Material transfer system moves HMA from hopper to screed efficiently.(Featured Equipment)

Pavement Magazine, October, 2009

Material transfer system moves HMA from hopper to screed efficiently

By Allan Heydorn

An asphalt paver is really three systems in one. A tractor powers the paver, a material handling system moves hot mix from the hopper to the screed, and the screed "levels and profiles" the material. How this all gets done varies from one manufacturer to another, with the goal being to provide a smooth, homogenous mat out the back end of the paver.

The Asphalt Institute's Asphalt Handbook describes the screed as "the most important component of the asphalt paver" and with good reason. The screed provides an initial placement, finish, and compaction to the hot mix asphalt. But getting the hot mix asphalt properly and efficiently to the screed might be the...

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