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9,520 Reasons to Try New Compaction Technology

George Nathanailidis and his crew faced an enormous soil compaction challenge on a dam project in Greece, where they were responsible for placing massive volumes of material and achieving uniform compaction in sandy clay. Cat® Machine Drive Power (MDP) helped turn what could have been a nightmare project into a dream job.

“MDP saved us considerable time and certainly money,” says Nathanailidis, president and chief executive officer of TENA SA, one of the largest construction companies in northern Greece. “I would recommend others use it because of fast measurement compaction, accuracy, reliability and increased productivity.”

Fewer Passes, More Speed, Greater Accuracy

Nathanailidis has the numbers to back up his recommendation. In compacting approximately 280 layers, he estimates MDP helped eliminate a stunning 9,520 passes, or 34 passes per layer. It also more than doubled productivity on the remaining passes by enabling the Cat CS66B soil compactor to increase its working speed.

Dam authorities initially set requirements of 12 passes at a rolling speed of 2 km/h (1.2 mph) to ensure proper compaction. After comparing MDP’s findings to other onsite measurements, they were so impressed with the consistency that they allowed TENA SA to make significant adjustments—reducing the number of passes to eight and increasing speed to 4.5 km/h (2.8 mph).

That’s not all. Nathanailidis says MDP proved reliable in clay soils, where an accelerometer-based system would suffer from high variability and provide questionable readings. He also reports improved quality control because his crew could spot problems early and take immediate corrective action.

Cat® MDP Defined

A machine-integrated soil compaction measurement technology, MDP evaluates rolling resistance—determining whether compaction is adequate to structurally support whatever is planned for a site. Its biggest benefit? Confidence.

While conventional methods only provide a snapshot of structural integrity—typically testing just 1 percent of a site—MDP acts as a proof roller while it works. That enables fast discovery of inconsistencies across an entire site. Plus, it works in any type of soil and on smooth, padfoot, vibrating or static compactors.

Learn more about the benefits of MDP.