Szewczenko Wiktor, Kotsay Galyna
Faculty of Civil Engineering, Mechanics and Petrochemistry, Warsaw University of Technology, 17 Łukasiewicza St., 09-400 Płock, Poland.
Materials (Basel). 2021 Mar 10;14(6):1346. doi: 10.3390/ma14061346.
The concept of the alkaline activity of powdered materials introduced into cement compositions has been proposed, along with methods for its determination. The possibility of using waste glass as an active additive to Portland cement was evaluated from the standpoint of alkaline activity. Replacing the Portland cement component with glass waste in the form of glass powder at amounts from 1 to 35% made it possible to maintain the cement composition's alkaline activity at a level that met the standard requirements. The previously unknown effects of mixed alkali in Portland cement in the presence of glass waste are described. Portland cement has a high potassium alkaline activity; however, container glass has a high sodium alkaline activity and a fairly low potassium alkaline activity. When glass waste is introduced into the structure of cement compositions, potassium alkaline activity is reduced.
已提出引入水泥组合物中的粉末材料的碱性活性概念及其测定方法。从碱性活性的角度评估了使用废玻璃作为波特兰水泥活性添加剂的可能性。用1%至35%的玻璃粉形式的玻璃废料替代波特兰水泥组分，使得水泥组合物的碱性活性能够维持在符合标准要求的水平。描述了在存在玻璃废料的情况下波特兰水泥中混合碱的先前未知的影响。波特兰水泥具有高钾碱性活性；然而，容器玻璃具有高钠碱性活性和相当低的钾碱性活性。当将玻璃废料引入水泥组合物的结构中时，钾碱性活性会降低。
