Intelligent Compaction

Maine DOT uses GSSI’s PaveScan RDM to measure whether there is uniform density throughout a pavement layer.

If misalignment of the screed sections leaves a line in the mat, the roller operator is called on to smooth it out. Mat imperfections, divots, cool spots, anything that isn’t perfect gets left to the breakdown, intermediate and finish rollers to take care of. That means the roller operator’s equipment must be in perfect working […]

When it comes to airport paving projects, accuracy in grade and slope is the great equalizer. Federal Aviation Administration (FAA) specifications dictate the tolerances to which runways and taxiways must conform and those rules govern projects both large and small. When Crestline Construction won the bid to handle the rehab and replacement of Taxiway A […]

Granite Construction prepares for the new norm, hitting 100 percent bonus along the way Currently, 23 states have written intelligent compaction (IC) specifications for asphalt paving jobs, and that number is only expected to grow. Among those states with IC specs is California. As with many of the states, however, although they’ve invested time and […]

While they tackled placing large Tier 4 engines, after-treatment systems and diesel exhaust fluid tanks in machines for the January 2017 deadline, asphalt industry OEMs (original equipment manufacturers) saw problems with visibility creeping into design. They worked to solve those challenges to create an environment that is both safe and smart from the operator’s point of […]

As stated by R. Bruce Noel at the 1977 annual meeting of the Association of Asphalt Paving Technologists (AAPT), “The single most important construction control that will provide for long-term serviceability is compaction.” When compaction is enhanced, in-place density can be optimized, thereby improving durability and extending pavement service life. A review of several past […]

As mentioned earlier in this issue, it feels as though World of Asphalt 2016 (WOA) took place ages ago. Yet we have continued uses, of course, for the innovations that were launched at that trade show and in the months following the show. The big topic the past few years has been the slow march […]