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CaO-Al₂O₃-P₂O₅-SiO₂体系耐水性及其机理初探

Study on Water-resistance Property of CaO-Al₂O₃-P₂O₅-SiO₂ System

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【Author】 Ren Shuxia~1, YangDan~2, ZhangXiqing~1(1.Department of Material Science and Engineering, Shijiazhuang Railway Institute, Shijiazhuang 050043, China; 2. Shijiazhuang Armed Police College of PLA,Shijiazhuang050043, China)

【机构】石家庄铁道学院材料科学与工程分院；武警石家庄指挥学校训练部；石家庄铁道学院材料科学与工程分院河北石家庄050043；河北石家庄050061；河北石家庄050043；

【摘要】通过对耐水性指数、力学性能及离子溶出浓度等参数的测定,以及运用XRD、SEM和压汞测孔法等手段,分析了CaO-Al₂O₃-P₂O₅-SiO₂体系的耐水性机理。结果表明,C-A-P-S体系的水化产物具有良好的化学稳定性、难溶,且其主要矿相LS.S有连续与水反应生成水化磷铝酸钙的特性,因而该体系硬化浆体在长期浸水的的情况下仍具有优异的孔结构,从而表现出良好的耐水性。更多还原

【Abstract】 The mechanism of water-resistance of CaO-Al₂O₃-P₂O₅-SiO₂ system is analyzed based on the water-resistance property and other parameters measured with the techniques of XRD,SEM and mercury intrusion porosimetry. The results show that CaO-Al₂O₃-P₂O₅-SiO₂ system holds good water-resistance property because of high stable hydrates, excellent pore structure and self- restoring performance.更多还原