The concrete grade should not be greater than C30 (recycled aggregates from waste concrete), and the concrete grade should not be greater than C20 (recycled aggregates from waste bricks).
3.
Recycled bricks: Waste concrete aggregates should be produced in grades MU15 or above, while waste brick aggregates should be produced in grades MU10 or MU7.5.
Types of recycled products for construction waste: recycled coarse and fine aggregates, recycled bricks, recycled concrete, recycled inorganic mixtures, recycled mortar, recycled tiles, recycled blocks The purpose of building waste recycling products: 1.
• Recycled fine aggregate is a particle with a nominal particle size greater than 0.5mm but less than 5mm obtained by crushing and processing waste concrete blocks.
It is suitable for general structural and non structural engineering
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The information express ZIXUNZHITONGCHE is an important part of the development of circular economy, and it is an effective way to completely solve the problem of urban construction waste.
Recycled concrete: In principle, recycled aggregates should be mixed with ordinary aggregates, and the content of recycled coarse and fine aggregates should not exceed 50%.
It can be used to produce terminal building materials such as ready-mixed mortar, commercial concrete, and permeable bricks, thereby realizing the resource recycling and utilization of construction waste.
2.
It can effectively alleviate the situation of resource scarcity and environmental pollution, and achieve social, economic, and environmental benefits.
Recycled ordinary bricks with a grade of MU10 or above are suitable for load-bearing walls in low rise buildings, and recycled ordinary bricks with a grade of MU10 or below are suitable for non load-bearing walls; Regenerated ancient building bricks are suitable for load-bearing and non load-bearing walls of antique buildings.
Recycled coarse and fine aggregates: used for the production of recycled bricks, recycled concrete, recycled inorganic mixtures, recycled mortar, recycled blocks, recycled tiles, etc.
The use of recycled aggregates should reach over 90%.
It can partially replace natural fine aggregate for various load-bearing non load-bearing blocks, and can also replace construction sand for producing non load-bearing wall materials or for producing recycled building mortar.
A small portion of recycled concrete obtained by replacing natural aggregates has mechanical properties similar to ordinary concrete.
Classification of recycled aggregates for construction waste: Recycled aggregates are divided into recycled coarse aggregates and recycled fine aggregates based on their nominal particle sizes: • Recycled coarse aggregates are particles with a nominal particle size greater than or equal to 5mm but less than 40mm obtained by crushing and processing waste concrete blocks, which can partially replace natural aggregates for concrete production.
Construction waste undergoes processes such as crushing, screening, iron removal, light material sorting, grinding and dust collection to obtain high-quality recycled building materials such as coarse aggregate, fine aggregate, and recycled micro powder.
