Activated Concrete Dust

The valuable secondary raw material in the form of concrete dust is the result of the processing of fine components in regenerated concrete. Concrete dust is generated during the crushing and recycling of concrete, especially in recycling centers and on construction sites, where it subsequently accumulates as waste. These are very fine particles collected in filters to prevent dust from recycling lines when crushing reclaimed concrete. It is basically a cement and aggregate with a coating in sizes ranging from 0.0005 - 0.1 mm. However, angularity, variable particle sizes and a large specific area of dust present complications for further processing of the recovered material. Particular problems include determining the amount of water mixture to match the desired consistency of the prepared mixture.

The unique method of processing concrete dust by activation gives the material excellent mechanical and chemical properties, which are manifested by uniform fineness, increased specific surface area and perfect homogeneity of the mixture.

Standard technological methods do not allow this type of processing. The correct amount of water mixture can be easily determined for such new concrete dust mixtures.