Category: Case Studies

The J-Band Blog

In Case Studies , Infrastructure , Project Reviews , Rumble Strips , Safety

Montana Highway 200 Trench Mill and Fill: Slot Paving Made Durable with a VRAM

Trench mill and fill, now with VRAM sprayed before the slot paving
The Problem  Miles of existing roads are plagued with longitudinal joint distress, especially if they have milled rumble strips. Centerline joint distress often needs re-paving far sooner than the rest of the pavement. There is a need for a better longitudinal joint repair system.  The Current Practice for Repairing Centerline...
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June 26, 2025 by Olivia Kortepeter
In Case Studies , Project Reviews

ODOT’s US-6 Displays the Power of VRAM to Seal Longitudinal Joints

Void reducing asphalt membrane centerline joint of a road
Crack sealing is an important practice for agencies to prevent further damage to already emerging cracks in a pavement structure. The longitudinal construction joint is commonly crack-sealed, because it is one of the most vulnerable spots in a road.   Despite crack sealing, the longitudinal joint is often the first location...
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May 5, 2025 by Olivia Kortepeter
In Case Studies , Project Reviews

Northern Ohio State Route 168 Exceeds Expectations with VRAM

Large gap above the centerline joint
The most vulnerable part of any new asphalt pavement is typically the longitudinal construction joint. Achieving adequate density at the intersection of pavement lanes is notoriously more difficult than elsewhere on the mat. Lower density translates to more air voids, allowing water and air intrusion to prematurely degrade the pavement.  ...
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April 3, 2025 by Olivia Kortepeter
In Case Studies , RPE , Specialty Products

A Solution to Joint Density Failure: J-Band + Rapid Penetrating Emulsion (RPE)

J-Band
Achieving adequate density at the longitudinal joint of a road is challenging. Well-constructed joints typically have 1-2% lower density than the mat, while poorly constructed joints can be 5-10% lower. When the density at the joint is considerably less than that of the mat, the joint area has more air...
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March 4, 2025 by Olivia Kortepeter
In Case Studies , Project Reviews

I-72 Project Review: Staying Strong After 8 Years

view looking down an interstate highway
Every road manager knows that longitudinal joints are typically the first part of the pavement to fail, but why does this happen and how can it be stopped?   Longitudinal joints are the weakest point of the pavement because they have a higher concentration of air voids than the rest of...
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February 25, 2025 by Olivia Kortepeter
In Case Studies , Project Reviews

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

IL-29 Close Up
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....
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February 13, 2025 by Olivia Kortepeter