Caterpillar’s new B-Series tandem vibratory asphalt roller models include a range of advancements in intelligent compaction technology to improve operator control and deliver higher quality compaction, the manufacturer reported.
These models — the CB64B, CB66B, and CB68B — feature technological improvements made possible through Cat Compaction Control, Caterpillar’s intelligent compaction suite.
Providing 4 Layers of Compaction Control
The suite’s first offering consists of dual air-purged, infrared temperature sensors that are integrated into the front and rear of the machine, said Bryan Downing, global sales support consultant for Caterpillar. The output is viewable on the standard machine LCD display.
“The lead sensor relative to the direction of travel is active, measuring the surface temperature of the asphalt layer before the roller passes over the surface and alters the temperature,” Downing explained. “This provides the operator with real-time temperature measurement so he or she can ensure compaction is taking place within the optimal temperature range.”
The suite’s second offering features satellite-mapping instruments that document machine location or tie temperature sensor measurements with the location where they’re taken. Combined with the temperature sensors, the satellite mapping can document and ensure consistent pass count and full coverage of the asphalt layer within the optimal temperature.
“This is perfect for documenting the compaction uniformity and consistency, which is necessary for delivering quality compaction,” Downing said.
The suite’s third item is an accelerometer that’s mounted to the front drum of the asphalt compactor. This new addition facilitates an output indicating material stiffness, including the asphalt layer and the sub-layers below.
The Cat Compaction Control suite’s final offering — automatic adjustable compaction — delivers independent control of amplitude for both the front and rear drums. This technology also measures indications of stiffness and applies the maximum amount of energy the mat can accept.
“The highest amplitude potential is created in the initial passes,” Downing explained. “As the mat density increases, the system automatically decreases the amplitude to only apply as much energy as the mat can take. This will generate the quickest compaction growth.”
The automatic adjustable compaction system also prevents over-compaction and aggregate fracture, Downing said.
A Tier 4 Final-Compliant Engine
The 142-hp Cat C4.4 ACERT engine is Tier 4 final-compliant and comes standard with Eco mode and automatic speed control.
These models also feature a newly designed center-articulating hitch with six degrees of oscillation to ensure mat contact and a smoother ride over uneven surfaces. An offset hitch option extends coverage up to 6 inches and simplifies control next to obstacles.
The CB64B is equipped with 79-inch drums, while the CB66B and CB68B use 84-inch drums.
The models offer a range of vibratory options, including dual amplitude, dual frequency, Versa Vibe, and five amplitude systems. The high-capacity water spray system on these models includes dual spray bars, dual pumps, triple filtration, adjustable intermittent operation, and an optional freeze protection kit.