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Development of Low Alkaline Cement Considering Pozzolanic Reaction for Support System in HLW Repository Construction

Published online by Cambridge University Press:  21 March 2011

Masashi Nakayama ,
Keishiro Iriya ,
Atsushi Fujishima ,
Morihiro Mihara ,
Koichiro Hatanaka ,
Yuji Kurihara  and
Mikazu Yui
Masashi Nakayama
Affiliation:
Horonobe Underground Research Center JAEA, Hokushin 432-2, Horonobe, Hokkaido 098-3224, Japan
Keishiro Iriya
Affiliation:
Civil Engineering Division, Obayashi Co., Tokyo, 204-8558, Japan
Atsushi Fujishima
Affiliation:
Geological Isolation Research and Development Department, JAEA, Tokai 319-1194, Japan
Morihiro Mihara
Affiliation:
Geological Isolation Research and Development Department, JAEA, Tokai 319-1194, Japan
Koichiro Hatanaka
Affiliation:
Horonobe Underground Research Center JAEA, Hokushin 432-2, Horonobe, Hokkaido 098-3224, Japan
Yuji Kurihara
Affiliation:
Civil Engineering Division, Obayashi Co., Tokyo, 204-8558, Japan
Mikazu Yui
Affiliation:
Geological Isolation Research and Development Department, JAEA, Tokai 319-1194, Japan
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Abstract

Cementitious materials have been studied for their applicability as support and lining in the construction of shafts and tunnels of the underground facilities for HLW disposal system. However, in the case of Ordinary Portland Cement (OPC), the buffer materials and the host rock may be altered due to the high alkalinity of groundwater contacting the OPC in the long-term. Low alkaline cements with high content of pozzolanic material were developed in order to reduce such hyper alkaline alteration. This paper shows that the pH of the leaching solution of this cement is about 11, and that it can be applied for full scale lining and for shotcrete.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 932: Symposium – Scientific Basis for Nuclear Waste Management XXIX , 2006 , 110.1
Copyright
Copyright © Materials Research Society 2006

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References

REFERENCE

1. JNC: Second Progress Report on Research and Development for the Geological Disposal of HLW in Japan H12: Project to Establish the Scientific and Technological Basis for HLW Disposal in Japan Project Overview Report, JNC TN1410 2000-001 (1999).Google Scholar
2. Tajima, T., Fujii, K., Kubo, H. and Mihara, M.: Alteration of Bentonite by Hyper Alkaline Fluids, Gold Schmidt Conference Abstracts, A467 (2003).Google Scholar
3. Mihara, M., Iriya, K., Neyama, A. and Ito, M.: Experimental and Modeling Studies on the Interaction between Cement Paste with Silica Fume and Distilled Water, Radioactive Waste Research, Vol.3.No.2, pp71–79,(1997). (in Japanese)Google Scholar
4. Iriya, K.. Matsui, A. and Mihara, M.: The study on Applicability of HFSC for Radioactive Repositories, Proceedings of ICEM99 (1999).Google Scholar
5. Greenberg, S.A. and Chang, T.N.: Investigation of the Colloidal Hydrated Calcium Silicates II, The Journal of Physical Chemistry, Vol.69, 182 (1965).Google Scholar
6. Suzuki, K., Nishikawa, T., Yamade, Y. and Taniguchi, I.: Analysis of Hydrated Phases of Evaluating the Durability on Concrete, Concrete Research and Technology, Vol.1, No.2, 39, JCI (1990). (in Japanese)Google Scholar
7. Iriya, K., Mikami, T., Yasuoka, T. and Uegaki, Y.: Study on construction method of concrete in the underground research laboratory, JNC TJ1400 2001-004 (2001). (in Japanese)Google Scholar
8. Tazawa, E. and Miyazawa, S.: Autogenous Shrinkage Caused by Self Desiccation in Cementitious Material, International Congress on the Chemistry of Cement, Volume IV, pp.712–718, New Delhi (1992).Google Scholar