For long hauls or cool-weather paving, truck beds should be insulated, and tight-fitting tarps must cover the load to prevent surface crusting and temperature drops.
Must be uniform and sprayed within the specified range (typically 0.04 to 0.08 gallons per square yard, depending on the emulsion type and surface condition).
Compaction is the process of compressing the asphalt mix to reduce air voids and increase density. It is widely considered the single most important factor in determining the ultimate lifespan of an asphalt pavement. Target Air Voids and Density
If you are looking to download or reference the formal , it can be purchased directly through the official Asphalt Institute Bookstore . Educational institutions and transportation departments often provide authorized access to digital versions for engineering students and certified contractors. ms-22 construction of quality asphalt pavements pdf
MS-22 strongly advocates for the use of MTVs (shuttles) between the haul trucks and the paver. MTVs remix the asphalt immediately before placement, which eliminates two critical types of segregation: Reblends coarse and fine aggregates.
To guarantee that the construction matches the project specifications, rigorous testing must occur throughout the paving workflow.
The transverse joint should be rolled transversely (across the lane) with the roller supported mostly on the cold, cured pavement, gradually moving into the new mix. 8. Quality Control, Inspection, and Testing For long hauls or cool-weather paving, truck beds
Aggregates must be free of clay coating and resistant to degradation during handling and compaction. Asphalt Binder
Proper density reduces future maintenance needs. 5. Finding the MS-22 Manual
are you working on (e.g., parking lot, highway, city street)? It is widely considered the single most important
"We’re stuck," Elena admitted. "The mix design is fine, the temps are good, but we're getting segregation in the cores. I don't know if it's the paver speed or the screed settings."
Proper compaction prevents premature cracking and rutting.
2. Key Phases of Asphalt Construction (As Detailed in MS-22)