摘   要：制备了锂渣粉-钛矿渣粉、锂渣粉-花岗岩粉2种复合掺合料，测试了其活性和流动性，研究了其对混凝土工作性和力学性能的影响，确定了合适的m_锂渣粉∶m_钛矿渣粉、m_锂渣粉∶m_花岗岩粉。基于此，为了便于实际工程应用，制备了2种锂渣基辅助胶凝材料Z1、Z2。结果表明：综合考虑复合掺合料的活性、流动性及其对混凝土工作性和力学性能的影响，推荐m_锂渣粉∶m_钛矿渣粉、m_锂渣粉∶m_花岗岩粉均为6∶4；Z1、Z2分别满足相关标准中Ⅱ级、Ⅲ级复合掺合料的要求，且其等质量取代100%矿粉对混凝土的工作性和力学性能影响不大，同时能提高混凝土的耐久性能。

Abstract: Two composite admixtures (lithium slag powder-titanium slag powder and lithium slag powder-granite powder) were prepared, and their activity and flowability were tested, and the effects of the composite admixtures on the workability and mechanical properties of concrete were studied. Based on this, the suitable m_{lithium slag powder}∶m_{titanium slag powder} and m_{lithium slag powder}∶m_{granite powder} were determined. Two lithium slag based supplementary cementitious materials Z1 and Z2 were prepared for practical engineering applications. The results show that considering the activity, flowability of the composite admixture and its impact on the workability and mechanical properties of concrete, it is recommended that both mlithium slag powder∶mtitanium slag powder and mlithium slag powder∶mgranite powder be 6∶4. Z1 and Z2 meet the requirements of Class Ⅱ and Class Ⅲ composite admixtures in relevant standards respectively, and replacing 100% mineral powder with Z1 or Z2 has little impact on the workability and mechanical properties of concrete, and can improve the durability of concrete.