Machine-made sand bare concrete and construction technology thereof

Abstract

The invention discloses machine-made sand bare concrete and a construction technology thereof, and specifically relates to the machine-made sand bare concrete. According to the machine-made sand bareconcrete disclosed by the invention, high-quality limestone is adopted for preparing machine-made sand and stones are used as coarse and fine aggregates, and natural river sand and pebbles are replaced, so that the resource of the river sand can be effectively saved, and environmental destruction can be reduced. The invention also provides the construction technology of the machine-made sand bareconcrete. Compared with a traditional method of mixing a defoaming agent into concrete after stirring, a method of painting the defoaming agent on the surface of a template release agent is adopted, surface bubbles of the concrete can be more directly and effectively removed, the surface of the concrete can be flat and smooth, the smooth finish can be up to 95 percent or above, the cost for carrying out engineering decoration on the outer surface again is saved, and the construction cost is reduced.

Description

technical field [0001] The invention relates to a fair-faced concrete and a construction process thereof, in particular to a machine-made sand fair-faced concrete and a construction process thereof. Background technique [0002] Fair-faced concrete, also known as decorative concrete, is widely used in large public buildings and major public facilities because of its great decorative effect. It belongs to one-time pouring molding, which uses the natural texture effect of concrete after molding, without any additional decoration, and directly uses the natural surface of cast-in-place concrete as the decorative surface. Therefore, unlike ordinary concrete, fair-faced concrete requires smooth surfaces and uniform color. [0003] Machine-made sand has been widely used in ordinary concrete in recent years, but due to its gradation and particle shape, it is easy to cause bleeding and segregation of freshly mixed concrete. If it is used to mix fair-faced concrete mixture, the surfa...

AI Technical Summary

Problems solved by technology

This method consumes a lot of river sand resources and seriously damages the environment, and the addition of defoaming agent still cannot eliminate the air bubbles on the surface of fair-faced concrete. After the concrete components are demoulded, the surface finish cannot meet the requirements, which makes many projects generate repeated decoration engineering costs.