Preparation method of composite reinforced regenerated concrete with regenerated fiber and active minerals

Abstract

The invention relates to a preparation method of composite reinforced regenerated concrete with regenerated fiber and active minerals. Broken waste concrete is adopted as partial regenerated coarse aggregate of the regenerated concrete; meridian steel fiber extracted from waste tyres, fly ash, silicon powder and efficient water reducing agents are added to the waste concrete, so as to improve themechanical performance of the regenerated concrete; the regenerated concrete comprises following substances in part by weight: 13 to 15 parts of 32.5R ordinary portland cement, 20 parts of fine aggregates (medium coarse sand), 36 parts of natural gravel, 15 parts of regenerated coarse aggregates, 1 to 2 parts of silicon powder, 4 to 5 parts of class II fly ash, 0.3 part of efficient water reducing agents, 0.01 part to 0.04 part of meridian steel fiber and 9 parts of water. The preparation method is simple, and the mechanical performance of the regenerated concrete is steady; a novel preparation method is provided for the greenness and environmental friendliness advocated in the field of civil engineering and the application of concrete materials to sustainable circular economy; and the preparation method has a wide future and wide commercial prospect.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to the preparation of composite reinforced recycled concrete, especially a method for preparing recycled fiber composite active mineral material reinforced recycled concrete. Fly ash and silica fume, further adding an appropriate amount of high-efficiency water reducer to improve the performance of recycled concrete prepared from waste concrete. Background technique [0002] For a long time, sand and gravel aggregates have been considered as an inexhaustible raw material because of their wide availability and low price. With the rapid development of the construction industry, the demand for sand and gravel aggregates continues to increase, and due to long-term disorderly and random mining, the resources of sand and gravel aggregates are constantly being exhausted, resulting in the contradiction between the rapid development of the construction industry and the shortage of r...

AI Technical Summary

Problems solved by technology

[0003] The rapid development of the automobile industry has led to a rapid increase in tire production. At the same time, there are more and more waste tires. However, waste tires that are regarded as "black pollution" are simply piled up in the open air, and the polymer elastic materials that are extremely difficult to degrade not only A large amount of encroachment on land resources and more environmental problems

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