高贝利特硫铝酸盐水泥活化研究进展

基于我国提出的“双碳”战略目标,水泥行业应针对其高碳排放问题制定脱碳计划,因此,低碳水泥的研发和应用迫在眉睫。高贝利特硫铝酸盐水泥是一种在节能减排的同时能够资源化利用含铝工业废弃物的新型低碳水泥,未来也将会是一种具有高强度的低成本水泥。因此,高贝利特硫铝酸盐水泥的研发促进了水泥行业的绿色化发展。然而,水泥矿物组成中高活性无水硫铝酸钙含量较低,导致水泥石早期强度较低。对水泥早期活性进行研究可提升水泥强度,进而扩大其应用范围。本文通过简述高贝利特硫铝酸盐水泥的组成、特点和研究现状,从水泥主要矿物硅酸二钙、无水硫铝酸钙的活化和水泥矿物组成设计优化三个方面总结了影响高贝利特硫铝酸盐水泥活性的因素,旨在为高性能水泥的研制提供理论指导。

Research Progress on Activation of High Belite Calcium Sulphoaluminate Cement

Cement industry should set out its plan for decarbonization, for its massive carbon emissions, to realize the “dual carbon” goal proposed by the Chinese government. Therefore, the design and application of low carbon cement are in great need. High belite calcium sulphoaluminate cement is a new type of low carbon cement, that not only saves energy and reduces carbon emissions, but also utilizes aluminium containing solid waste in its production. Besides, it is also a low-cost cement with high strength in long term. Based on these features, the development of high belite calcium sulphoaluminate cement shows great promise for the sustainability of cement industry. However, high belite calcium sulphoaluminate cement faces challenges to improve its early-age strength as it contains limited content of ye’elimite in cement clinker. Research on the activation of the cement at an early age improves its strength and broaden its application. This paper reviews the composition, characteristics and research status of the high belite calcium sulphoaluminate cement. Activations of high belite calcium sulphoaluminate cement are summarized in the three aspects of dicalcium silicate, ye’elimite and the design optimization of cement mineral composition. The aim is to provide a theoretical guidance for development of high performance cement.