In the method for operating a movable compaction device (10) during material compaction work the moisture content of the material to be compacted is monitored. The method comprises the steps of defining a compaction performance index for the material (100) to be compacted, said compaction performance index being an electromagnetic character correlating with the volumetric moisture content of the material, determining the compaction performance index value in a number of survey points of the material to be compacted during compaction work using electromagnetic measurement device and controlling the operation on the compaction device based on determined compaction performance index values. Determination of the compaction performance index includes sending at east one wideband electromagnetic pulse to the material to be compacted with a ground penetrating radar, receiving a reflected signal, measuring the power spectral density and peak to peak amplitude from the reflected signal and calculating the compaction performance index by using the measured density and amplitude.

The invention relates to a milling machine having a replaceable milling drum, different types of milling drums being capable of being associated with the milling machine; and having a control unit for controlling the milling machine, machine parameters of the milling machine being settable by way of the control unit. Provision is made that the milling machine has associated with it at least one means that is designed to detect at least one characteristic feature of the milling drum; that the at least one means is connected to the control unit; and that the control unit is designed to specify for at least one machine parameter, indirectly or directly from the characteristic feature, a value to be set, and/or a setting range. The invention further relates to a corresponding milling drum and to a corresponding method. The milling machine, milling drum, and method allow the selection of machine parameters for operation of the milling machine to be simplified.

The invention relates to a milling machine having a replaceable milling drum, different types of milling drums being capable of being associated with the milling machine; and having a control unit for controlling the milling machine, machine parameters of the milling machine being settable by way of the control unit. Provision is made that the milling machine has associated with it at least one means that is designed to detect at least one characteristic feature of the milling drum; that the at least one means is connected to the control unit; and that the control unit is designed to specify for at least one machine parameter, indirectly or directly from the characteristic feature, a value to be set, and/or a setting range. The invention further relates to a corresponding milling drum and to a corresponding method. The milling machine, milling drum, and method allow the selection of machine parameters for operation of the milling machine to be simplified.

A milling machine has a frame, a rotor, a mixing chamber with a front door and a rear door, and a controller. The controller is in communication with the frame, the rotor, the front door, and the rear door, and configured to operate the milling machine in a travel mode and a work mode. When the travel mode is actuated, the controller raises the rotor to a predetermined position, closes the front door and the rear door, and raises the frame to a predetermined height. When the work mode is actuated, the controller lowers the frame to a predetermined height, lowers the rotor to a predetermined position, and opens the front door and the rear door to predetermined positions.

A milling machine has a frame, a rotor, a mixing chamber with a front door and a rear door, and a controller. The controller is in communication with the frame, the rotor, the front door, and the rear door, and configured to operate the milling machine in a travel mode and a work mode. When the travel mode is actuated, the controller raises the rotor to a predetermined position, closes the front door and the rear door, and raises the frame to a predetermined height. When the work mode is actuated, the controller lowers the frame to a predetermined height, lowers the rotor to a predetermined position, and opens the front door and the rear door to predetermined positions.

Disclosed is an automotive road construction machine, particularly a recycler or a cold stripping machine, comprising an engine frame that is supported by a chassis, a working roller which is stationarily or pivotally mounted on the engine frame and is used for machining a ground surface or road surface. The chassis is provided with wheels or tracked running gears which are connected to the engine frame via lifting column and are vertically adjustable relative to the engine frame. Each individually vertically adjustable lifting column is equipped with a device for measuring the actual vertical state of the lifting column.

Disclosed is an automotive road construction machine, particularly a recycler or a cold stripping machine, comprising an engine frame that is supported by a chassis, a working roller which is stationarily or pivotally mounted on the engine frame and is used for machining a ground surface or road surface. The chassis is provided with wheels or tracked running gears which are connected to the engine frame via lifting column and are vertically adjustable relative to the engine frame. Each individually vertically adjustable lifting column is equipped with a device for measuring the actual vertical state of the lifting column.

An elongated polymeric impermeable geomembrane sheet having opposing first and second surfaces with a plurality of spaced-apart first projections extending from the first surface, said first projections each tapering to a pointed apex at a distal extent, which first projections for mechanically engaging a synthetic drainage geomesh sheet overlaid by a tufted geotextile sheet and in contact with adjacent fill materials within the aggregation, whereby the aggregation has increased resistance to shear failure of the aggregation of fill materials and reducing stabilization failures of materials aggregation applications. A ground covering closure system is disclosed.

A soil preparation roller system for a soil preparation machine includes a roller body rotatable around a roller rotational axis having a carrier structure for the rotatable mounting of the roller body and having a carrier jacket supported on the radial outside on the carrier structure, a group of working jackets to be positioned abutting a carrier jacket outer side and providing a working outer side of a soil preparation roller. Each working jacket includes a plurality of working jacket segments to be arranged successively in the circumferential direction completely enclosing the roller body annularly, and the group of working jackets includes at least two working jackets having essentially equal mass to one another.

A soil preparation roller system for a soil preparation machine includes a roller body rotatable around a roller rotational axis having a carrier structure for the rotatable mounting of the roller body and having a carrier jacket supported on the radial outside on the carrier structure, a group of working jackets to be positioned abutting a carrier jacket outer side and providing a working outer side of a soil preparation roller. Each working jacket includes a plurality of working jacket segments to be arranged successively in the circumferential direction completely enclosing the roller body annularly, and the group of working jackets includes at least two working jackets having essentially equal mass to one another.