Chinese scientists have developed a new type of construction binder material, "Ningshi," which mimics natural rock formation. Made by finely grinding industrial waste products such as metallurgical slag, fly ash, and coal gangue, and then "coalescing" them into stone, Ningshi outperforms ordinary cement in several aspects, including strength, density, corrosion resistance, production costs, and clean production. The Ningshi technology is a research outcome of the National High-Tech Research and Development Program (i.e., the 863 Program). Invented by Professor Sun Henghu of Tsinghua University, this high-tech solution with complete independent intellectual property rights has been awarded multiple national patents. The technology was successfully evaluated by the Ministry of Education on the 12th, and the next step will be to request the certification from the relevant department of the 863 Program.

Geological studies reveal that materials such as natural volcanic ash can transform into long-lasting aluminosilicate rocks through sedimentation and metamorphism under normal temperature and pressure conditions. The "coagulation stone" technology, based on the principles of terrestrial lithification, primarily utilizes various industrial waste products (such as metallurgical slag, fly ash, coal gangue, red mud, and other industrial solid waste) as raw materials. It is supplemented with a small amount of lithifying agents, producing high-performance new building materials—silicon-alumina-based cement products—under normal temperature and pressure.

Experts believe that "Ning Shi" has multiple advantages over regular cement, such as: the production process utilizes "cold operation," saving energy and not emitting carbon dioxide; significantly reduces dust during production, without damaging natural resources or polluting the environment; "Ning Shi" concrete boasts excellent properties in terms of strength, density, corrosion resistance, and freeze-thaw resistance; it can use various waste residues as raw materials, with a "waste consumption" rate exceeding 90%, making it an effective waste treatment method; low production costs and a simple process, and more.