Hengyang square culvert prefabrication, mold processing and manufacturing, pipe gallery design and construction of urban underground lifeline

The prefabricated reinforced concrete square culvert (underground pipe gallery) independently developed by our company adopts the vibration process and uses dry hard concrete to produce a square culvert with uniform composition without delamination, segregation, bleeding and other phenomena. Good physical properties, high bulk density, high strength, high impermeability, strong hydration heat, low shrinkage, small hardening, fast overall molding, and quick release. The concrete strength reaches the concrete impermeability grade. The production technology and equipment are at the domestic advanced level. The product production process has achieved model standardization and industrialization. Production efficiency, high quality and stable control. The interface is sealed with rubber rings that expand when exposed to water. Each four-section square culvert is assembled into a group and is tensioned and locked with prestressed steel strands. It has good anti-settlement load-bearing and waterproof performance. It is easy and convenient to construct and install on site.