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The J-Band Blog

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.
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...
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October 31, 2025 by Olivia Kortepeter
In Case Studies , Great Asphalt Moments , Project Reviews

LaDOTD Introduces an Innovative Material to Baton Rouge, Louisiana

LaDOTD new VRAM state
In October of 2025, the Louisiana Department of Transportation and Development (LaDOTD) launched its first J-Band® Void Reducing Asphalt Membrane (VRAM) project, marking Louisiana as the 29th state to use this innovative technology to extend the life of longitudinal asphalt construction joints. Why is VRAM Adoption Spreading So Quickly?  Since...
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October 28, 2025 by Olivia Kortepeter
In Research and Studies

Understanding Longitudinal Joint Performance with Permeability Testing

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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...
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September 26, 2025 by Olivia Kortepeter
In Case Studies , Infrastructure

State Routes That Are ‘Built Different’ 

State Routes That Are ‘Built Different’ Reinforcing Roads Across Indiana, Illinois, and Ohio with VRAM
Reinforcing Roads Across Indiana, Illinois, and Ohio with VRAM  Void Reducing Asphalt Membrane (VRAM)—known by the brand name, J-Band®—is transforming the way state agencies build and maintain roads. This innovative solution strengthens the most vulnerable part of asphalt pavements: the longitudinal joint. Applied before the hot mix lift, under the...
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September 25, 2025 by Olivia Kortepeter
In Case Studies , Our Applicators

Ohio Turnpike Trusts VRAM to Reinforce Its Data-Driven Superhighway

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Before the Ohio Turnpike was constructed in the 1950s, travel across Ohio was a patchwork of canals, railroads, and roads—each varying in quality and reliability. With the rise of automobiles, state leaders envisioned a superhighway stretching across the northern edge of the state. The result was the Ohio Turnpike—241 miles...
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August 19, 2025 by Olivia Kortepeter
In Meet The Team , Our Applicators , Sustainability

Applicator Spotlight: Specialized Construction, Inc. (SCI) Excels at Preventative Treatments

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Across the country, more and more agencies are turning to Void Reducing Asphalt Membrane (VRAM) to strengthen their repaving projects from the ground up. VRAM is a specialty asphalt product designed to reinforce longitudinal joints and rumble strips during construction, significantly delaying the need for costly repairs. To date, 28+...
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August 12, 2025 by Olivia Kortepeter