Preparation method of carbon-fixed concrete preform

Abstract

The invention discloses a preparation method of a carbon-fixed concrete preform. The preparation method comprises removing dust in industrial waste gas, mixing the industrial waste gas and air, controlling a desired temperature so that the industrial waste gas and the concrete mixture undergo a carbonation reaction, molding the concrete mixture to obtain a preform, carrying out hardening curing, mixing the carbonized industrial waste gas and de-dusted uncarbonized industrial waste gas, pouring the mixture into a concrete carbon fixation chamber, and carrying out carbonization on the mixed waste gas and the concrete preform so that the industrial waste gas undergoes a carbonization reaction with the concrete preform many times until the preform is cured. The method can fix carbon dioxide inindustrial waste gas during the preparation of concrete performs, reduce the carbon dioxide content of the industrial waste gas and ensure the required strength of the concrete preform.

Description

technical field [0001] The invention relates to a method for preparing a concrete prefabricated part, in particular to a method for preparing a carbon-fixing concrete prefabricated part. Background technique [0002] With the development of society, in order to reduce the environmental pollution of the construction site and shorten the construction time, more and more buildings adopt the form of prefabricated buildings. Because the prefabricated buildings are poured into the indoor site first, and then the Each prefabricated part can be transported to the construction site and assembled directly. This method can not only greatly reduce environmental pollution such as dust on the construction site, but also effectively shorten the construction time of the building. In addition, existing research shows that concrete has the ability to absorb carbon dioxide, and the carbon sink of concrete will occur throughout its life cycle. Due to the aggravation of environmental pollution,...

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Problems solved by technology

[0003] Patent No.: ZL201510031377.8, patent name: "A method of using building materials to manufacture concrete products with carbon sequestration function" discloses a kind of building material reuse and sequestration of carbon dioxide in industrial flue gas to make concrete blocks or porous bricks method, but it only involves mixing building material powder with binder and water to form concrete products, and adding no aggregate will cause the mechanical properties of concrete products to be greatly reduced and easily damaged; at the same time, this method has not yet involved the carbonation reaction with concrete products After the residual industrial flue gas treatment, the negative impact of the high temperature and rich dust of industrial flue gas on concrete products is not considered