Papers - LI Chunhe
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RC橋脚の単純化した経年劣化及び耐震補強に関する一考察 Reviewed
山下典彦，李春鶴，宮脇幸治郎，久保田晃平
日本地震工学会論文集 2025.3
Authorship：Corresponding author Publishing type：Research paper (scientific journal)
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ESTIMATION METHOD OF CRACKING DUE TO DRYING SHRINKAGE FOR CHEMICALLY PRESTRESSED CONCRETE WALL FENCES WITHOUT SYMMETRICAL AXIS IN CROSS SECTION Reviewed
81 ( 2 ) 1 - 17 2025.2
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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Study on the Mechanical Properties, Tensile Performance, Hydration Heat, and Microstructure of VAE-Modified Rubber Mortar Reviewed International coauthorship
Jiaming Zhang,Ce Bian,Bowen Chen,Chunhe Li,Hua Wei,and Hao Lu
materials 18(3) ( 651 ) 2025.1
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Flocculation Mechanism and Microscopic Statics Analysis of Polyacrylamide Gel in Underwater Cement Slurry Reviewed International coauthorship
Hao Lu,Bo Dai,Chunhe Li,Hua Wei, and Jinhui Wang
Gels 11(2) ( 99 ) 2025.1
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)
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荷重作用・塩化物浸透・鉄筋腐食を連成した塩害の確率的モデルの提案および 様々な混和材を用いたRC梁の腐食損傷に関する解析的評価 International coauthorship
李 春鶴、Wang Tiao、欒 堯、三原 孝文
土木学会西部支部技術発表会論文集 1 - 6 2024.12
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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One-Dimensional Motion Representation for Standing/Sitting and Their Transitions Reviewed
Geunho Lee,Yusuke Hayakawa,Takuya Watanabe andChunhe Li
Sensors 24 ( 21 ) 6967 2024.10
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Analysis of the Impact and Mechanism of Polyacrylate-Based Composite Paste on the Performance of Recycled Aggregate Reviewed International coauthorship
Huaisen Li , Chunhe Li , Hua Wei , Qingan Li , Hao Lu and Jinyu Ge
materials 17 ( 21 ) 5242 2024.10
Language：English Publishing type：Research paper (scientific journal)
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Hydration characteristics and kinetic analysis of polyacrylamide (PAM) anti-dispersion cement-based materials Reviewed International coauthorship
He Y., Wei H., Li Chunhe., Lu H., Xu F., Zhang J.
Journal of Physics: Conference Series 2790 ( 1 ) 1 - 15 2024.5
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Journal of Physics: Conference Series
Through phase analysis and quantitative calculations of the hydration process, the inclusion of polyacrylamide (PAM) in Anti-dispersion Water Paste affects its hydration characteristics is discovered. Specifically, the presence of PAM reduces early reactivity while accelerating progress in the middle to late stages of hydration. By employing K-D hydration kinetic analysis, it is confirmed that the use of PAM results in the formation of a multi-nucleation homogeneous point system within the cement slurry. This system prolongs the NG (nucleation and growth) process time, increases the hydration degree during the transition from NG to I (induction) process, and inhibits the heterogeneous precipitation of hydration products. Consequently, the early hydration of cement is hindered. As the hydration reaction advances, the microstructure of the product under multi-nucleation points increases the specific surface area. This gradual breakthrough of the hydration threshold barrier shortens the duration of the phase boundary reaction process and reduces the hydration degree during the I and D (diffusion) processes. Consequently, the late-stage hydration rate is accelerated.
