Apr 25, 2019
Hawaii Asphalt Pavement Association Executive Director Jon Young explains components of a job mix formula for dense-graded mixes–a must read introduction to JMFs.
May 25, 2018
Gallagher Asphalt eliminates long joints on Illinois S.R. 50 The problem of deteriorating longitudinal cold joints between parallel one-lane lifts of asphalt has long perplexed pavement owners. These joints between paved lanes can degrade and permit water to enter the pavement, which leads to debonding, delamination, long joint patches, or potholes. There have been many […]
May 25, 2018
Pace Construction, St. Louis, Missouri, applies innovative practices through the value engineering process for a 55,000-ton mill-and-fill project spanning a stretch of 22 miles of Highway 63 just south of Rolla for MoDOT.
Feb 26, 2018
The Alaska Department of Transportation & Public Facilities is on the front line when it comes to promoting new technologies that give them continuous, full coverage asphalt pavement density testing for road paving projects. Continuous testing uses multiple inputs to look for failure zones and has a high probability of detecting defects before they lead […]
Jan 25, 2018
We all know that in our industry, what works for one climate may not work for another, and low gyration mix designs are no exception. “We have a similar mix design at the National Center for Asphalt Technology (NCAT) test track in Alabama,” said Robert Semones, branch manager of the Kentucky Department of Transportation (KYTC) […]
Oct 24, 2017
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 […]
Sep 22, 2017
In September 2015, the Federal Highway Administration (FHWA) Expert Task Group on Mixtures and Construction formed a Balanced Mix Design Task Force. This group defined balanced mix design (BMD) as “asphalt mix design using performance tests on appropriately conditioned specimens that address multiple modes of distress taking into consideration mix aging, traffic, climate and location […]