Core Viewpoint - The completion of the Wuma Expressway segment in Ningxia marks a significant achievement in utilizing industrial solid waste for road construction, promoting both economic and ecological benefits [1][3]. Group 1: Project Overview - The Wuma Expressway segment from Huinong to Shizuishan spans 57 kilometers and has been constructed using over 3.8 million tons of industrial solid waste, including fly ash, coal gangue, and slag [1]. - This project is recognized as one of the first national green low-carbon advanced technology demonstration projects [1]. Group 2: Technological Innovations - The technical team conducted extensive research, sampling over 20,000 samples from more than 30 factories along the route, discovering that industrial solid waste has advantages such as higher compressive strength and wear resistance compared to traditional materials [2]. - A total of 15 key technologies were developed, including a method to create a "super concrete" by mixing eight types of solid waste with self-developed green cementing materials, resulting in a material that outperforms high-strength concrete [2]. Group 3: Environmental Impact - The project has led to the comprehensive utilization of over 1 million tons of coal gangue, restoring nearly 500 acres of land previously contaminated by coal gangue [3]. - The use of over 3.8 million tons of industrial solid waste has saved nearly 3 million tons of sand and 80,000 tons of cement, while reducing carbon emissions by over 60,000 tons [3]. Group 4: Future Plans - Ningxia plans to replicate the successful experience of this project in new initiatives such as the Yinkun Expressway and explore further applications of solid waste materials in the construction sector [3]. - The goal is to achieve a comprehensive utilization rate of industrial solid waste of 75% by 2030, supported by ongoing technological innovation [3].