A system for compaction measurement includes a first compaction measurement apparatus arrangeable on a compaction machine and configured to determine, on the basis of a measured acceleration of a measurement probe of the first compaction measurement apparatus as a result of a measurement vibration and/or an acceleration of a compaction element of the compaction machine, at least one first stationary compaction value that informs about a local compaction of the subsoil or the surfacing for at least a first position, and to output the same with associated positional information for the first position; a second compaction measurement apparatus being mobile and configured to identify, upon interaction or contact with the subsoil or the surface, the local compaction of the subsoil or the surfacing for at least the first position and to output, on the basis thereof, at least one first mobile compaction value with associated positional information for the first position;

and a calculation unit configured to compare the first stationary compaction value and the first mobile compaction value so as to determine a correction value that depends on the deviation of the first stationary compaction value from the first mobile compaction value, or to determine and display a deviation.

A machine includes a frame, a plurality of ground engaging members associated with the frame, the plurality of ground engaging members configured to move the machine along a ground surface, a ground sensor attached to the frame, the ground sensor providing ground surface information, and an electronic controller associated with the frame. The electronic controller is programmed and configured to receive the ground surface information from the ground sensor, estimate a location of the ground surface relative to the frame of the machine, establish a height difference between the location of the ground surface and the frame of the machine, monitor the height difference continuously during operation of the machine, and provide a sunk condition indication when the height difference reduces below an acceptable threshold.

A compaction machine includes a frame and at least one compaction member rotatably mounted to the frame. The compaction machine also includes at least one pneumatic tire movably coupled to the frame. The at least one pneumatic tire is disposed on at least one of a first side and a second side of the at least one compaction member and adjacent to an edge of the at least one compaction member. The at least one pneumatic tire is adapted to selectively move between a deployed position and a retracted position. In the retracted position, the at least one pneumatic tire is raised relative to a work surface. In the deployed position, the at least one pneumatic tire is adapted to provide selective compaction of a portion of the work surface.

An accessory for levelling uncured concrete surfaces. The accessory includes a screed head with two height adjusting levelling cylinders (1), a slope cylinder (2), a coupling component (3), a blade (4), an auger (5), a roller (6), a vibrator (7) and a sprinkler system (8). The coupling component (3) includes a hand operated hinged latch with a hook able to be snapped in place in a single movement so as to pinch together the coupling component and a telescopic boom of a general-purpose vehicle. The slope cylinder (2) enables the screed head to be maintained continuously at ninety degrees to the horizontal.

A method includes determining a first temperature of paving material, determining a first location of a paving machine corresponding to the first temperature, determining a second temperature of the paving material, and determining a second location of the paving machine corresponding to the second temperature. The method also includes generating a paving material map based at least partly on the first and second temperatures, and the first and second locations. The method further includes causing at least part of the paving material map to be displayed. The displayed at least part of the paving material map including visual indicia indicating the first temperature and the second temperature.

A hand-guided ground compaction machine, in particular a vibratory tamper or vibration plate compactor, having a superstructure, a drive device arranged on the superstructure and having at least one drive shaft, a substructure having a compaction plate driven by the drive device, and a sensor device comprising an accelerometer for determining the ground stiffness of a ground to be compacted, wherein the sensor device is supplied with electrical power, in particular solely, by a generator driven by the at least one drive shaft.

A compactor can optionally include a steering system configured to direct the movement of the compactor, a temperature sensor configured to generate data indicative of a temperature of a material that forms a surface of the compacting area, and a controller coupled to the machine and communicatively coupled to the temperature sensor. The controller can be configured to: receive data indicative of the temperature of the material from the temperature sensor, determine if the temperature exceeds a first threshold temperature, and if the temperature of the compactor exceeds the first threshold temperature, control the steering system to limit a turning angle to a predetermined value such that a turning radius of the compactor is increased.

A ground compaction roller, in particular a tandem roller or a single-drum roller, having a machine frame, a drive unit, at least one roller drum mounted on the machine frame for rotation about a rotation axis, an exciter device arranged at least partially in the roller drum, and a sensor device for measuring the compaction of a ground achieved by a passage of the ground compaction roller, said sensor device being arranged on the roller drum in the region of the rotation axis and rotating together with the roller drum during operation of the ground compaction roller. The invention also relates to a method for ascertaining the ground stiffness during ground compaction with a ground compaction roller, in particular a tandem roller or a single-drum roller, comprising the steps of: measuring the acceleration directly at a roller drum which rotates during operation, ascertaining the ground stiffness from the measured values, wirelessly transmitting the measured values and/or the ground stiffness values to a receiving device.

A ground penetrating radar device and/or other sensor such as LIDAR, pressure, or temperature sensors is mounted on a mobile device, and is adapted, during motion of the mobile device, to sense characteristics of asphalt pavement on which the mobile device is moving, prior to compaction of the asphalt pavement by rollers. A processor, functionally associated with at least one sensor, receives from the sensor signals relating to characteristics of the asphalt pavement on which the mobile device is moving, and computes, based on the received signals, at least one compaction characteristic of the asphalt pavement. The processor provides a mapping of computed desired change in compaction characteristics to regions of the asphalt pavement during the rolling process. During rolling, at least one sensor measures the change in compaction and assesses when the change in compaction matches the desired optimal compaction based on the pre-generated map.

A compaction control system for and methods of accurately determining properties of compacted and/or existing ground materials is disclosed. The compaction control system includes a compaction machine that further includes a vibratory drum (or roller). The compaction machine is equipped with sensors to determine position and heading, vibration amplitudes at selected frequencies, and material type and moisture content information. Further, the compaction control system includes a controller and certain algorithms for processing the sensor information. Namely, a method is provided of using the sensor information to assess the improvement in compaction and then determine whether and/or when further ground improvement solutions are needed.