southeast University, where he developed a keen focus on high-performance concrete materials. His innovative research has led to the publication of several SCI papers, demonstrating his expertise in the field. His work revolves around advanced materials used in construction, contributing significantly to the knowledge base of high-temperature resistant cement.

RESEARCH IN HIGH-PERFORMANCE CONCRETE 🧱

Yan Liu’s primary research focuses on the development of advanced concrete materials, particularly Magnesium Potassium Phosphate Cement (MKPC). His work explores the integration of fly ash and silica fume to improve the high-temperature performance of MKPC. By blending these components, he aims to enhance the durability and resilience of materials used in critical infrastructure, such as fireproof coatings and patching materials.

MAGNESIUM POTASSIUM PHOSPHATE CEMENT RESEARCH 🔥

One of Yan Liu’s key studies examines the behavior of MKPC under high-temperature conditions. His experiments involve testing the material’s compressive and flexural strength before and after exposure to elevated temperatures. His findings reveal that incorporating silica fume and fly ash significantly improves MKPC’s strength and heat resistance, making it more suitable for high-temperature environments.

MICROSTRUCTURE AND PHASE ANALYSIS 🔬

Utilizing advanced techniques such as XRD and SEM, Yan Liu delves into the microstructure of MKPC to understand its performance at a microscopic level. His research shows how silica fume and fly ash promote the sintering of phases derived from K-struvite decomposition, forming ceramic-like structures that enhance the material’s strength under extreme conditions.

INNOVATION IN MATERIAL DURABILITY 🏆

Yan Liu’s research has profound implications for the construction industry, particularly in enhancing the durability of materials used in high-temperature settings. His work on MKPC not only provides a deeper understanding of the material's behavior but also introduces practical solutions to improving fireproof and patching materials used in critical infrastructure projects.

ADVANCED CEMENT COMPOSITES 📚

Yan Liu has dedicated his career to advancing the performance of cement composites, focusing on the mechanical properties and interface mechanisms of materials like epoxy resin and CFRP. His research is geared toward creating tougher, more resilient building materials that can withstand both environmental stress and long-term wear, ensuring greater safety and reliability.

PASSION FOR SUSTAINABILITY 🌍

In addition to improving material performance, Yan Liu is passionate about sustainability in construction. His research into utilizing industrial by-products like fly ash and silica fume supports the industry’s shift towards greener, more sustainable practices. By reducing the environmental footprint of construction materials, his work aligns with global efforts toward sustainable development.

NOTABLE PUBLICATION

Title: Interface Mechanism and Mechanical Properties of Micron PS Epoxy Resin Toughened Steel-CFRP
Authors: Chen, Z., Yan, Z., Liu, Y., Peng, L.
Journal: Bulletin of the Chinese Ceramic Society
Year: 2024

Title: Fatigue Performance of Self-bonded Prestressed CFRP Repaired Steel Plates Containing Defects
Authors: Chen, Z.-Y., Liu, Y., Wang, S.-Q., Yan, Z.-Z., Peng, H.
Journal: Zhongguo Gonglu Xuebao/China Journal of Highway and Transport
Year: 2024

Title: Analysis of Residual Stresses in Curved Cutouts of Steel Box Girder Transverse Diaphragms
Authors: Wang, R., Xiong, Y., Ni, H., Liu, Y., Chen, Z.
Journal: Advances in Civil Engineering
Year: 2024

Title: Dynamic Frequency and Wet Mode of the Supporting Cables of a Submerged Floating Tunnel in Tube Motion State
Authors: Zhu, C., Liu, Y., Yi, Z.
Journal: Zhendong yu Chongji/Journal of Vibration and Shock
Year: 2024

Title: Study of Mechanical Properties of Micron Polystyrene-Toughened Epoxy Resin
Authors: Li, C., Liu, Y., Chen, Z.
Journal: Applied Sciences (Switzerland)
Year: 2023

SunJae Yoo | Concrete Structure | Best Scholar Award