According to Wikipedia, full-depth recycling (FDR), also known as full-depth reclamation, is a pavement rehabilitation process that rebuilds deteriorated asphalt roads by recycling the existing pavement and a portion of the underlying base material in place. The roadway is pulverized, mixed with stabilizing agents such as cement, lime, fly ash, or asphalt emulsion, then compacted to create a strong new foundation for a fresh pavement surface. This method helps conserve materials, reduce construction waste, lower hauling costs, and improve long term pavement performance.