Erie Blacktop Hamm HD120V
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Erie Blacktop put their new Hamm HD 120 V oscillatory roller to work on a 1-1/4” non compacted 9.5mm Super Pave surface course job. This mix was tough to compact utilizing traditional vibratory high frequency machines in the breakdown mode. It was decided by McLean Company representatives with Chris Schaeffer of Erie Blacktop permission to try using the Oscillatory roller in breakdown mode using just the Oscillatory drum only. The density then jumped up to an acceptable number after a 4000 vpm machine would not get the density numbers required in the breakdown mode.
Shelly and Sands, Inc: RT 23 Job
By · CommentsShelly and Sands uses the oscillatory technology from Hamm Compaction to help themselves out of a tough application on US RT 23 in Chillicothe, Ohio. The job requirements were two asphalt 12mm lifts over joint repaired concrete that carried smoothness and density requirements. This is a problem for all contractors in Ohio (see Flexible Pavements article link) http://www.flexiblepavements.org/images/techbullcrackseal.pdf
Traditional vibratory rollers were first used to compact the material. Joint repair bumps would occur so it was determined by Ed Morrison of Shelly and Sands QC department to try using the new Hamm oscillatory roller technology along with old technology of the pneumatic tired roller. Both worked very well in getting rid of the bump reoccurrence.
Legg and Davis Construction: LeeBoy 8515 Paver
By · CommentsLegg and Davis Construction Company has been a family owned contracting business Columbus, Ohio since 1907. They are one of the few businesses that specialize in both asphalt and concrete work as a specialty. In 2006 they purchased a new Lee Boy model 8515 paver manufactured by Lee boy from The McLean Company. It is the latest in the state of the art paving machines built and designed by Lee Boy incorporating sonar based grade control system by Topcon and sonar material handling system. This new paver has an innovative electrically heated screed capable of going out to 15’ wide with heat and vibration and a high speed rubber track not offered by other manufacturers presently. The function controls for the machine is finger tip controlled which allows for ease of movement from right to left side of the machine for easy operation. The nice advantage of this machine is it can be a 2 or 3 man machine operation by either being a Low deck or High deck machine by simply raising the operators control panel. Literally 1 man can run this machine.
