粉煤灰
耐水性
水泥
材料科学
镁
抗压强度
傅里叶变换红外光谱
磷酸镁
复合材料
化学工程
冶金
工程类
作者
Bowen Guan,Zhenqing He,Fulu Wei,Faping Wang,Jincheng Yu
出处
期刊:Polymers
[MDPI AG]
日期:2022-12-29
卷期号:15 (1): 172-172
被引量:5
标识
DOI:10.3390/polym15010172
摘要
The application of magnesium oxychloride cement (MOC) is promising, but its poor water resistance seriously hinders its development and application. In this paper, we describe a new type of MOC with excellent water resistance, prepared using fly ash and hexadecyltrimethoxysilane (HDTMS). SEM, XRD, FTIR, TG/DSC, and other microscopic-scale studies were conducted to investigate the mechanism underlying the water-resistance enhancement of the new MOC. It was found that adding 20% fly ash and 3% HDTMS can strengthen the water resistance of MOC while retaining high mechanical properties. In particular, the residual coefficient remained at 0.91 after 7 days of immersion. This is because these two additives, when used together, can increase the content of the gelling 5-phase of MOC, as well as optimize the pore structure of MOC.
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