Why might recycled aggregates cost more to produce than freshly quarried materials?

Recycled aggregates may cost more to produce than freshly quarried materials due to the additional processing required to clean, sort, and crush the recycled materials. This process can involve specialized equipment and labor, increasing overall production costs. Additionally, the variability in the quality and composition of recycled aggregates can necessitate more rigorous testing and quality control measures, further driving up expenses. Finally, the logistics of collecting and transporting recycled materials can also add to the overall cost.