铝酸三钙(C_3A)稳定/固化重金属Cr  

Stabilization/Solidification of Heavy Metal Cr Using Tricalcium Aluminate(C_3A)

作　　者：李相国[1] 何超[1] 吕阳[2] 吕振华[1] 王景然[1] 

机构地区：[1]武汉理工大学硅酸盐材料国家重点实验室,武汉430070 [2]比利时根特大学Magnel混凝土研究实验室

出　　处：《武汉理工大学学报》2013年第4期1-5,共5页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51002110);中央高校基本科研业务费专项资金(2012-IV-025)

摘　　要：利用XRD、SEM、水化热、电感耦合等离子体发射光谱(ICP)等研究了Cr对C3A-二水石膏水化的影响以及C3A-二水石膏对Cr的固化效率。结果表明:在水化过程中引入重金属Cr3+,掺杂0.1%～0.5%的重金属Cr能够促进C3A与二水石膏的水化,并且C3A-二水石膏可以有效地固化重金属Cr3+;在烧制过程中引入重金属Cr2O3,C3A的水化活性明显提高,但是此种掺杂方式C3A-二水石膏对重金属Cr的固化效果不明显。Through XRD, SEM, heat of hydration, ICP, et al, the effect of Cr on C3 A-gypsum hydration and the curing efficiency were studied. The results show that, adding 0. 1%-0. 5% Cr could accelerate the hydration speed of C3 A-gypsum, and C3 A- gypsum could solidify heavy metal Cr efficiently when adding Cr3＋ during the hydration process; though the hydration activity of C3A doped heavy metal Cr was obviously improved, C3 A-gypsum couldn＇t solidify heavy metal Cr when adding Cr2 O3 during sintering C3 A.

关 键 词：C3A 重金属Cr 固化 水化 

分 类 号：TQ172.18[化学工程—水泥工业]