Specifications for sand making and washing of construction waste

July.04,2025

Sand making of construction waste is to use some of the particles as aggregates after classification, crushing, screening and other treatments of construction waste, add appropriate amounts of cement, mineral powder and other materials for proportioning, and finally make sand making materials with certain strength and stability. In order to ensure the quality and environmental safety of sand making of construction waste, the sand making process must comply with the following specifications:

1. Classification of construction waste
Classify construction waste according to materials and properties for subsequent treatment. Common classifications include concrete, bricks and tiles, steel bars, etc. Classified construction waste can be crushed, screened and processed as needed.

2. Selection of sand making materials
Select appropriate sand making materials according to the properties of construction waste and the requirements of mortar strength. Commonly used materials include crushed stone, river sand, construction waste particles, etc. The selection of sand making materials needs to consider factors such as stone powder content, stone powder shape, stone content, etc., to ensure that the sand made has stable strength and adaptability.

3. Sand making process control
In the sand making process, crushing, cleaning, screening and other links are required. Reasonably set up the process flow and control the process parameters of each link to ensure the stability and consistency of the sand making process. At the same time, implement scientific quality management measures, conduct quality inspections on sand making raw materials, and ensure that sand making materials meet relevant standards.

4. Strength and stability requirements
Sand making materials need to have certain compressive strength and stability to meet the requirements of construction projects. By reasonably adjusting the ratio, controlling the cement mineral powder content and hydration time, suitable sand making material performance can be obtained.