Pavement Structure HMA pavements are flexible pavements. Flexible pavements are so named because the total pavement structure deflects, or flexes, under loading. A flexible pavement structure is typically composed of several layers of material. Each layer receives...
Pavement Response How a pavement responds to applied stresses is the combined result of loading, environment, subgrade and pavement material characteristics. This section presents the typical stresses and deformations experienced by an HMA pavement structure under...
Structural Design Methods The goal of structural design is to determine the number, material composition and thickness of the different layers within a pavement structure required to accommodate a given loading regime. This includes the surface course as well as any...
Perpetual Pavements Advancements in milling, recycling and HMA technology over the last few decades have created HMA pavements that perform better, longer and with lower life-cycle costs than was previously possible. Today’s HMA pavements can be designed to last in...
Maintenance Pavement maintenance describes all the methods and techniques used to prolong pavement life by slowing its deterioration rate. The performance of a pavement is directly tied to the timing, type and quality of the maintenance it receives. Crack Seals Crack...
Rehabilitation Rehabilitation can be defined as (ITS 2000):Measures to improve, strengthen or salvage existing deficient pavements to continue service with only routine maintenance. Deficient pavements exhibit distress in excess of what can be handled through routine...
