Thermal Stability of Geopolymer-Sr Contaminated Zeolite A Blends
Geopolymer have gradually become an alternative materials for hazardous and radioactive waste immobilization.However, the compatibility between radioactive waste and geopolymer in various extreme conditions are still not clear.In this study, the thermal stability of geopolymer solidified product of Sr contaminated zeolite A was investigated.For this purpose, the specimens after standard curing were subjected to temperatures of 600, 700 and 800 degrees C for 2h.Freeze-thaw cycles were also employed to test the thermal stability of geopolymer matrices.Meanwhile, changes in the leaching characteristics and physical properties were analyzed.Analysis showed that geopolymer-Sr contaminated zeolite A blends exhibited excellent thermal stability Although elevated temperature and freeze-thaw cycles led to the deterioration of geopolymer matrices, the leaching rate and mechanical properties of solidified product were still acceptable.The resluts obtained indicated that geopolymer appeared to be very suitable for radioactive waste immobilization.
Geopolymer Radioactive wastes Zeolite A Thermal Stability Freeze-thaw cycles
Zao Jiang Zhong-hui Xu Qin Shuai Ping Li Ya-Hong Xu
Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry Education, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
国际会议
The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)
重庆
英文
1089-1097
2016-07-25（万方平台首次上网日期，不代表论文的发表时间）