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Ryoma Kitagaki

Hokkaido University

５ Kita 8 Jonishi, Kita Ward

Hokkaido Prefecture

Sapporo, 060-0808

Japan

  • Hokkaido University

SCHOLARLY PAPERS

8

DOWNLOADS

326

TOTAL CITATIONS

2

Scholarly Papers (8)

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1.

DAC Coating Technology: Direct Air Capture and Corrosion Prevention in Concrete Structures

Proceedings of the 17th Greenhouse Gas Control Technologies Conference (GHGT-17) 20-24 October 2024
Number of pages: 6 Posted: 02 Dec 2024
Keiichi Yano, Ryosuke Saito, Yuya Yoda, Masato Tsujino, Akira Nishida, Yogarajah Elakneswaran, Hisanori Senboku, Masatoshi Sakairi, Koji Fushimi and Ryoma Kitagaki
Shimizu Corporation, Shimizu Corporation, Shimizu Corporation, Shimizu Corporation, Shimizu Corporation, Hokkaido University, Hokkaido Univeristy, Hokkaido University, Hokkaido University and Hokkaido University
Downloads 82 (790,029)

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Carbon sequestration; Cement-based materials; Reinforced concrete; Direct air capture; Mineralization

2.

Proposal of a new pretreatment of accelerated carbonation for evaluating material potential

Downloads 45 (1,121,190)

Proposal of a new pretreatment of accelerated carbonation for evaluating material potential

Number of pages: 52 Posted: 19 Nov 2025
Luge Cheng, Ryo Kurihara, ZHENLI YANG, Takahiro Ohkubo, Ryoma Kitagaki, Atsushi Teramoto, Yuya Suda and Ippei Maruyama
affiliation not provided to SSRN, University of Tokyo, affiliation not provided to SSRN, Chiba University, Hokkaido University, Hiroshima University, Niigata University and Nagoya University
Downloads 39 (1,224,220)

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Carbonation (C), Pretreatment, Water content, Supplementary cementitious materials (SCM)

Proposal of a new pretreatment of accelerated carbonation for evaluating material potential

Number of pages: 53 Posted: 20 Jan 2026
Luge Cheng, RYO KURIHARA, Zhenli Yang, Takahiro Ohkubo, Ryoma Kitagaki, Atsushi Teramoto, Yuya Suda and Ippei Maruyama
affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Chiba University, Hokkaido University, Hiroshima University, Niigata University and Nagoya University
Downloads 6 (1,635,165)

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Carbonation (C), Pretreatment, Water content, Supplementary cementitious materials (SCM)

3.

Mechanisms of Change in Accelerated Carbonation Progress in Cement Paste Under Different Relative Humidity Conditions

Number of pages: 46 Posted: 05 Dec 2024
Luge Cheng, Ryo Kurihara, Takahiro Ohkubo, Ryoma Kitagaki, Atsushi Teramoto, Yuya Suda and Ippei Maruyama
affiliation not provided to SSRN, University of Tokyo, Chiba University, Hokkaido University, Hiroshima University, Niigata University and Nagoya University
Downloads 45 (1,121,190)

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Carbonation (C), Microstructure, Relative humidity, Calcium-Silicate-Hydrate (C-S-H)

4.

Mechanistic Insights into Accelerated Carbonation Fronts in Cement Pastes with Varying Ca/Si Ratios: The Roles of Water Transport and Microstructural Evolution

Number of pages: 53 Posted: 23 Jun 2025
Luge Cheng, Ryo Kurihara, Zhenli Yang, Takahiro Ohkubo, Ryoma Kitagaki, Atsushi Teramoto, Yuya Suda and Ippei Maruyama
affiliation not provided to SSRN, University of Tokyo, affiliation not provided to SSRN, Chiba University, Hokkaido University, Hiroshima University, Niigata University and Nagoya University
Downloads 39 (1,209,354)

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Carbonation (C), Water content, Calcium (alumino) silicate hydrate (C-(A)-S-H), Supplementary cementitious materials (SCM)

5.

Mechanistic insights into carbonation shrinkage of hardened cement paste via RH-dependent pathways of decalcification and decomposition of C-A-S-H

Number of pages: 61 Posted: 19 Nov 2025
Yuya Suda, Takahiro Ohkubo, Atsushi Teramoto, Ryoma Kitagaki, Ryo Kurihara and Ippei Maruyama
Niigata University, Chiba University, Hiroshima University, Hokkaido University, University of Tokyo and Nagoya University
Downloads 34 (1,277,121)

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carbonation shrinkage, decalcification, decomposition, Ca-modified silica gel, C-A-S-H

6.

Plugging Effect of Fine Pore Water in Opc and Lc3 Paste During Accelerated Carbonation Monitored Via Single-Sided Nuclear Magnetic Resonance Spectroscopy

Number of pages: 50 Posted: 24 Jun 2024
Luge Cheng, Ryo Kurihara, Takahiro Ohkubo, Ryoma Kitagaki, Yuya Suda, Atsushi Teramoto and Ippei Maruyama
affiliation not provided to SSRN, University of Tokyo, Chiba University, Hokkaido University, Niigata University, Hiroshima University and Nagoya University
Downloads 33 (1,277,121)
Citation 1

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Acceleration (A), Carbonation (C), Calcium-Silicate-Hydrate (C-S-H) (B), Pore Size Distribution(B)

7.

Estimation and Imaging of Thickness of Iron Hydroxide Adhering to Electric Corroded Rebar by Pulsed Neutron Transmission Spectroscopy and Modified Rits Analysis

Number of pages: 28 Posted: 19 Jul 2023
Gaku Ishikura, Hirotaka Sato, Ryoma Kitagaki, Takashi Kamiyama, Dayoung Oh and Yuya Yoda
Hokkaido University, Hokkaido University, Hokkaido University, Hokkaido University, Hokkaido University and Shimizu Corporation
Downloads 25 (1,385,945)

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electric corroded rebar, XRD, Raman spectroscopy, pulse neutron transmission spectroscopy, RITS code

8.

Semi-Dry Natural Carbonation at Different Relative Humidities: Degree of Carbonation and Reaction Kinetics of Calcium Hydrates in Cement Paste

Number of pages: 50 Posted: 16 Sep 2024
Naohiko Saeki, Ryo Kurihara, Takahiro Ohkubo, Atsushi Teramoto, Yuya Suda, Ryoma Kitagaki and Ippei Maruyama
affiliation not provided to SSRN, University of Tokyo, Chiba University, Hiroshima University, Niigata University, Hokkaido University and Nagoya University
Downloads 23 (1,411,822)
Citation 1

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Degree of carbonation, kinetics, Phase assemblage, Relative humidity