Pavement Preservation is "a program employing a network level, long term strategy that enhances pavement performance by using an integrated, cost effective set of practices that extend pavement life, improve safety, and meet motorist expectations."
Source: FHWA Pavement Preservation Expert Task Group
The Gorman Group provides a vast array of pavement preservation services including: Micro Surfacing, Paver Placed Surface Treatment (PPST), FiberMat®, Chip Seal, Crack Seal, and Fog Seal.
Micro Surfacing & Slurry Seal
Micro Surfacing and Slurry Seal are thin pavement preservation treatments consisting of a mixture of: asphalt and emulsion, aggregate, mineral filler and water, that dries to a hard black finish.
Paver Placed Surface Treatment (PPST)
Paver Placed Surface Treatment (PPST) seals existing road surfaces and provides a new skid resistant wearing course. The application involves a self-priming paver, which applies an emulsion bond coat directly in front of the paving screed where an ultra-thin overlay of hot mix asphalt is placed.
FiberMat® is the ideal stress absorbing membrane interlayer. The FiberMat process utilizes a specially developed patented machine which chops fiberglass strands in-place and sandwiches them between two layers of polymer modified asphalt emulsion prior to the application of a light dressing of 1/4”, 3/8” or 1/2” aggregate, which is then rolled into the surface. This mixture acts as a highly resilient waterproof membrane that effectively bridges alligator pavements and also delays reflective cracking.
A Chip Seal (surface treatment) is a thin preventive maintenance overlay consisting of a heavy spray application of asphalt emulsion followed by a single layer of clean, uniform sized crushed stone. The surface treatment will seal the pavement from intrusion of water and reduce oxidation and weathering of the surface. Pavement skid resistance is also improved with a Chip Seal surface treatment.
Crack and Joint Sealing is a preventative maintenance treatment that increases pavement life at a minimal cost by keeping water out of the pavement structure.