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http://dx.doi.org/10.14190/JRCR.2022.10.3.276

Evaluation of Rheological Properties and Acceptance Criteria of Solidifying Agents for Radioactive Waste Disposal Using Waste Concrete Powder  

Seo, Eun-A (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology)
Kim, Do-Gyeum (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology)
Lee, Ho-Jea (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.10, no.3, 2022 , pp. 276-284 More about this Journal
Abstract
In this study, performance evaluation and rheological characteristics were analyzed for recycling the fine powder of nuclear power plant dismantled waste concrete as a solidifying agent for radioactive waste disposal. The radioactive concrete fine powder was used to prepare a simulated sample, and the test specimen was prepared using Di-water, CoCl2, and 1 mol CsCl aqueous solution as mixing water. Regardless of the aggregate mixing ratio and the type of mixing water, it satisfies the performance standard of 3.45 MPa for compressive strength at 28 days of age. All specimens satisfied the criteria for submersion strength, and the thermal cycle compressive strength satisfies the criteria for all specimens except Plain-50. As a result of evaluating the rheological properties of the solidifying agent, it was found that the increase in the aggregate mixing rate decreased the yield stress and plastic viscosity. The leaching index for cobalt and cesium of all specimens was 6 or higher, which satisfies the standard. In order to secure the stable performance of the solidifying agent, it is considered effective to use 40 % or less of the aggregate component in the solidifying agent.
Keywords
Waste concrete; Radioactive concrete; Recycling; Solidifying agent; Cobalt; Cesium;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 US EPA. Method 9095B. (2004). Paint Filter Liquids Test.
2 World Nuclear Power Market INSIGHT (2021). Korea Energy Economics Institute, 3-7.
3 Yang, H.Y., Kim, J.Y. (2007). A feasibility study on the polymer solidification of evaporator concentrated waste, Journal of Nuclear Fuel Cycle and Waste Technology. 5(4). 297-308 [in Korean].
4 ASTM C 39 (2020). Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens, ASTM International, West Conshohocken.
5 ASTM B 553 (1991). Standard Test Method for Thermal Cycling of Electroplated Plastics, ASTM International, West Conshohocken.
6 Korea Agency for Technology and Standards (2017). Testing Method for Compressive Strength of Hydraulic Cement Mortars (KS L 5105), Seoul, Korea; Korea Standards Association.
7 Xie, J., Cui, X., Guo, N., Liu, G. (2021). Influence of mix proportions on rheological properties, air content of wet shotcrete-a case study, Applied Sciences, 11(8), 3550.   DOI
8 Mun, Y.B., Choi, H.K., Kim, J.Y., Lee, J.H., Chung, C.W., Kim, J.H. (2017). Recycling waste paste from concrete for solidifying agent, Journal of the Korea Institute of Building Construction, 17(3), 269-277 [in Korean].   DOI
9 Seo, E.A., Yoon, H.S., Kim, D.G., Yang, K.H., Nguyen, V.T. (2021b). Feasibility tests on ground granulated powders compiled from waste concrete for soil solidification, European Journal of Environmental and Civil Engineering, 1-17.
10 Kim, J.H., Seo, E.A., Kim, D.G., Chung, C.W. (2021). Utilization of recycled cement powder as a solidifying agent for radioactive waste immobilization, Construction and Building Materials, 289, 1-11.
11 Seo, E.A., Lee, H.J., Kwon, K.H., Kim, D.G. (2021a). Characteristics evaluation of solidifying agent for disposal of radioactive wastes using waste concrete powder, Journal of Korean Recycled Construction Resources Institute, 9(4), 451-459 [in Korean].
12 Sasaki, T., Sone, T., Koyama, H., Yamaguchi, H. (2009). Steamassisted pyrolysis system for deconta- mination and volume reduction of radioactive organic waste, Journal of Nuclear Science and Technology, 46(3), 232-238.   DOI
13 US EPA. Method 1315 - Revision 1. (2017). Mass Transfer Rates of Constituents in Monolithic or Compacted Granular Materials Using a Semi-Dynamic Tank Leaching Procedure, Test Method for Evaluating Solid Waste, Physical/Chemical Methods.