In-Place PCC Recycling is the method of utilizing larger maximum particle size with a proper gradation for the base/subbase layers in road reconstruction projects all in the confines of the existing road. Existing PCC is pulverized in-place, excavated into the MCR-300 for screening and crushing to proper gradation, stockpiled on the shoulder, then placed and compacted as new aggregate base/subbase material.
Similar to Rubblization (larger the particle size, higher the modulus, but increased chance of reflective cracking), utilizing a larger particle size for the base/subbase layer allows for a higher structural capacity of the material, at which point, compaction becomes a concern the larger the particle. In order to obtain the proper compaction percentages, a gradation chart with smaller particle ranges is necessary.
The MCR-300 is designed to match the smaller particle size produced by the Resonant Frequency Breaker. With, on average, only 10-15% of the material needing to be crushed, the MCR-300 screens the vast majority of the material to maintain a high rate of production. The smaller, more confined system allows for more maneuverability and reduced operating costs.