Refine your search:     
Report No.
 - 
Search Results: Records 1-15 displayed on this page of 15
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

General overview of the research project investigating the radionuclide solution behavior in mock mortar matrix modeled after conditions at the Fukushima-Daiichi Nuclear Power Station

Igarashi, Go*; Haga, Kazuko*; Yamada, Kazuo*; Aihara, Haruka; Shibata, Atsuhiro; Koma, Yoshikazu; Maruyama, Ippei*

Journal of Advanced Concrete Technology, 19(9), p.950 - 976, 2021/09

 Times Cited Count:3 Percentile:69.43(Construction & Building Technology)

Journal Articles

A Project focusing on the contamination mechanism of concrete after the accident at Fukushima Daiichi Nuclear Power Plant

Yamada, Kazuo*; Maruyama, Ippei*; Haga, Kazuko*; Igarashi, Go*; Aihara, Haruka; Tomita, Sayuri*; Kiran, R.*; Osawa, Norihisa*; Shibata, Atsuhiro; Shibuya, Kazutoshi*; et al.

Proceedings of International Waste Management Symposia 2021 (WM 2021) (CD-ROM), 10 Pages, 2021/03

Journal Articles

New project on the analysis of contamination mechanisms of concrete at the Fukushima Daiichi Nuclear Power Station

Yamada, Kazuo*; Maruyama, Ippei*; Koma, Yoshikazu; Haga, Kazuko*; Igarashi, Go*; Shibuya, Kazutoshi*; Aihara, Haruka

Proceedings of International Waste Management Symposia 2019 (WM 2019) (CD-ROM), 6 Pages, 2019/03

Journal Articles

Quantification of water penetration into concrete through cracks by neutron radiography

Kanematsu, Manabu*; Maruyama, Ippei*; Noguchi, Takafumi*; Iikura, Hiroshi; Tsuchiya, Naoko*

Nuclear Instruments and Methods in Physics Research A, 605(1-2), p.154 - 158, 2009/06

 Times Cited Count:59 Percentile:96.98(Instruments & Instrumentation)

Journal Articles

Evaluation of water transfer from saturated lightweight aggregate to cement paste matrix by neutron radiography

Maruyama, Ippei*; Kanematsu, Manabu*; Noguchi, Takafumi*; Iikura, Hiroshi; Teramoto, Atsushi*; Hayano, Hiroyuki*

Nuclear Instruments and Methods in Physics Research A, 605(1-2), p.159 - 162, 2009/06

 Times Cited Count:28 Percentile:87.6(Instruments & Instrumentation)

Journal Articles

Visualization and quantification of water behavior around cracks by neutron radiography

Kanematsu, Manabu*; Noguchi, Takafumi*; Maruyama, Ippei*; Iikura, Hiroshi

Konkurito Kogaku Nenji Rombunshu (DVD-ROM), 29(1), p.981 - 986, 2007/00

Neutron radiography is one of the non-destructive methods. In this research, neutron radiography was applied to visualize and quantify the water penetration into concrete through cracks. The radiographs were obtained by the TNRF (Thermal Neutron Radiography Facility) installed at a research reactor, JRR-3M, in the Japan Atomic Energy Agency (JAEA). The quantitative capability of neutron radiography for the water content and the penetration depth in cement paste specimen were confirmed. The effects of crack and water content on the velocity and the depth of water penetration into concrete were visualized with several concrete specimens, to which surface water was supplied through the container.

Oral presentation

Basic research programs of vitrification technology for waste volume reduction, 65; Construction of MATRIX Database

Amamoto, Ippei; Oyama, Koichi; Nagano, Yuichi*; Nagao, Saichi*; Kitajima, Hideki*; Taneda, Naoki*; Maruyama, Tsutomu*; Sakai, Mitsuyoshi*; Nishikawa, Nobutaka*

no journal, , 

MATRIX database has been constructed to obtain experimental phase diagram using Interglad. It also possesses functions such as literature search, construction of computational phase diagrams by the thermodynamic method using FactSage as well as estimation of viscosity, density and/or electric resistance of certain glasses by neural network method.

Oral presentation

Study on the radionuclide contamination mechanisms of concrete and the estimation of distribution of radionuclides, 3; Sorption behavior of alpha nuclides

Aihara, Haruka; Shibata, Atsuhiro; Koma, Yoshikazu; Tomita, Sayuri*; Maruyama, Ippei*

no journal, , 

no abstracts in English

Oral presentation

Study on the radionuclide contamination mechanisms of concrete and the estimation of distribution of radionuclides, 9; Penetration of alpha radionuclides into hardened cement paste

Aihara, Haruka; Shibata, Atsuhiro; Koma, Yoshikazu; Tomita, Sayuri*; Yamada, Kazuo*; Maruyama, Ippei*

no journal, , 

no abstracts in English

Oral presentation

Study on the radionuclide contamination mechanisms of concrete and the estimation of distribution of radionuclides, 10; Modeling of penetration behavior of Cs and Sr into concrete at turbine building basement of Fukushima Daiichi Nuclear Power Station

Tomita, Sayuri*; Kobayashi, Yutaro*; Haga, Kazuko*; Hosokawa, Yoshifumi*; Yamada, Kazuo*; Aihara, Haruka; Igarashi, Go*; Maruyama, Ippei*

no journal, , 

no abstracts in English

Oral presentation

Basic study on elucidation of the mechanism of concrete contamination and estimation of contamination distribution with radioactive materials; Experimental verification on migration of Cs, Sr, and moisture

Maruyama, Ippei*; Yamada, Kazuo*; Ida, Masaya*; Shibuya, Kazutoshi*; Igarashi, Go*; Koma, Yoshikazu

no journal, , 

no abstracts in English

Oral presentation

Oral presentation

Spherical concretion formation; Understandings and applications

Yoshida, Hidekazu*; Yamamoto, Koshi*; Maruyama, Ippei*; Asahara, Yoshihiro*; Minami, Masayo*; Sirono, Sinichi*; Hasegawa, Hitoshi*; Katsuta, Nagayoshi*; Nishimoto, Shoji*; Muramiya, Yusuke*; et al.

no journal, , 

no abstracts in English

Oral presentation

Study for self-sealing process of EDZ and flow-paths factures learnt from spherical carbonate concretion formation

Yoshida, Hidekazu*; Yamamoto, Koshi*; Maruyama, Ippei*; Karukaya, Koichi*; Nakayama, Masashi; Sakurai, Akitaka; Sato, Toshinori

no journal, , 

Spherical, isolated carbonate concretions occur throughout the world in marine argillaceous sedimentary rocks of widely varying geological ages. These concretions are characteristically highly enriched in CaCO$$_{3}$$ compared to the surrounding sedimentary rock matrices and are commonly containing the well-preserved fossils inside. Recently the process of the enrichment of CaCO$$_{3}$$ has been revealed and synthetic concretion materials are developed. Here we will introduce the in-situ experiment with the synthetic concretion material for EDZ sealing carried out in Horonobe Underground Research Laboratory and the preliminary results of the EDZ sealing process and their sealing effectiveness.

Oral presentation

Cs and Sr penetration into concrete under the realistic conditions after the Fukushima-Daiichi NPP accident

Yamada, Kazuo*; Tojo, Yasumasa*; Tomita, Sayuri*; Aihara, Haruka; Igarashi, Go*; Maruyama, Ippei*

no journal, , 

no abstracts in English

15 (Records 1-15 displayed on this page)
  • 1