Regenerated concrete brick and its preparation method

Abstract

The invention discloses a recycled concrete brick and a preparation method thereof. Every cubic meter of the recycled concrete bricks is prepared from the following raw materials in parts by weight: 365-385 parts of cement, 710-750 parts of sand, 669-709 parts of gravel, 446-486 parts of recycled aggregate, 120-140 parts of water and 1.8-2.2 parts of solvent-type water reducing agent when the substitution rate of the recycled aggregate is 35-45%; or 375-395 parts of cement, 720-760 parts of sand, 436-476 parts of gravel, 679-719 parts of recycled aggregate, 125-145 parts of water and 1.7-2.0 parts of solvent-type water reducing agent when the substitution rate of the recycled aggregate is 55-65%. The method for preparing the recycled concrete brick comprises the following steps: preparing the recycled aggregate, premixing the raw materials, mixing at high speed, carrying out vibration demolding, and curing. The invention has the advantages of high compression strength, high folding strength, favorable use functions, flexible assembly mode, high construction waste utilization ratio, high substitution rate of recycled aggregate, and low production cost, and thus, has favorable popularization prospects.

Description

technical field [0001] The invention relates to a building wall material and a preparation method thereof, in particular to a recycled concrete brick made from construction waste clay bricks as the main raw material and a preparation method thereof, which belongs to the technology of recycling construction waste and also belongs to a It is a building wall material with excellent performance, mainly used for masonry structure load-bearing, frame structure partition wall, etc. in buildings, and is a substitute for traditional fired clay bricks. Background technique [0002] At present, brick wall materials generally used in construction can be divided into fired clay bricks, fired porous bricks, fired hollow bricks, concrete porous bricks, autoclaved fly ash bricks and autoclaved lime sand bricks, but from the perspective of application , traditional fired clay bricks still occupy a huge market share. The main raw material of fired clay bricks is silty or sandy clay, which is...

AI Technical Summary

Problems solved by technology

However, there are still some problems to be solved in this method, that is, how to further reduce the energy consumption of construction waste crushing and how to promote the use of recycled concrete bricks

In addition, there are also common technical problems such as high energy consumption in recycled aggregate processing, high product cost, low product mechanical properties, and poor durability during use.