摘要
高炉矿渣作为一种具有潜在胶凝活性的硅铝质原料,在制备矿渣基地聚物方面具有巨大的潜力。重点介绍了四种矿渣基地聚物材料的制备方法和性能,并简要分析了其特点。单一矿渣基地聚物虽然强度较高,但是存在聚合速度快、收缩大以及易开裂等缺点,粉煤灰和偏高岭土的使用可以有效延缓单一矿渣基地聚物的聚合速度、改善其微观结构,增加其稳定性。最后指出,利用低活性的尾矿和矿渣制备地聚物材料为合理利用尾矿提供了一条有效途径。
As a silica-alumina raw material with potential cementitious activity, the blast furnace slag has great potential in the preparation of slag based geopolymer. This paper mainly introduced the preparation methods and performance of four kinds of slag based geopolymer materials, and briefly analyzed their characteristics. Although the single slag based geopolymer has higher strength, it has the disadvantages of high polymerization speed, large shrinkage and easy cracking. The use of fly ash and metakaolin can effectively delay the polymerization speed of single slag based geopolymer, improve its microstructure and increase its stability. In addition, the use of low active tailings and slag to prepare geopolymer materials provides an effective way for the rational utilization of tailings.
作者
刘庆
臧浩宇
王俊祥
吴蓬
吕宪俊
LIU Qing;ZANG Haoyu;WANG Junxiang;WU Peng;L Xianjun(College of Chemical and Environmental Engineering,Shandong University of Science and Technology,Qingdao,Shandong 266590,China)
出处
《山东科技大学学报（自然科学版）》
CAS
北大核心
2019年第3期43-49,共7页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(51674161)
山东省自然科学基金重大基础研究项目(ZR2017ZC0735)
关键词
矿渣
地聚物
碱激发
聚合速度
微观结构
slag
geopolymer
alkaline activation
polymerization speed
microstructure
