A kind of high-strength recycled concrete and preparation method thereof

Abstract

The present application relates to the field of concrete production, and more particularly, to a high-strength recycled concrete and a preparation method thereof. The high-strength recycled concrete includes cement, water, fly ash, sand, recycled aggregate, naphthalene-based water-reducing agent, and reinforcing agent; the preparation method is as follows: firstly, the calcium sulfate whiskers and coumarone resin are uniformly mixed in proportion to obtain Reinforcing agent, and then mixing the reinforcing agent, naphthalene-based water reducing agent, cement and recycled aggregate in proportion to obtain mixture A, and finally mixing mixture A, water, sand and fly ash in proportion to obtain high-strength recycled concrete . The present application has the effect of expanding the use range of recycled concrete.

Description

technical field [0001] The present application relates to the field of concrete production, and more particularly, to a high-strength recycled concrete and a preparation method thereof. Background technique [0002] Concrete is abbreviated as "concrete": it refers to the collective name of engineering composite materials that cement aggregates into a whole by cementing materials. The term concrete usually refers to using cement as cementing material, sand and stone as aggregates; and Water is mixed in a certain proportion, and the cement concrete obtained by mixing is widely used in civil engineering. [0003] With the gradual enhancement of people's awareness of environmental protection, more and more civil engineering has been applied to recycled concrete for construction. Recycled concrete refers to the waste concrete blocks after a series of processing steps, and then mixed with gradation in a certain proportion, partially or completely replacing natural aggregates such...

AI Technical Summary

Problems solved by technology

[0004] The current processing steps of recycled concrete generally include crushing, cleaning, and grading. Among them, when the discarded concrete blocks are broken, it is easy to cause cracks in the original aggregate, resulting in lower mechanical properties of the subsequently prepared recycled concrete. Therefore, most of the current recycled concrete is used in non-structural and non-load-bearing concrete fields such as backfill and roadbed, which limits the scope of use of recycled concrete.

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