This study developed a novel low carbon super-sulfated cement (SSC) mortar prepared with multiple types of solid wastes, including phosphogypsum and cathode ray tube (CRT) panel glass. The properties of this cement mortar were compared with the OPC/river sand counterpart with respect to durability and environmental performance. The pozzolanic reaction between the active surface of the CRT glass and matrix in the SSC improved the interface performance. The SSC mortar also showed lower water sorptivity associated with the denser microstructures, the finer pore size, and the lower connectivity of pores when compared to the conventional counterpart. Moreover, the high bulk electrical resistance of SSC mortar inhibited ions transport and further improved the durability. Meanwhile, the high sulfate environment and superior uptake ability to alkali ions of the generated C-A-S-H can effectively mitigate the alkali silica reaction-induced expansion in SSC mortar, even when 100% CRT glass aggregates were incorporated. However, the higher volume of mesopores in SSC than in OPC caused a higher drying shrinkage. The SSC provided a more promising outlet for the recycled CRT glass compared to OPC cementitious system in terms of environmental impacts (leaching and carbon footprint). The joint use of low carbon SSC and CRT glass can not only reduce 80% CO₂ emissions by realizing the valorization of multiple types of solid wastes but also achieve better durability over the OPC system.

本研究开发了一种新型低碳超硫酸盐水泥 (SSC) 砂浆，该砂浆由多种固体废弃物制成，包括磷石膏和阴极射线管 (CRT) 面板玻璃。将这种水泥砂浆的性能与 OPC/河沙对应物的耐久性和环境性能进行了比较。CRT 玻璃的活性表面与 SSC 中的基体之间的火山灰反应改善了界面性能。与传统对应物相比，SSC 砂浆还显示出较低的吸水率，与更致密的微观结构、更细的孔径和更低的孔隙连通性相关。此外，SSC砂浆的高体积电阻抑制了离子传输，进一步提高了耐久性。同时，高硫酸盐环境和生成的 CASH 对碱离子的卓越吸收能力可以有效减轻 SSC 砂浆中碱二氧化硅反应引起的膨胀，即使掺入 100% CRT 玻璃骨料也是如此。然而，SSC 中的中孔体积比 OPC 中的中孔体积大，导致干燥收缩率更高。就环境影响（浸出和碳足迹）而言，与 OPC 水泥系统相比，SSC 为回收的 CRT 玻璃提供了更有希望的出路。低碳SSC和CRT玻璃联合使用，不仅可以减少80%的CO 就环境影响（浸出和碳足迹）而言，与 OPC 水泥系统相比，SSC 为回收的 CRT 玻璃提供了更有希望的出路。低碳SSC和CRT玻璃联合使用，不仅可以减少80%的CO 就环境影响（浸出和碳足迹）而言，与 OPC 水泥系统相比，SSC 为回收的 CRT 玻璃提供了更有希望的出路。低碳SSC和CRT玻璃联合使用，不仅可以减少80%的CO_{通过实现多种类型固体废物的价值化来减少2}排放，而且还实现了比 OPC 系统更好的耐久性。