Research on Alkali-Activated Systems Based on Solid Waste-Derived Activators: A Review

被引:3
作者
Wan, Xiaomei [1 ,2 ]
Ren, Lijie [1 ]
Lv, Tingjian [3 ]
Wang, Dengke [1 ]
Wang, Boshi [1 ]
机构
[1] Qingdao Univ Technol, Sch Civil Engn, Qingdao 266520, Peoples R China
[2] Cooperat Innovat Ctr Engn Construct & Safety Shand, Qingdao 266520, Peoples R China
[3] CCCC Construct Grp Co Ltd, Beijing 100022, Peoples R China
基金
中国国家自然科学基金;
关键词
solid waste; alkali-activated system; activator; cementitious materials; RICE HUSK ASH; FLY-ASH; SODIUM-HYDROXIDE; SILICA; GLASS; GEOPOLYMERS; STRENGTH; CONCRETE; BINDERS; POWDER;
D O I
10.3390/su17010254
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The development of solid waste-derived activators for the preparation of alkali-activated systems is of great significance for further enhancing the environmental friendliness and sustainability of alkali-activated materials. In this review, the potential feasibility of applying solid waste-derived activators to prepare alkali-activated systems is explored. Through a discussion of alkali-activation mechanisms, the effect of activators on high-calcium and low-calcium systems is highlighted first. The properties and limitations of commonly used industrial-grade alkali activators are reviewed next. Finally, recent reports on waste-derived activators in alkaline activation systems are summarized, revealing the advantages and development trends of solid wastes with CaO, K2O/Na2O, and SiO2 as the main components of effective substitutes for alkaline industrial exciters.
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页数:23
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