Preparation and modification of alkaline bricks by using industrial residues and calcium stearate

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• 作者：Chenxu Liu ; Bo Liu ; Xidong Chen ; Jin Zhang ; Wubiao Duan ; Jianping Guo ; Junping Han ; Yanxian Zhang ; Shuxuan Yu and Kunsheng Hu
• 刊名：Environmental Progress & Sustainable Energy
• 出版年：2017
• 出版时间：January, 2017
• 年：2017
• 卷：36
• 期：1
• 页码：21-26
• 全文大小：562K
• ISSN：1944-7450

文摘

New environmentally friendly alkaline bricks were produced with the utilization of industrial residues (alkaline residue and fly ash) as main resources and novel combination of calcium stearate as an addition. By adjusting the ratio of alkaline residue and fly ash, reducing the water cement ratio, the flexural and compressive strengths of the alkaline bricks reached up to 2.5 MPa and 10 MPa, which has reached the corresponding Chinese Testing Standards. Moreover, by adding a small amount of calcium stearate (0.50%, wt), the concentration of extracted chloride ion was decreased by 30% and the resistance to freezing was doubled, which the bricks can be possibly used in the Northern China. In addition, the micro-modification mechanism was provided and the practical application was analyzed.