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Practical trials for detection of internal defects using mobile inspection robot in tunnels Reviewed
Geunho Lee and Chunhe Li
Proc. 2024 The 4th International Civil Engineering and Architecture Conference 2024.3
Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings)
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Detection scheme employing cyclical hitting hammer for internal defects in concrete structures Reviewed
Uozumi Ryutaro, Lee Geunho, Li Chunhe, and Hirae Kaito
Proc. 29th International Symposium on Artificial Life and Robotics GS10-6 292 - 295 2024.1
Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings)
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高強度コンクリートを用いたPPC梁に必要なPCグラウト強度 Reviewed
楢原健太郎, 松浪康行, 李春鶴, 辻󠄀幸和
プレストレストコンクリート 66 ( 1 ) 47 - 54 2024.1
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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Development of four-wheel drive skid-steered mobile robot for automated hammering inspection Reviewed
Geunho Lee, Kaito Hirae, and Chunhe Li
Proc. 13th International Conference on Mechanical Engineering (TSME-ICoME 2023) 473 - 479 2023.12
Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings)
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材料保管温度が膨張コンクリートの物性に及ぼす影響に関する研究
小島 大翔・山口 伊知郎・李 春鶴・辻 幸和
KABSE 創立40 周年記念九州橋梁・構造工学研究会シンポジウム論文集 18 - 23 2023.12
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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異なる相対湿度環境における亜硝酸リチウムを用いたASR 抑制効果の検
濵野 光樹・下村 克哉・高橋 佑弥・李 春鶴
KABSE 創立40 周年記念九州橋梁・構造工学研究会シンポジウム論文集 110 - 115 2023.12
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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酸浸漬処理を行った太陽光パネル由来の廃ガラスとフライアッシュを用いたモルタルの膨張特性 に関する研究
井上 穂香・李 春鶴・塩盛 弘一郎・原田 秀樹
KABSE 創立40 周年記念九州橋梁・構造工学研究会シンポジウム論文集 81 - 86 2023.12
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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複合リサイクル材料を用いた自己治癒形コンクリートの性能評価
生森 悠太・町浦 将太・真木 大介・李 春鶴
KABSE 創立40 周年記念九州橋梁・構造工学研究会シンポジウム論文集 65 - 70 2023.12
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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単純化した経年劣化過程によるRC橋脚の耐震補強に関する一考察 Reviewed
久保田 晃平、山下 典彦、李 春鶴、宮脇 幸治郎
第16回地震工学シンポジウム論文集 2023.11
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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Implementation and Feedback Controller of Mobile Platform for Hammering Inspection Robot Reviewed
HIRAE KAITO, LEE GEUNHO, LI CHUNHE, SAKAGUCHI SEIYA, UOZUMI RYUTARO
Proceedings of International Conference on Design and Concurrent Engineering & Manufacturing Systems Conference 2023 ( 0 ) 29.1 - 29.4 2023.9
Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings) Publisher：一般社団法人 日本機械学会
Today, Japan's infrastructure is more than half a century past its construction and is deteriorating. The goal is to improve the efficiency and automation of infrastructure inspections with the aim of preventing accidents such as the Sasago Tunnel collapse. We decompose infrastructure inspection into four elements: "movement," "signal input," "signal acquisition," and "analysis". In this paper, we focus on movement and develop a mobile robot to transport equipment necessary for inspections. The robot to be developed employs a skid steer, eliminating a complex steering mechanism, and is designed to be compact and simple while maintaining the rigidity of the vehicle body. In addition, to achieve automation of the entire inspection process, we aimed to develop a mobile robot to be used for the inspection robot and its feedback control, and based on the data of the designed robot, we conducted a simulation using MATLAB and showed that PD control was possible. Experiments were conducted to verify whether the created robot could actually be used for inspection in tunnels. We conducted a turning test, a hill climbing test, a battery durability test, and a wall-following test on the university's premises. The performance was sufficient as a mobile foundation for a tunnel inspection robot.
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Consideration of coupling of crack development and corrosion in assessing the reliability of reinforced concrete beams subjected to bending Reviewed International coauthorship
Tiao WANG,Chunhe LI, Jian-jun ZHENG, Jürgen HACKL, Yao LUAN, Tetsuya ISHIDA and Satya MEDEPALLI
Reliability Engineering & System Safety 2023.5
Language：English Publishing type：Research paper (scientific journal)
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Expansion Distributions and Mechanical Behaviors of Chemically Prestressed Concrete Beams Using Expansive Concrete Reviewed
Chunhe LI，Kentaro SUHARA, Yukikazu TSUJI, Hirohisa OTAKE
National Report of Japn on Structural Concrete 2022 2022 209 - 210 2023.3
Authorship：Lead author, Last author, Corresponding author Language：English Publishing type：Research paper (scientific journal)