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Study on the Effects of Hydraulic Transport of Groundwater in Cement

Published online by Cambridge University Press:  10 February 2011

M. Toyohara ,
M. Kaneko ,
F. Matsumura ,
N. Mitsutsuka ,
Y. Kobayashi  and
M. Imamura
M. Toyohara
Affiliation:
Nuclear Engineering Lab., Power Systems & Services Company, Toshiba Corp., 4-1 Ukishima, Kawasaki-ku, Kawasaki, 210-0568, [email protected]
M. Kaneko
Affiliation:
Nuclear Engineering Lab., Power Systems & Services Company, Toshiba Corp., 4-1 Ukishima, Kawasaki-ku, Kawasaki, 210-0568, Japan
F. Matsumura
Affiliation:
Advanced Energy Design & Engineering. Dept., Toshiba Corp
N. Mitsutsuka
Affiliation:
Advanced Energy Design & Engineering. Dept., Toshiba Corp
Y. Kobayashi
Affiliation:
Low Level Waste Management Dept., Japan Nuclear Fuel Ltd., 2-2-2, Uchisaiwai, Chiyoda-ku, Tokyo 100-0011, Japan
M. Imamura
Affiliation:
Low Level Waste Management Dept., Japan Nuclear Fuel Ltd., 2-2-2, Uchisaiwai, Chiyoda-ku, Tokyo 100-0011, Japan
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Abstract

This paper discussed the effects of solution velocity thorough the cementitious materials on formation of secondary minerals. These minerals were produced by the reaction of hydrates in cement and chemicals in groundwater. The chemicals estimated were NaHCO3, Na2SO4 and NaCl. Calcite yielded by the reaction of carbonate ion and Ca2+ was found to cause a change in the porosity volume of cement, and thus, to decrease the flow rate. The existence of sulfate ion did not affect the flow rate. However, in the case of a solution containing both chloride and carbonate ions, the flow rate increased because Ca dissolution from hydrates was induced.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 608: Symposium QQ – Scientific Basis for Nuclear Waste Management XXIII , 1999 , 337
Copyright
Copyright © Materials Research Society 2000

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References

REFERENCES

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