Mix Design

MoDOT and NB West Contracting solve weather-related safety issues on a problem section of pavement using Cargill’s WinterPave additive.

FORTA’s new Surface-EXT fiber additive can extend the life of slurry seals and micro surfacing treatments by three years.

What you need to know about new material standards, design standards and construction guides from AASHTO’s Emulsion Task Force. What impact will the specifications have on pavement preservation treatments, including chip seal, micro surfacing and fog seal, as well as tack coats and cold recycled mixtures?

WisDOT has implemented an approach known as “regressed air voids” as they work to improve pavement durability and cracking resistance by increasing the amount of binder in their asphalt mixtures.

A well designed and implemented process control program should improve quality, prevent failures, reduce cost, and add value to HMA plant customers.

Rubber modified asphalts (RMA) have been around for decades to offer excellent performance with environmental and cost benefits. Despite real-world experience, RMA still constitutes less than 20 percent of modified asphalts. We see two primary drivers for this: limited application field and processability. Here, Tom Rosenmayer shares his vision of the future of rubber modified asphalts.

Precise specimen preparation is a key step in performing reliable performance testing, regardless of the material tested or the sophistication of your testing systems. Let’s explore some basic steps for achieving the appropriate range of specimen preparation.