赤泥基全固废胶凝材料的组成设计与生命周期评价OA

[Purposes]Amidst the backdrop of accelerated urbanization and expanded industrializa-tion,the demand for cement as a primary building material continues its upward trajectory.However,the production process of cement,characterized by its high energy consumption and pollution,impos-es a significant burden on the environment.Solid waste-based cementitious materials emerge as a via-ble alternative,promising not only to alleviate the demand for cement,but also to mitigate environ-mental pollution through the resource utilization of waste materials.[Methods]In this context,the utilization of industrial solid wastes such as red mud,steel slag,fly ash,and phosphogypsum was pro-posed to craft red mud-based cementitious materials with varying compositions,followed by in-depth analyses of compressive strengths.Concurrently,the lifecycle assessments of both cement and red mud-based cementitious materials were conducted by leveraging SimaPro software.[Results]The findings reveal that quaternary cementitious materials based on red mud exhibit remarkable compres-sive strength and surpass traditional cement across diverse environmental impact categories,resulting in a 12%reduction in environmental burdens.In conclusion,this study offers both theoretical founda-tions for the development of environmentally friendly building materials and empirical evidence to pro-mote the application of eco-friendly cementitious materials.