Seismic technology enables the drum and ground to work together as one.
A SEISMIC SHAKE-UP FOR
COMPACTION
DYNAPAC HAS CREATED A NEW COMPACTION TECHNOLOGY TO INCREASE EFFICIENCY, OPERATOR COMFORT AND FUEL EFFICIENCY. RELEASED INTERNATIONALLY IN 2019, THE TECHNOLOGY HAS NOW HIT AUSTRALIAN SHORES.
T
he idea behind the creation of Dynapac’s newest optimisation technology came at an unexpected moment. Andreas Persson, Dynapac Calculation Engineer, was watching his daughter on the trampoline when inspiration hit. Mr. Persson noticed that his daughter jumped much higher when she landed on the upswing of the trampoline. He realised she gained a maximum height, with the least amount of effort, when she jumped in phase, taking advantage of the
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ROADS MARCH 2020
natural frequency in the trampoline. It was this principal that Mr. Persson and Dynapac adapted to create Seismic technology for compaction rollers, which is now patent pending. Launched at one of the world’s leading construction and machinery fairs in 2019, Dynapac’s Seismic technology has now landed in Australia. Seismic reads the natural frequency of the soil and determines the optimum frequency for that material to be compacted. Traditionally for compaction, the
properties of the drum and the ground are viewed as two separate elements that interact to create the compacted surface. However, Seismic technology enables the drum and ground to work together as one system for improved compaction practices. For Seismic compaction to be achieved, two specific conditions must be met. The first is that the machine must read the stiffness properties of the ground in order to interact with it. When these values can be determined, the optimal frequency can be calculated.
