There are many economic and environmental advantages to recycling and rehabilitating asphalt pavement. Ingevity’s Indulin® emulsifiers are used in emulsions for a variety of green paving processes such as cold in-place recycling, full-depth reclamation, and base stabilization.
Cold In-Place Recycling
Cold in-place recycling (CIR) is done without heat and using 100% of existing road materials. The CIR process utilizes a series of machinery to execute the entire process on-site in a single pass. The recycled asphalt pavement is milled, screened, and mixed with emulsion, followed by application onto the roadway. This means traditional trucking time, the natural resources used, and the overall project costs are significantly less, while the longevity and durability of the finished road is increased.
Full-depth reclamation (FDR) is a rehabilitation method that pulverizes the full thickness of the asphalt pavement and then blends a stabilization additive into the pulverized, reclaimed material. The FDR process recycles the existing pavement structure in a way that provides a permanent, measurable and long-term structural improvement to the base layer, and eliminates the need for excavations to the subgrade or the replacement of materials.
The stabilization of a road’s base uses aggregate and additives to produce an enhanced base layer that is stronger, more stable and durable, and that will ultimately support and enhance the performance of the overall pavement structure. Base stabilization can improve a road’s ability to resist rutting and shoving due to traffic loading; resist water when exposed to moisture and temperature changes; extent pavement life; minimize the overlay thickness; and strengthen the base layer.