CNBM Zhongyan Technology Co., Ltd. was established in 1992. It is affiliated with China National Building Material Group (CNBM), a Fortune Global 500 company, and is a holding enterprise of the China Building Materials Academy (CBMA). The company originated from the China Cement-based Materials Research Center and has built a solid foundation in the field of special engineering materials. After more than 30 years of development, the company has formed four major product and service segments: chemical building materials, special cement-based materials, protection, repair and strengthening materials, and bonding and sealing materials. Serving both domestic and overseas markets, it is a comprehensive technology enterprise integrating R&D, manufacturing, sales, and specialized construction services.

The company operates multiple R&D platforms, including the Engineering Technology Center for Protection, Repair and Strengthening Materials in the Building Materials Industry and the Beijing Enterprise Technology Center. It has obtained certifications for quality management, environmental management, occupational health and safety management, and intellectual property management systems, and has secured CRCC Certification for railway products, Green Building Material Product Certification, and classification society certification, along with multiple qualifications for specialized construction works. Its products and technologies with independent intellectual property rights have been widely applied in major projects such as railways, highways, wind power, nuclear power, airports, bridges, tunnels, and super high-rise buildings.

Business Segments

• Chemical Building Materials

Concrete admixtures: water-reducing agents, accelerators, early-strength agents, anti-freezing agents, viscosity-reducing agents, expansive agents, anti-corrosion and corrosion-inhibiting agents, non-dispersible underwater concrete flocculants, wet-mix mortar admixtures

Cement additives: grinding aids, coal-saving agents, desulfurizers, chromium-removal agents, NOx treatment agents

Other chemical additives: release agents, stone dispersants, gypsum dispersants

• Protection, Repair and Strengthening:

Product series: concrete damage repair materials, chemical grouting materials, water-stopping, strengthening and leakage-plugging materials, chemical lifting materials, repair and strengthening mortars, waterproofing materials, inorganic composite insulation systems, (in)organic flooring systems

Integrated technologies: protection and repair technology for ballastless track slab concrete, remediation technology for mud pumping and slurry bleeding in track slabs, track alignment correction and lifting technology, precision track adjustment and surveying technology, pre-strengthening technology using planted rebars for upward-arched structures

• Special Cement-based Materials

Wind power series: onshore wind power bedding mortar and grouting materials, offshore wind power grouting materials, pile protection and soil solidification materials

Prefabricated building series: sleeves and accessories, sleeve grouting materials, sealing mortars

Other special materials: UHPC, ECC, backfill solidification materials, grouting materials for large equipment installation

• Bonding and Sealing Materials

Bonding adhesives: epoxy jointing adhesive, steel plate bonding and steel grouting adhesive, impregnation resin, CFRP plate adhesive, planting rebar adhesive, two-component reactive epoxy adhesive, elastic epoxy adhesive, granule adhesive

Sealants: butyl sealant, TPSS sealant, silicone sealant, MS sealant

Selected Application Cases

• South-to-North Water Diversion Project (Middle Route): water-reducing agent

• National Speed Skating Oval: expansive agent and ultra-long seamless construction technology

• Rizhao-Lankao High-speed Railway: accelerator

• Guiyang–Guangzhou High-speed Railway: grouting for base slab gap injection

• CNBM Zhongyan Technology Co., Ltd. at the 7th China Concrete International Expo in Guangzhou