The occurrence of MgO and its influence on properties of clinker and cement: A review
The occurrence of MgO and its influence on properties of clinker and cement: A review
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DOI：
10.1016/j.conbuildmat.2021.123494
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发表时间：
2021-07
影响因子：
7.4
通讯作者：
Song Qiang;Jiahao Su;Jiaorong Nie;Hui Li;Hu Yaru-;Yanxin Chen;Ruxian Li;Yang Deng
中科院分区：
文献类型：
--
作者：
Song Qiang;Jiahao Su;Jiaorong Nie;Hui Li;Hu Yaru-;Yanxin Chen;Ruxian Li;Yang Deng
MgO对熟料的易烧性、相组成、矿物晶体多晶性、水泥强度和体积稳定性等性能有重要影响。此外，它还影响C3S的活性、水泥的水化速率以及水化产物。阐述了MgO在水泥熟料和水化产物中的赋存状态及其对熟料和水泥性能的影响。结果表明，优化原料配比和调整热处理制度可改善熟料中Mg 2+的赋存状态。此外，这些措施减少了方镁石在添加富含硅和铝的辅助胶凝材料以形成非膨胀性的含镁水合物如水合硅酸镁时的膨胀。
MgO significantly influences clinker properties such as burnability, phase composition, mineral crystal polymorphism, cement strength, and volume stability. Moreover, it influences the activity of C3S, the rate of hydration of cement, as well as hydrates. This paper elaborates on the occurrence of MgO in cement clinker and hydration products and its influence on the properties of clinker and cement. Resultantly, optimizing the proportions of raw materials and modifying the thermal processing system improve the occurrence of Mg2+in clinker. Furthermore, these measures reduce the expansion of periclase upon addition of supplementary cementitious material rich in silicon and aluminum to form non–expansive hydrates bearing magnesium such as hydrated magnesium silicate.