1 results about "Common Duct" patented technology

This invention relates to a simulation test method for grouting of prestressed concrete bridge ducts, characterized by the following specific test steps: S1: Test design; S2: Equipment and material preparation; S3: Test commencement. This method addresses the problem that common duct grouting construction techniques, processes, and requirements cannot meet the needs of new grouting materials and equipment, such as "grouting from the lowest point." Some construction techniques have theoretical flaws, such as "flushing the duct before grouting and blowing away accumulated water with high-pressure air," and some lack reliable theoretical and practical basis. Therefore, it is necessary to study the influencing factors of duct grouting construction techniques based on current grouting materials, summarize the main factors affecting duct grouting quality, and propose an operable grouting process method.