Pipeline quality of grouting post-tensioned bridge an important factor in durability. Traditional construction methods are in the pipeline to protect the infusion prestressed reinforced cement paste does not rust, cement paste when there is not dense perfusion failure or other reasons, the prestressed prone to corrosion phenomenon, affecting structural durability. By comparison and selection of raw materials, optimized ratio for performance, mechanical properties, swelling properties, such as steel corrosion performance tests, the successful production of TK-G products pipeline grouting agent instead of traditional construction methods using cement paste perfusion. Tests showed that the development of products with filling of good, no delamination, no bleeding, slight expansion, does not rust steel, high strength characteristics, the use of grouting agents can be developed to improve the quality of grouting pipes to ensure the normal life of the bridge . At present, the product has obtained national invention patents and more than a dozen high-speed railway construction applications, and achieved good social and economic effects.
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