Prestressing Grout for Bridge & Construction Engineering

Prestressing grout is a special material customized for post-tensioned prestressed ducts of bridges, high-speed railways and tunnels, fully complying with road and bridge engineering standards. It features zero bleeding, high fluidity, micro-expansion and chloride-free formula without corroding steel strands, specially used for prestressed tendon protection and dense duct filling. Ordinary grout is mainly for equipment foundation reinforcement and cannot meet the strict requirements of high prec

Widely used in post-tensioned prestressed duct grouting projects for highways, railways, high-speed bridges, tunnels, high-speed railway precast box girders and municipal prestressed beam slabs. It is suitable for filling and anchoring of various prestressed steel strands and corrugated pipes, serving as the core special material for large traffic infrastructure projects.

Constructed by mixing dry powder with water with strictly controlled standard water-binder ratio; random on-site water addition is prohibited. Adopt high-speed mixer for even mixing without agglomeration to ensure excellent fluidity. Use continuous grouting process and complete pouring at one time without interruption. Never re-add water to failed slurry for reuse, ensuring dense, void-free and delamination-free duct filling.

Adopts chloride-free eco-friendly formula without harmful corrosive ingredients, which can protect prestressed steel strands from rust and corrosion for a long time. The hardened body has dense structure with excellent impermeability, frost resistance, aging resistance and acid & alkali erosion resistance. It isolates water vapor and air to prevent prestressed tendons from oxidation failure, ensuring strong structural stability for long-term service of large outdoor infrastructure projects.