Production method of sand blast fair-faced concrete

Abstract

The invention relates to the field of buildings and particularly relates to a production method of sand blast fair-faced concrete. The production method comprises the following steps of a, carrying out sand blast treatment on a molding surface of a mould, wherein the particle size of the blasted fine sand is smaller than 1.5mm, and the color of the sand blasted on the molding surface of the mould is uniform; b, placing a steel reinforcement cage into the mould; c, pouring the stirred concrete into the mould, and screeding the upper surface of the concrete in the mould; and d, dismounting the mould after the strength of the concrete meets the requirement, and spraying a protective agent on the fair-faced surface of the molded concrete to obtain the sand blast fair-faced concrete. The fine sand is sprayed on the molding surface of the mould, and flaws on the molding surface of the mould are removed, so that the molding surface of the mould is more smooth and is uniform in color, pot holes in the surface of the concrete are avoided, the concrete is molded at one time without mending, the concrete is kept uniform in veneering color and free of air bubbles and has a matting effect, the construction cost is further reduced, and the work efficiency is increased.

Description

technical field [0001] The invention relates to the construction field, in particular to a production method of sandblasting fair-faced concrete. Background technique [0002] Fair-faced concrete (As-cast Finish Concrete / Bare Concrete) is also known as decorative concrete; it gets its name because of its very decorative effect. it belongs once pouring Forming, its surface has the texture of natural stone, and it can be smooth and clean without any decoration. Therefore, the surface quality of the mold for producing fair-faced concrete directly affects the decorative surface of fair-faced concrete. [0003] However, after repeated use of the current mold for producing fair-faced concrete, many rubbish and rust spots that are not easy to clean are easily stuck on the surface. There are potholes, which need to be repaired and plastered, which wastes a lot of financial and material resources and increases the project cost. Moreover, chromatic aberration is prone to occur in t...

AI Technical Summary

Problems solved by technology

[0003] However, after repeated use of the current mold for producing fair-faced concrete, many rubbish and rust spots that are not easy to clean are easily stuck on the surface. There are potholes, which need to be repaired and plastered, which wastes a lot of financial and material resources and increases the project cost

Moreover, color difference is prone to appear in the repaired place, which seriously affects the decorative effect of fair-faced concrete and reduces the quality of fair-faced concrete.