Forming method for rough surface of precast concrete member

Abstract

The invention discloses a forming method for a rough surface of a precast concrete member. The method comprises the following steps of adhering a double-sided adhesive layer to the inner side of a precast member template; scattering an aluminum powder layer on the double-sided adhesive tape layer; and pouring concrete, removing the precast member template after the concrete meets the requirementsfor template removal, and bonding the aluminum powder layer to the surface of the concrete to form the rough surface. The forming method is economical and environment-friendly, no pollutant is generated in the whole process, the rough area of the surface of the precast member can reach 100%, the use parts are flexible, and the forming method can be used for the horizontal plane or vertical plane of the precast member.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a method for forming the rough surface of a prefabricated concrete component. Background technique [0002] In order to ensure the combination of prefabricated components and cast-in-place concrete, it is often necessary to make the joint part rough, that is, the area of ​​the rough surface should not be less than 80% of the joint surface. Standard JGJ 1-2014 "Technical Regulations for Prefabricated Concrete Structures". [0003] At present, the production process of the rough surface of the existing prefabricated components is as follows: chiseling; sandblasting; roughening; exposed aggregate agent + water washing; using specific molds and other methods. Among them, the chiseling process uses a chisel machine to process a rough surface on the surface of the prefabricated component. During the construction process, the powder is flying, polluting the environment,...

AI Technical Summary

Problems solved by technology

Among them, the chiseling process uses a chisel machine to process a rough surface on the surface of the prefabricated component. During the construction process, the powder is flying, polluting the environment, time-consuming, laborious, low efficiency, and high cost; the sandblasting process uses a sandblasting machine to spray and pour on the surface of the prefabricated component. Slurry, but the treatment depth is shallow, only suitable for plastering the surface, pasting waterproof layer or decorative materials, not suitable for the connection of structural parts, and the dust pollution in the construction process is relatively large; the roughening process adopts artificial roughening, which is only suitable for the sidewall without mold and the roughness of the upper surface of the floor slab and the upper surface of the beam; the exposed aggregate agent + water washing process uses the exposed aggregate agent to apply to the surface of the prefabricated component, and then washes it. The process is complicated, and a special washing station needs to be set up, and the wastewater needs to be treated before it can be discharged. Cement slurry is extremely polluting to the factory environment, which is not conducive to industrial production

Images