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In Infrastructure , Research and Studies , Safety

Nuclear Density Gauge Testing on VRAM Joints

This article explores why nuclear density gauge testing may not be accurate or necessary when J-Band® Void Reducing Asphalt Membrane (VRAM) is applied beneath longitudinal joints.  Why Measure Density?  Density is measured during asphalt pavement construction because it is a strong indicator of pavement performance, even though other measurements also...
In Research and Studies

Understanding Longitudinal Joint Performance with Permeability Testing

Pavement performance is closely tied to density, which measures compaction. Achieving high density at the longitudinal joint has always been challenging. Another way to evaluate density is through permeability: the denser the pavement, the less water can infiltrate. Water intrusion is a leading cause of early pavement failure, especially at...
In Case Studies , Project Reviews

How Springfield, Illinois’s SR-29 Has Stood the Test of Time

How often are you repairing major roads? After years of wear and tear and damage from the elements, longitudinal joints are typically the first part of a pavement to fail. Water seeps into air voids at the most permeable part of the road and leads to premature maintenance and repair....
In Case Studies , Great Asphalt Moments , Research and Studies

Accelerated VRAM Pavement Testing at the NCAT Test Track

The NCAT Test Track  The National Center for Asphalt Technology (NCAT) Test Track at Auburn University is a proving ground for asphalt pavements. Made up of a 1.7-mile oval, the Test Track is divided into 200-foot test sections to create a real-world laboratory for innovative paving techniques and products. In...
In Infrastructure , Research and Studies , Safety , Specialty Products

A Safer Way: Eliminating Centerline Density Testing

Road construction can be dangerous. Vehicles zoom past field workers at hazardous speeds. One of the riskiest places to be is near the centerline of a busy road. Quality control technicians have lost their lives when performing density tests at the joint. Unfortunately, density testing of the center longitudinal joint...
In Industry News , Research and Studies

How to Test the Permeability of Your Roadway

Have you ever wondered why your longitudinal joint is cracking and deteriorating over time? It’s probably because the pavement joint is highly permeable, which allows elements such as water and air to seep into the pavement and break it down. Pavement joints are traditionally hard areas to obtain density, leading...