As a typical solid waste from the iron and steel,the mechanical properties of steel slag are regarded as the core basis for realizing its resource recycling.To explore the influence of shape and external loading speed...As a typical solid waste from the iron and steel,the mechanical properties of steel slag are regarded as the core basis for realizing its resource recycling.To explore the influence of shape and external loading speed on the crushing characteristics of steel slag,single particle crushing tests were carried out.The research focuses on the correlation between parameters such as the load−displacement relationship of single particles,crushing mode,crushing energy,and Weibull modulus,as well as external loading rate and quantified morphological parameters.The results show that the single particle crushing modes of steel slag mainly consist of three modes:through-splitting,complete fragmentation and local cutting;Compared with natural aggregates or recycled materials,steel slag particles are found to potentially exhibit higher compressive strength and the increase in loading rate further accelerates the occurrence of particle crushing behavior;Significant impacts on the crushing mode and characteristic stress of steel slag particles are exerted by their shape differences,and the energy release mode is jointly regulated by shape and loading rate.This research provides theoretical guidance and technical support for the diversified utilization of steel slag single particles,a new type of solid waste resource.展开更多
基金Project(52025085)supported by the National Science Foundation for Distinguished Young Scholars of ChinaProjects(52208421,52408394)supported by the National Natural Science Foundation of China+2 种基金Project(2023JJ40050)supported by the Hunan Provincial Natural Science Foundation,ChinaProject(2024JJ1001)supported by the Science Fund for Creative Research Groups of Hunan Provincial Natural Science Foundation,ChinaProject(kfj210201)supported by the Open Fund of the Key Laboratory of Highway Engineering of Ministry of Education(Changsha University of Science&Technology),China。
文摘As a typical solid waste from the iron and steel,the mechanical properties of steel slag are regarded as the core basis for realizing its resource recycling.To explore the influence of shape and external loading speed on the crushing characteristics of steel slag,single particle crushing tests were carried out.The research focuses on the correlation between parameters such as the load−displacement relationship of single particles,crushing mode,crushing energy,and Weibull modulus,as well as external loading rate and quantified morphological parameters.The results show that the single particle crushing modes of steel slag mainly consist of three modes:through-splitting,complete fragmentation and local cutting;Compared with natural aggregates or recycled materials,steel slag particles are found to potentially exhibit higher compressive strength and the increase in loading rate further accelerates the occurrence of particle crushing behavior;Significant impacts on the crushing mode and characteristic stress of steel slag particles are exerted by their shape differences,and the energy release mode is jointly regulated by shape and loading rate.This research provides theoretical guidance and technical support for the diversified utilization of steel slag single particles,a new type of solid waste resource.
