矿渣对氯氧镁水泥宏观性能与微观结构的影响
DOI:
https://doi.org/10.70693/cjst.v2i2.1927Keywords:
氯氧镁水泥;矿渣;宏观性能;微观结构;物相组成Abstract
为了提升氯氧镁水泥(MOC)的宏观性能与微观结构,本文采用矿渣取代部分轻烧氧化镁制备MOC,研究了矿渣掺量对MOC凝结时间、体积稳定性及抗压强度的影响规律,并借助微观测试手段探究了矿渣掺量对MOC物相组成及微观形貌的影响。结果表明:当矿渣掺量为10%~40%时,矿渣的掺入使MOC的凝结时间延长,且掺量越大,MOC的凝结时间越长;在水化过程中,MOC硬化浆体先膨胀后收缩,矿渣的掺入提高了MOC的体积稳定性;随着矿渣掺量的增加,MOC的抗压强度呈先升后降趋势,掺量为10%时达到最大值;矿渣的掺入并未改变MOC的物相组成,通过微集料效应和火山灰活性优化基体结构。
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