摘要
固硫灰渣的处理以及环保型激发剂材料的开发是防止环境二次污染的有效途径。本文开发了一种有机醇胺TEA-无机激发剂M-无机盐复合激发剂,通过SEM、FTIR、XRD等测试方法对所制备的复合激发剂进行表征,先后探索了M、TEA-M、TEA-M-无机盐三个系列的激发剂对水泥胶砂流动度比和抗压活性指数的影响。结果表明,TEA的助磨作用改善了颗粒的粒径,无机激发剂M能影响参与水化反应的Ca(OH)_(2)含量,无机盐CaSiO_(3)后期会产生C-S-H并提供碱性条件。复合激发剂中的不同材料间的协同作用使水泥胶砂7和28 d的抗压活性指数分别提高了29个和18个百分点(与空白样相比),并且胶砂净浆的流动度比仍然保持在较高水平。本文为固硫灰渣提供了一种环保型的复合激发剂材料,促进了固硫灰渣的绿色化应用。
The treatment of fluidized bed combustion ash and slag(FBC)and the development of environmentally friendly activator material are the effective way to prevent environmental secondary pollution.An organic ethanolamine TEA-inorganic ethanolamine M-inorganic salt composite activator was developed,and the performance of the material was optimized.And the micromorphology,chemical composition and performance changes of the materials were analyzed by SEM,FTIR,XRD and other characterization methods.The influences of three series of activators,M,TEA-M and TEA-M-inorganic salt on the fluidity ratio and compressive activity index of cement slag were explored.The results show that the grinding effect of TEA improves the particle size.The inorganic activator M can affect the content of Ca(OH)_(2) participating in hydration reaction.The inorganic salt CaSiO_(3) may produce more C-S-H in the later stage and provide alkaline condition.The synergistic effect of different materials in the composite activator increases the compressive activity index of cement slag by 29 and 18 percentage points at 7 and 28 d(compared with the blank sample),respectively,while maintaining the fluidity ratio of cement mortar at a high level.This study provides an environmentally friendly activator composite material to promote the green application of FBC.
作者
伍媛婷
王媛晨
王昭
刘虎林
王巍
任思谦
花春峰
WU Yuanting;WANG Yuanchen;WANG Zhao;LIU Hulin;WANG Wei;REN Siqian;HUA Chunfeng(School of Materials Science and Engineering,Shaanxi University of Science&Technology,Xi’an 710021,China;Shaanxi Zhengyuan Environmental Protection Technology Industry(Group)Co.,Ltd.,Xi’an 712085,China)
出处
《硅酸盐通报》
CAS
北大核心
2024年第2期572-583,共12页
Bulletin of the Chinese Ceramic Society
基金
陕西高校青年创新团队项目(2022-70)
混凝土超细掺合料项目(210200148)。
关键词
固硫灰渣(FBC)
水泥掺合料
激发剂
有机醇胺
流动度比
抗压活性指数
fluidized bed combustion ash and slag(FBC)
cement mixture
activator
organic ethanolamine
fluidity ratio
compressive activity index
