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The J-Band Blog

In Research and Studies

Understanding Joint Behavior With & Without VRAM

Understanding Joint Behavior With & Without VRAM
As pavement technologies evolve, so do the best practices for road performance evaluation and maintenance. One such innovation, J-Band® void-reducing asphalt membrane (VRAM), protects vulnerable longitudinal joints from the damaging effects of air voids and water intrusion. This leading-edge material is being used by state and local agencies to extend...
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November 21, 2025 by Olivia Kortepeter
In Case Studies , Infrastructure , Project Reviews

ODOT’s Smart Investment for Long-Lasting Roadways

SR-53 is a four-lane, divided North South highway connecting Fremont to the Ohio Turnpike. For high-volume routes like this, VRAM-reinforced joints are smart insurance to reduce and delay future maintenance.
Ohio’s Department of Transportation (ODOT) is incorporating an innovative asphalt technology into many of its largest road construction projects this year: Void Reducing Asphalt Membrane (VRAM), also known as J-Band®. This proven material is designed to protect the most vulnerable part of any asphalt pavement—the longitudinal joint—ensuring longer-lasting, safer roads...
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November 11, 2025 by Olivia Kortepeter
In Case Studies , Specialty Products

Strengthening Asphalt-Concrete Curbs with VRAM 

agencies are turning to Void Reducing Asphalt Membrane (VRAM) to reinforce these vulnerable concrete asphalt interfaces
Getting a good bond between hot mix asphalt (HMA) and concrete curbs is challenging but critical for long-lasting pavement. To combat this issue, many agencies are turning to Void Reducing Asphalt Membrane (VRAM) to reinforce these vulnerable edges.  J-Band® VRAM does more than just seal the asphalt to the concrete...
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November 6, 2025 by Olivia Kortepeter
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

J-Band
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