Asphalt paver with compaction compensating system

Details Asphalt paver with compaction compensating system Asphalt paver with compaction compensating system

E - Fixed Constructions

01

C

E01C 19/22 (2006.01) E01C 19/00 (2006.01)

Patent

CA 2181970

An improved method and an improved asphalt payer for a compaction compensating system is provided for compensating differential compaction in as asphalt paving mat. The asphalt payer has a compaction compensating system that includes a nominal reference, such as an elongate averaging ski, for determining the general profile of the underlying terrain on which a mat of asphalt material is being placed by the payer. The improved system also includes a compensating ski for determining localized irregularities of the subgrade and a control system for responsively altering the thickness of the mat being placed by the paver to compensate for differential compaction of the asphalt material such that a generally planar asphalt paving surface is obtained after compaction thereof. Modified embodiments of the improved compaction compensating system include use of a stringline for the reference and/or one or two non-contacting sensors for communicating the general profile and localized irregularity determinations of the subgrade to the control system.

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