The Asphalt Institute revises MS-22 approximately every 5–7 years. Always check your PDF’s copyright date. The most widely used editions are the 3rd Edition (mid-2000s) and the 4th Edition (mid-2010s). A 5th Edition may be in development at the time of your search.
Recent editions of MS-22 add sections on WMA, which is produced at lower temperatures (50–100°F lower than HMA). The manual explains how lower temperatures affect compaction timing, rolling patterns, and density achievement. ms-22 construction of quality asphalt pavements pdf
Introduction: Why MS-22 is the "Bible" of Asphalt Construction In the world of civil engineering and road construction, few documents carry as much weight as MS-22: Construction of Quality Asphalt Pavements . Published by the Asphalt Institute, this manual has served for decades as the definitive field reference for inspectors, project engineers, contractor superintendents, and quality control technicians. A 5th Edition may be in development at
Partially. It includes a chapter on construction of overlays (including milling and bonding), but it is not a maintenance manual. For that, see MS-16 ( Asphalt in Pavement Maintenance ). Introduction: Why MS-22 is the "Bible" of Asphalt
