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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

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