Skip to main content

Advanced soil compaction

From Caterpillar comes a new compaction system that is said to boost working efficiency. The innovative machine drive power (MDP) package is said to be an integrated soil compaction measurement technology that has been tested by contractors at several jobsites around the world. Now coming to market, the MDP package is one component of an intelligent compaction (IC) package from the firm. The IC technology includes integrated compaction measurement (with an accelerometer, or Cat’s MDP), a system that pro
March 11, 2014 Read time: 3 mins
Caterpillar’s MDP system is said to offer performance gains for soil compaction
RSSFrom 4018 Caterpillar Paving comes a new compaction system that is said to boost working efficiency. The innovative machine drive power (MDP) package is said to be an integrated soil compaction measurement technology that has been tested by contractors at several jobsites around the world.

Now coming to market, the MDP package is one component of an intelligent compaction (IC) package from the firm. The IC technology includes integrated compaction measurement (with an accelerometer, or CAT’s MDP), a system that provides jobsite position location with GPS and data storage capabilities. The MDP system evaluates the rolling resistance at the drum, which indicates the degree of soil stiffness. The looser the material is, the harder it is for the drum to roll over the pile of material in front of it, providing a measure for soil stiffness and load-bearing strength, and whether compaction is sufficient.

The MDP system is a proprietary technology that has been developed by Caterpillar. The firm says that the system can be used on all soil types, allowing a compactor to act as a proof roller, even when not vibrating. It increases efficiency by reducing the need for multiple passes while also ensuring that compaction is uniform and to the required design specification. This uniformity prevents weak areas from failing. The system is also said to improve productivity as well as uniformity, reducing the number of passes needed from eight, to two or three in some tests.

The testing has been carried out in the US, as well as Germany, France, Sweden and Netherlands and the trials also show that density targets can be achieved in fewer passes. Reducing passes lowers fuel consumption, machine wear and labour costs. In the past contractors have had to rely on method specs, such as requiring eight passes, to ensure the compacted area can bear necessary load. But IC and MDP technology means that the number of passes can be lowered. This boosts quality as unnecessary passes can harm the surface, as well as lowering the time required to carry out a job. According to Caterpillar, IC and MDP measurements are now being considered in other corners, with state and federal transportation officials taking a closer look at this technology.

For more information on companies in this article

Related Content

  • Tools for breaking
    February 9, 2012
    Mike Woof reports on equipment developments in the demolition sector. The hydraulic hammer is a tough tool used in a wide array of demolition jobs. Highly versatile, the breaker has evolved from a simple design based on rockdrilling equipment into a sophisticated and reliable piece of machinery. German firm Krupp and French company Montabert were pioneers of the hydraulic breaker, being followed into the market by a growing array of other manufacturers. Early breakers had the unfortunate habit of tearing th
  • Case unveils new fuel-efficient Tier 4 Interim DV209 and DV210 high frequency asphalt compactors at Conexpo 2014
    January 6, 2017
    Case Construction Equipment has used Conexpo 2014 to unveil its new Tier 4 Interim DV209 and DV210 high frequency asphalt compactors, both designed to improve fuel efficiency by up to 10% compared with previous models. The two new compactors add to the CNH brand’s range of high frequency double-drum models, and are said to give road builders more control and versatility to match the thickness and required density of each layer.
  • Case unveils new fuel-efficient Tier 4 Interim DV209 and DV210 high frequency asphalt compactors at Conexpo 2014
    March 5, 2014
    Case Construction Equipment has used Conexpo 2014 to unveil its new Tier 4 Interim DV209 and DV210 high frequency asphalt compactors, both designed to improve fuel efficiency by up to 10% compared with previous models. The two new compactors add to the CNH brand’s range of high frequency double-drum models, and are said to give road builders more control and versatility to match the thickness and required density of each layer.
  • Milling a runway surface
    May 26, 2023
    Milling machines from Wirtgen were used as part of the successful project to resurface a runway for Leipzig/Halle Airport in Germany