[1]李聪 孙奇娜 * 徐计 李俊峰.矿物混合材在放射性废树脂水泥固化中的作用[J].中国材料进展,2016,(07):011-15.[doi:10.7502/j.issn.1674-3962.2016.07.05]
 LI Cong,SUN Qina *,XU Ji,et al.The effects of mineral admixtures in cementation of radioactive spent resin[J].MATERIALS CHINA,2016,(07):011-15.[doi:10.7502/j.issn.1674-3962.2016.07.05]
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矿物混合材在放射性废树脂水泥固化中的作用()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2016年第07期
页码:
011-15
栏目:
特约研究论文
出版日期:
2016-07-31

文章信息/Info

Title:
The effects of mineral admixtures in cementation of radioactive spent resin
作者:
李聪1 孙奇娜1 * 徐计1 李俊峰2
(1燕山大学 河北省应用化学重点实验室 环境与化学工程学院
2清华大学 核能与新能源技术研究院 环境技术研究室
Author(s):
LI Cong1 SUN Qina1 * XU Ji1 LI Junfeng2
(1 Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University,
2 Laboratory of Environmental technology, Institute of Nuclear and New Energy Technology, Tsinghua University
关键词:
水泥固化放射性废物矿物混合材水化活性
DOI:
10.7502/j.issn.1674-3962.2016.07.05
文献标志码:
A
摘要:
水泥固化是核电站放射性废物处理的常用技术,在放射性废物的水泥固化过程中,矿物混合材对于固化操作性、固化体机械性能及核素浸出性等方面表现出重要影响。本文综述了活性和非活性矿物混合材的特性,及其在典型放射性废物——放射性废树脂水泥固化中的应用和对固化体性能的具体作用。活性矿物混合材的形态效应、火山灰效应和微集料效应以及非活性矿物混合材的填充作用可改善水泥固化体性能,降低水泥水化热升温,提高固化体抗压强度,抗裂性和耐久性,降低核素浸出率。混合材种类和掺加比例极大地影响固化效果,通过配方实验保证混合材的适当掺量,可以保证水泥固化体性能的提升,保证固化体在处置期间的长期稳定性。
Abstract:
Cementation is one of the commonly used techniques for radioactive wastes treatment. In the process of radioactive waste cementation, mineral admixtures have significantly positive effects on operational property, mechanical property and nuclides leaching ability. In this paper, the properties of active and non-active mineral admixtures, the application of mineral admixtures in radioactive resins cementation and the effects on waste-forms properties were reviewed. The morpha effect, pozzolanic activity, micro aggregate effect of activemineral admixtures and filling effect of non-active mineral admixtures enhanced the properties of cement-solidified waste-forms, which involves lower hydration heat during cement solidification, higher compressive strength, crack resistance and durability, and reduced nuclides leaching ability. Different admixtures and blending amounts affected cementation tremendously; therefore, formula experiments were crucial to obtain appropriate blending amounts and to guarantee enhanced mechanical properties and durability of cement-solidified waste-forms.
更新日期/Last Update: 2016-06-29