Eight technological achievements of China Construction Western Construction have been granted national invention patents.

Recently, eight technological achievements of China Construction Western Construction have been granted national patents. A technical achievement "a high absorbable phosphogypsum-based all-solid waste permeable concrete and its preparation method" declared

by Jianshang Concrete was authorized by the State Intellectual Property Office for invention patent. This achievement uses a special process to treat phosphogypsum to form cementitious materials and coarse aggregates, and the pervious concrete prepared enhances its permeability under the same mechanical properties as the common pervious concrete, with lower cost and environmental protection; At the same time, it solves the problems of serious storage and difficult treatment of phosphogypsum, waste slurry and slag in ready-mixed plants, and carries out comprehensive resource utilization.

02 "a Mass Concrete for Tunnel and Its Preparation Method"

, a technical achievement declared by Jianshang Concrete, "a Mass Concrete for Tunnel and Its Preparation Method", was authorized by the State Intellectual Property Office. This achievement uses graphene oxide and cellulose nanocrystals as the main raw materials to obtain a composite temperature control agent, which can effectively reduce the temperature difference between inside and outside in the pouring process of tunnel mass concrete, make the temperature uniform in the forming process of concrete, and give consideration to good working performance, mechanical properties and crack resistance.

03 "a Modified Biochar-based Carbon Fixation Cementitious Material and Its Preparation Method"

, a technical achievement declared by Jianshang Concrete, "a Modified Biochar-based Carbon Fixation Cementitious Material and Its Preparation Method", was authorized by the State Intellectual Property Office. This achievement gives full play to the balance and synergy of biochar, high-calcium fly ash and aminosilane, realizes the high-volume and high-value utilization of biochar and high-calcium fly ash in construction engineering, effectively reduces the cement consumption in concrete production, and effectively solidifies carbon dioxide in the air; it has significant economic and environmental benefits, and is suitable for popularization and application.

04 "a kind of recycled concrete and its preparation method and application"

a technical achievement declared by the fifth company, "a kind of recycled concrete and its preparation method and application", was authorized by the State Intellectual Property Office. By optimizing the raw material ratio and preparation process, this technical achievement significantly improves the compressive strength, splitting resistance, tensile strength, freeze-thaw resistance and dry-wet cycle resistance of recycled concrete, which is suitable for road paving and wall construction, and has both environmental protection and practical value.

05 "An Aluminum Template Interface Agent and Its Preparation Method"

, a technical achievement declared by the Ninth Company, "An Aluminum Template Interface Agent and Its Preparation Method", was authorized by the State Intellectual Property Office for invention patents. This technical achievement aims at the industry pain points such as bubbles on the concrete surface and cracks caused by heat loss in the process of aluminum formwork demoulding. Through innovative formula design, polyvinyl alcohol, modified nano-silica and organic bentonite are used as core raw materials, and amide group modification technology is used to improve the dispersion and thermal insulation of nano-silica and build a stable network structure. This technology not only achieves excellent demoulding effect, makes the concrete surface almost bubble-free, but also effectively prevents heat loss, avoids cracks caused by temperature difference between inside and outside, and significantly improves the appearance quality and structural stability of concrete.

06 "a kind of concrete based on recycled fiber and its preparation method"

, a technical achievement declared by the Ninth Company, "a kind of concrete based on recycled fiber and its preparation method", was authorized by the State Intellectual Property Office. This technical achievement focuses on the recycling of waste resources and the upgrading of concrete performance. A composite regenerated fiber system is formed by alkalized glass fiber scraps and modified waste textile fibers. With the synergistic effect of carbonized fillers and mineral admixtures, a three-dimensional ductile support structure is constructed inside the concrete. This technology not only realizes the efficient resource utilization of textile waste, glass fiber scrap and other wastes, but also greatly improves the compressive strength and crack resistance of concrete, which provides a new idea for the greening and high performance of building materials.

07 "a kind of steel slag-slag composite micro-powder green low-carbon concrete and its preparation method"

a technical achievement declared by the Ninth Company "a kind of steel slag-slag composite micro-powder green low-carbon concrete and its preparation method" was authorized by the State Intellectual Property Office. This technical achievement is based on the research results of the key research and development project of Shaanxi Province, Research and Development of Industrial Preparation of High Activity Steel Slag and Slag Composite Powder and Its Application in Concrete (2024GX-YBXM-373). Aiming at the pain points of traditional concrete industry, such as large cement consumption, high carbon emission and low utilization rate of industrial solid waste, this achievement takes modified steel slag microspheres as the core functional component, cooperates with slag powder, cement and other raw materials, and constructs a concrete system with high early strength, excellent crack resistance, low carbon and environmental protection. By loading the activator on the porous steel slag microspheres and encapsulating the phase change material, the dual-function synergy of activity excitation and temperature control in the hydration process of the concrete is realized, and the comprehensive performance of the concrete is obviously improved. In addition, the technology can effectively reduce cement consumption, reduce carbon dioxide emissions, and realize high value-added resource utilization of industrial solid wastes such as steel slag and slag.

08 "a kind of anti-freezing and thawing modified foam concrete and its preparation method"

, a technical achievement declared by Zhongjian New Material, "a kind of anti-freezing and thawing modified foam concrete and its preparation method" was authorized by the State Intellectual Property Office. This technical achievement takes steel slag as one of the main raw materials, and combines steel slag with tetramethylguanidinopropyltrimethoxysilane through the wet grinding process, which significantly improves the activity and stability of steel slag; at the same time, the nano-composite foam stabilizer developed by the R & D team further optimizes the pore structure and mechanical properties of foam concrete, making it lightweight, high strength and excellent freeze-thaw resistance. Through the innovative use of industrial solid waste steel slag, this achievement can solve the environmental problems caused by the accumulation of steel slag, reduce cement consumption and carbon emissions, not only realize the efficient recycling of resources, but also provide new ideas for the low-carbon green development of the construction industry, and actively respond to the national "double carbon" target requirements.