GSSI and Hamm Introduce RealTime Density Scan for Asphalt
In a ground-breaking partnership set to reshape the future of road construction, GSSI and Hamm AG have unveiled a game-changing technology: the RealTime Density Scan. This high-speed, highly accurate sensor is engineered for integration into Hamm’s Smart Compact system for tandem rollers, delivering real-time compaction data that’s set to revolutionise quality control (QC) and quality assurance (QA) in asphalt paving.
After years of collaboration, the two industry giants, GSSI, a pioneer in ground penetrating radar (GPR), and Hamm AG, the leading name in roller manufacturing, have married their technologies to address one of the asphalt industry’s most stubborn challenges: reliably achieving optimal density in real-time, under real-world paving conditions.
Precision Under Pressure
As anyone in the field knows, paving is a high-stakes game. Conditions are brutal—heat, moisture, vibration, and dust can all wreak havoc on delicate instruments. Yet the RealTime Density Scan is built to thrive in this chaos, providing accurate readings while the roller is in motion. Operators finally have a tool that gives them live feedback on compaction levels, helping ensure uniform density across the entire job.
GSSI President Chris Green didn’t mince words: “Given the trajectory of Density Profiling Systems in the industry, the natural next step in the PaveScan ecosystem was to integrate this technology into asphalt rollers. This agreement with Hamm combines the long-standing strengths of each company to provide customers with a truly innovative solution on a large scale. We couldn’t be more excited about working with Hamm and the future of DPS.”
Why Density Matters
Compaction isn’t just a box to tick; it’s a critical factor in determining road longevity. As Dr. David Cist, GSSI’s CTO, explained: “DOTs pay bonuses for good density because their research shows that each 1% change in compaction can extend or shorten road life by 10% or more. Since water is the enemy of all roads, getting good densities over the entire job is key to longer road life, since it seals out salt and water.”
The issue is, traditional methods of checking compaction—using gauges or cutting cores—are slow, sparse, and often too late to influence outcomes. Contractors have historically had little to go on in the moment, relying on guesswork and post-process verification that can miss hidden weak spots.
Dr. Cist added: “Knowing surface temperature, roller pass count, and stiffness are all great, but they can never be combined to give the density values contractors need at the accuracy DOTs pay for.” This is where real-time GPR changes everything.
From QA to Real-Time Process Control
GSSI’s PaveScan technology has long been used for post-job quality assurance, but its evolution into a real-time process control system has been a game-changer. The RealTime Density Scan enables contractors to adjust on the fly—before issues become costly mistakes. It’s not just better for budgets; it’s better for the roads and the communities that depend on them.
Field tests have consistently proven its value. Across a range of climates and job types, the new GPR system has demonstrated an uncanny ability to deliver actionable insights during every phase of the asphalt paving process:
- At the Plant: Ensures consistent material quality before it ever hits the road.
- On the Mat: Guides roller operators in real-time to achieve target densities.
- Post-Compaction: Validates the job instantly, reducing the need for coring.
It’s no exaggeration to say that this is a win-win for contractors, engineers, and transport authorities alike.
The Power of Integration
The secret sauce here isn’t just in the sensor—it’s in the seamless integration. Hamm’s Smart Compact system already leads the market in digital compaction control. Adding GSSI’s RealTime Density Scan enhances its capabilities, turning every roller into a mobile lab capable of precision paving.
This isn’t GSSI’s first foray into industrial integration. From assessing the density of whiskey barrels to monitoring the quality of refractory bricks, the company has built a reputation for developing world-class GPR sensors and then finding bold new ways to apply them.
Chris Green put it best: “Our job is to create the best GPR sensors in the world and then work with partners to create innovative solutions that have the potential to revolutionize industries. Every problem is unique, but the goal is always the same, make something that customers quickly decide that they can’t live without.”
A Legacy of Innovation
Founded over half a century ago, Geophysical Survey Systems Inc. (GSSI) has been at the forefront of GPR development. From archaeological digs in the Middle East to highway inspections in Europe and the Americas, their systems are deployed on every continent. Their reputation is one of relentless innovation and unmatched quality.
With the RealTime Density Scan, GSSI is doubling down on that legacy. But this time, they’re not going it alone. Partnering with Hamm AG ensures that the solution will see widespread adoption, thanks to Hamm’s global footprint and reputation for engineering excellence.
Looking Ahead
As asphalt paving evolves to meet modern demands, tools like the RealTime Density Scan are becoming indispensable. Governments are demanding longer-lasting roads. Contractors are under pressure to reduce costs and emissions. And communities want less disruption and more reliable infrastructure.
Real-time, high-accuracy data isn’t just nice to have anymore—it’s a necessity.
This collaboration between GSSI and Hamm is setting the standard for what’s possible when two industry leaders bring their A-game. It’s not just about technology; it’s about delivering better roads, smarter infrastructure, and a more sustainable future.
Driving a Better Future
This next-gen technology brings a breath of fresh air to an industry often stuck in its ways. By moving from reactive QA to proactive process control, it redefines the way asphalt jobs are executed, measured, and optimised.
In an era where infrastructure resilience is front and centre, innovations like the RealTime Density Scan aren’t just helpful—they’re essential.
