Method for laying down a pavement consisting of paving material with a road paver screed in which a compaction unit pre-compacts the paving material at cyclical work cycles with a selectable stroke and at a selectable frequency while the pavement is laid down at a selectable paving speed and at least the stroke is automatically adjustable in response to paving parameters.

A vibratory head for a concrete vibrator includes elongate structures suitable for use to consolidate uncured concrete in a horizontal or flat application.

A portable backpack-borne power unit used for concrete vibration and consolidation, that is switchable between left-handed and right-handed applications. The power unit can transmit motor-generated power to a variety of tools with various power cables known in the art. For concrete vibration, power is transmitted to a vibrator that is immersed within green concrete. The instant design enables the power connection at the power unit to be secured on either side of the backpack, effectively facilitating either left-handed or right-handed operation.

A system, method, and apparatus for leveling concrete and similar materials. The automated, remotely controllable screed for leveling concrete can be used on any kind of sub-grade, it is lightweight and can be moved quickly to any location or floor level. It is highly accurate, and less labor intensive compared with the lightweight devices. It is all electrical mechanical. It is low noise. It is remotely controlled.

An apparatus is provided for determining the position of a vibration unit for concrete compaction which can be guided by an operator. The apparatus includes a surface position determination device having a receiving device with the surface position determination device being designed to determine the position of the receiving device in the plane. The apparatus additionally includes an orientation determination device for determining an orientation (A) of a working direction of the operator. The apparatus also includes a correction device for correcting the position of the receiving device with an offset (O) in the direction of the orientation (A) of the working direction and, thus. for determining the position (P2) of the vibration unit in the plane.

A monitoring system is provided for a slipform paver for monitoring the compaction of concrete placed in a slipform with at least one concrete compaction device, which has a hydraulic motor for driving a vibration-generating imbalance. In addition, a method is provided for monitoring the compaction of concrete placed in a slipform of a slipform paver with at least one concrete compaction device, which has a hydraulic motor for driving a vibration-generating imbalance. The monitoring system and the method are characterized in that the pressure in the hydraulic fluid system is measured by at least one pressure sensor arranged in the hydraulic fluid system, which pressure sensor generates a pressure signal correlating with the pressure in the hydraulic fluid, and the compaction of the concrete placed in the slipform is concluded on the basis of an analysis of the pressure signal.