采用扫描电镜（SEM）和X射线衍射（XRD）等分析技术，探讨了硫酸铝、明矾和工业石膏对糯米灰浆性能的影响及作用机理.结果显示：硫酸铝对于改善糯米灰浆的力学性能、耐冻融性和耐水性均有较大帮助；明矾对糯米灰浆的改善主要表现在力学性能方面；工业石膏对糯米灰浆在力学性能和耐候性方面均未有明显改善；3种添加剂对减缓和减少糯米灰浆收缩均表现出良好的效果.在实际应用中，建议采用一定比例的硫酸铝作为糯米灰浆的添加剂.
The influence of admixtures(aluminum sulfate, alum, gypsum) on properties of traditional sticky rice lime mortar and its scientific mechanism was studied by means of SEM and XRD. Results indicate that addition of aluminum sulfate improves the mechanical property, freeze thaw resistance and water resistance of sticky rice lime mortar significantly. Whereas the addition of alum mostly improves the mechanical property of sticky rice lime mortar. Gypsum has few contribution to improvement of mechanical property and weather resistance of sticky rice lime mortar. All of these three admixtures have favorable effect on slowing down and reducing the shrink of sticky rice lime mortar. Aluminum sulfate should be used as admixtures for sticky rice lime mortar in conservation of cultural relics.
李祖光,方世强,魏国锋,张秉坚.无机添加剂对糯米灰浆性能影响及机理研究[J].建筑材料学报,2013,(3):462-468
复制
