Production process of lining-type anti-corrosion reinforced concrete pipe

Abstract

The invention discloses a production process of a lining-type anti-corrosion reinforced concrete pipe, comprising: evenly spreading concrete filled into an inner mould by utilizing centrifugal force generated by high-speed rotation; after extruding and shaping the concrete into a common drain pipe, laying a PVC (poly vinyl chloride) lining with an anchoring key on the inner wall of the shaped concrete pipe; and vibrating and extruding while laying, thus firmly embedding the PVC lining on the surface of the concrete. The production process provided by the invention has the following advantages and beneficial effects: 1, the external pressure load resisting capability of the pipe can be improved, and the use amount of rebars can be lowered in the production process; 2, the PVC lining is tightly combined with the inner wall of the pipe; and 3, the minimum diameter of the pipe shaped by the method can reach 300mm, and the thickness of the wall of the pipe can reach 40mm.

Description

Technical field: [0001] The invention belongs to a concrete component, in particular to a production process of an inner-lined anti-corrosion reinforced concrete pipe. Background technique: [0002] At present, the domestic production of lined anti-corrosion reinforced concrete pipes mainly adopts the method of vertical vibration forming. The mold is mainly composed of an inner mold, an outer mold and a chassis. When forming, the PVC lining is placed on the inner mold, and the steel skeleton is placed between the inner and outer molds, and then concrete is poured between the inner and outer molds, and the lining anchor keys and steel skeleton Buried in concrete, cured and hardened to make anti-corrosion concrete pipes. Although this method is simple to form and easy to operate, its disadvantage is that it is limited by the diameter of the pipe. Generally, pipes with a diameter below 1500mm are difficult to form. The main reason is that the pipe diameter is too small and the...

AI Technical Summary

Problems solved by technology

Although this method is simple to form and easy to operate, its disadvantage is that it is limited by the diameter of the pipe. Generally, pipes with a diameter below 1500mm are difficult to form. The main reason is that the pipe diameter is too small and the mold rigidity is not enough for vertical forming. , easy to bend and tilt, and the wall of the small-diameter tube is thin, so the plug-in vibrator cannot be inserted