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http://dx.doi.org/10.14190/JRCR.2017.5.3.223

Development of Low-activation Cement for Decreasing the Activated Waste in Nuclear Power Plant  

Lee, Binna (Structural Engineering Research Institute, Korea Institute of Civil engineering and Building technology)
Lee, Jong-Suk (Structural Engineering Research Institute, Korea Institute of Civil engineering and Building technology)
Min, Jiyoung (Structural Engineering Research Institute, Korea Institute of Civil engineering and Building technology)
Lee, Jang-Hwa (Structural Engineering Research Institute, Korea Institute of Civil engineering and Building technology)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.5, no.3, 2017 , pp. 223-229 More about this Journal
Abstract
When concrete is exposed to neutron rays for a long time, the concrete tends to become activated. If activated, it is classified as middle or low level radioactive waste. However, the great amount of the activated concrete is hard to dispose. In this study, low-activation cement was developed for decreasing the activated waste from shielding concrete around nuclear reactor. Furthermore, the manufactured low-activation was analyzed with activation nuclide Eu, Co. The low-activation cement showed great advantage for low-activation with detecting none of Eu and 3.75ppm of Co while ordinary portland cement showed 0.4~0.9ppm of Eu, 5.5~19.8ppm of Co content. As the results of physical properties of the low-activation cement, it is similar to type 1 ordinary portland cement and accords with type 4 low heat portland cement. Meanwhile, as for the chemical properties of the cement, it accords wite type 1 and 4 at the same time.
Keywords
Activation; Cement; Waste; Dismantling;
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