Investigation of the Immobilization of the Radioactive Ion Exchange Resins into Specific Cement Using the Mixture Response Surface Approach

被引：7

作者：

Gan, Xueying ^{[1
]}

Lin, Meiqiong ^{[1
]}

Bao, Liangjin ^{[1
]}

Zhang, Yan ^{[1
]}

Zhang, Zhentao ^{[1
]}

机构：

[1] China Inst Atom Energy, Beijing 102413, Peoples R China

来源：

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY | 2008年 / 45卷 / 10期

关键词：

optimization; mixture design; cementation; spent resins;

D O I：

10.3327/jnst.45.1084

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

This study was conducted to assess a kind of specific cement (ASC) extensively and recommend a suitable formula for the immobilization of the radioactive ion exchange resins from China Institute of Atomic Energy (CIAE). A mixture response surface approach was employed to design the experiment and interpret the results. Compared with the blend composed of ordinary Portland cement (OPC), an optimum combination, resin: .17 (dry wt/wt); ASC: .43; zeolite: .10, and water: .30, was determined within a series of restrictions for Such properties as the slump, the 28-d compressive strength, the water immersion, the thaw-freeze resistance, the irradiation resistance. and the leaching rate. The diffusivities of (137)Cs and (60)Co of the waste forms resulting from the formula were 2.72E-06 (cm(2)/d) and 1.63E-07 (cm(2)/d) after 123 d, respectively. The loading amount of spent resins in the ASC form was larger than that in the OPC form by 5% under the equal performance indexes. The microanalysis indicated that there were many interlaced columnlike crystals (ettringites) developed in ASC-resin concrete. This structure could enhance the strength and stabilization of the waste forms significantly.

引用

页码：1084 / 1090

页数：7

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