RJ-HPSC high-performance shotcrete is a new material for shotcrete construction that has been jointly developed by Renjian Baogu Technology Center, Central South University, Changsha University of Science and Technology, Hunan Vocational and Technical College of Transportation, Hunan Tengda Geotechnical Engineering Technology Co., Ltd., and other institutions through years of hard work. The technology consists of a complete set of techniques such as high-performance shotcrete materials, shotcrete construction processes, and shotcrete equipment. Mainly used in non excavation construction, repair, reinforcement, waterproofing, anti-corrosion, etc. for highways, high-speed railways, bridges, tunnels, airports, ports, dams, building structures, urban underground sewage and drainage pipelines. Especially in situations where the project schedule is tight, material requirements are high, the working face is complex, and construction conditions are difficult, using HPSC spray construction can achieve good results and solve the technical problem of high-performance concrete that cannot be sprayed for many years.

RJ-UHPSC ultra-high performance shotcrete is a new material for shotcrete that can be used in shotcrete construction, developed by the Renjian Baogu Technology Center in cooperation with Central South University, Changsha University of Science and Technology, Hunan Vocational and Technical College of Transportation, Hunan Tengda Geotechnical Engineering Technology Co., Ltd. This material is mainly used for non excavation construction, repair, reinforcement, waterproofing, anti-corrosion, etc. in highways, high-speed railways, bridges, tunnels, airports, military ports, port terminals, dams, urban underground structures, sewage and drainage pipelines, etc. Especially in situations where the project schedule is tight, material requirements are high, the working face is complex, and construction conditions are difficult, the use of UHPSC ultra-high performance shotcrete construction can achieve good results, solving the technical problem that ultra-high performance concrete cannot be shotcrete construction for many years. The research and development achievements have reached the international advanced level.