固氟脱酸与矿渣改性氟石膏胶结材料  

Fluoride Retention,Deacidification and Improving of Slag to Fluorgypsum Binder

作　　者：吕继锋[1] 杨新亚[1] 王锦华[2] 

机构地区：[1]武汉理工大学材料研究与测试中心,武汉430070 [2]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《硅酸盐通报》2010年第6期1258-1262,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家高技术研究发展计划(863计划)(2009AA064004)

摘　　要：本文通过加入生石灰、无机盐类激发剂JF等化学添加剂对氟石膏进行初步化学改性固氟脱酸,重点研究了矿渣掺量对氟石膏胶结材力学性能和耐水性的影响。结果表明:在氟石膏中添加少量的生石灰能有效地实现固氟脱酸;盐类激发剂JF能明显的缩短氟石膏胶结材的凝结时间,提高胶结材强度,但掺量超过一定值(0.4%)后,氟石膏胶结材水化速率减缓,强度随着激发剂掺量的增加而降低;矿渣在碱性条件下能充分地促进氟石膏水化,生成钙矾石晶体和C-S-H凝胶,提高氟石膏胶结材料的强度和软化系数。In this paper,fluoride retention and deacidification of fluorgypsum binder was studied by adding chemical additives such as CaO,salt activator JF and so on.The impact of slag to fluorgypsum binder on mechanical properties and water resistance has been primarily investigated.The results show that： adding a small amount of CaO can achieve fluoride retention and deacidification effectively;JF can obviously shorten the setting time and improve the strength of fluorgypsum binder,but when adding JF above a certain value（0.4%）,the rate of hydration of fluorgypsum binder will slower and its strength will reduce with the increase of activator;Under alkaline conditions,slag can adequately promote the hydration of fluorgypsum,which creates ettringite crystal and C-S-H gelatin,and improve the strength and softening coefficient of fluorgypsum binder.

关 键 词：氟石膏 固氟脱酸 耐水性 

分 类 号：TU526[建筑科学—建筑技术科学]