Construction method for precast beam body by adopting water-based release agent

Abstract

The invention relates to the technical field of bridge construction, in particular to a construction method for a precast beam body by adopting a water-based release agent. The construction method comprises the following steps of (1) formwork treatment, wherein before the release agent is sprayed, a formwork is ground, and concrete, rusty spots and stains adhering to the surface of the formwork are removed; (2) diluting of the water-based release agent, wherein the thickness of an oil film required by demolding is guaranteed according to the solid content of a concentrated water-based mold agent, the density of an oily base material and the usage amount of the release agent per unit area of the formwork, a critical value of diluting the release agent with water is determined, and the release agent is diluted with a dilution multiple not larger than the critical value; (3) release agent spraying, wherein the release agent is sprayed on the surface of the formwork to ensure that coating is uniform and the phenomena of coating leakage and sagging are avoided; (4) steel bar and formwork placement, wherein in the placement process of steel bars and the formwork, the steel bars and the formwork need to be gently taken and placed, the release agent oil film is prevented from being collided and damaged, and before concrete is poured, the formwork needs to be covered with a plastic film to be protected, and exposure to the sun and water erosion are prevented; and (5) concrete pouring.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a construction method for a prefabricated beam body using a water-based release agent. Background technique [0002] Technology in the construction industry has advanced by leaps and bounds in recent years. While people are constantly pursuing a simple, simple, natural and environmentally friendly lifestyle, concrete has gradually developed from being used only as a structural component to a decorative and environmentally friendly building material by virtue of its own characteristics. Fair-faced concrete came into being pregnancy. [0003] In bridge engineering, the structure with clear-faced concrete technical requirements is the visible structural part, and the beam body is an important part of the clear-faced concrete structure in bridge engineering. However, in the prior art, there are problems of appearance quality defects such as color difference and air bubb...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a prefabricated beam body using a water-based release agent construction method to solve the problems of appearance quality defects such as color difference and air bubbles on the surface of the beam body fair-faced concrete, and ensure that the prefabricated surface is smooth and smooth, with uniform color and luster. Fair-faced concrete beams without damage and pollution

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