A system and process for detecting dynamic segregation in concrete rotated within a mixer drum, such as mounted on a delivery truck. A system processor is programmed to monitor an instantaneous and averaged rheology parameter and to deploy protocols for detecting segregation. A first protocol comprises monitoring the averaged slump during and immediately after a jump in drum speed of at least plus or minus four rotations per minute and detecting when a change in the averaged slump value meets or exceeds a threshold; and a second protocol comprises monitoring the instantaneous slump when the mixer drum is rotating at a constant speed for at least three successive rotations and detecting when the instantaneous slump value meets or exceeds a threshold limit. Once segregation is detected, one or more operations can be initiated, such as initiating an alarm or adjusting the mix.

A method includes receiving first location information at a first reporting frequency, the first location information being generated by a location sensor and indicating a first location of a paving system component. The method also includes determining that a distance between a second location of the paving system component and a first geofence is less than or equal to a distance threshold. The method further includes controlling the location sensor to provide second location information at the first reporting frequency, and receiving third location information at the first reporting frequency. In such a method, the third location information indicates a third location of the paving system component. The method also includes determining that the third location is within the first geofence, and controlling the location sensor to provide fourth location information at a second reporting frequency greater than the first reporting frequency.

A method includes receiving information indicative of a cold planer travel path extending along a work surface, determining a mobile machine travel path extending along the work surface based at least partly on the information indicative of the cold planer travel path, and receiving sensor information associated with the work surface, wherein the sensor information is determined by at least one sensor of an autonomous mobile machine as the autonomous mobile machine traverses the mobile machine travel path. The method also includes generating a worksite map based at least partly on the sensor information, the worksite map identifying an object, wherein the object is disposed at least partly beneath a cut area to be formed by a cold planer, and controlling a position of a rotor of the cold planer, relative to the work surface and based at least partly on a location of the object identified in the worksite map.

An example cold planer system includes a machine frame, a milling drum, a first conveyor, a second conveyor, a swivel sensor and a control module. The milling drum is rotatably coupled to the machine frame. The first conveyor is configured to convey a milled material away from the milling drum. The second conveyor is configured to convey the milled material from the first conveyor to a discharge location and the second conveyor is pivotably connected to the machine frame. The swivel sensor is configured to generate swivel data corresponding to a swivel position of the second conveyor. The control module is in electrical communication with the swivel sensor, and the control module is configured to receive the swivel data and to control motion of the second conveyor based on the swivel data.

A continuous asphalt mixture production plant based on double-horizontal-shaft forced mixing includes a cold aggregate bin, a continuous aggregate conveying and metering system, a drying drum, an aggregate elevator, a double-horizontal-shaft continuous mixing host, a continuous asphalt metering and conveying system, a continuous powder conveying and metering system and a finished product bin. The double-horizontal-shaft continuous mixing host includes a first double-horizontal-shaft mixing cylinder and a second double-horizontal-shaft mixing cylinder connected in series. The first double-horizontal-shaft mixing cylinder is provided with an aggregate inlet, an asphalt inlet, a powder inlet and a first discharging port, and the second double-horizontal-shaft mixing cylinder is provided with a mixture inlet and a second discharging port. The aggregate inlet, the asphalt inlet and the powder inlet are respectively connected with an outlet of the aggregate elevator, the continuous asphalt metering and conveying system and the continuous powder conveying and metering system correspondingly.

A system and process for detecting dynamic segregation in concrete rotated within a mixer drum, such as mounted on a delivery truck. A system processor is programmed to monitor an instantaneous and averaged rheology parameter (e.g., instantaneous and averaged slump values) and to deploy one or more protocols for detecting the occurrence of segregation. A first protocol comprises monitoring the averaged slump or other rheology value of concrete during and immediately after a jump in drum speed of at least plus or minus four rotations per minute and detecting when a change in the averaged slump value meets or exceeds a threshold limit pre-selected by the user or the system processor; and an optional second protocol comprises monitoring the instantaneous slump or other rheology value of the concrete when the mixer drum is rotating at a constant speed for at least three (and more preferably for at least five) successive rotations and detecting when the instantaneous slump value meets or exceeds a threshold limit pre-selected by the user or processor. Preferably, both protocols are used, in any sequence, to confirm segregation within the rotating drum. Once segregation is detected, one or more operations can be initiated, such as sending an alarm or signal to the operator to confirm dynamic segregation is detected, introducing an admixture to mitigate the segregation, sending data to the batch plant for adjusting the mix design for subsequent deliveries, or other operations.

A system and process for detecting dynamic segregation in concrete rotated within a mixer drum, such as mounted on a delivery truck. A system processor is programmed to monitor an instantaneous and averaged rheology parameter and to deploy protocols for detecting segregation. A first protocol comprises monitoring the averaged slump during and immediately after a jump in drum speed of at least plus or minus four rotations per minute and detecting when a change in the averaged slump value meets or exceeds a threshold; and a second protocol comprises monitoring the instantaneous slump when the mixer drum is rotating at a constant speed for at least three successive rotations and detecting when the instantaneous slump value meets or exceeds a threshold limit. Once segregation is detected, one or more operations can be initiated, such as initiating an alarm or adjusting the mix.

In a system and method for processing recycled asphalt pavement or aggregate for asphalt production, a heating and drying unit includes a trough positioned within an external housing. A hollow auger is positioned in the trough, such that the recycled asphalt pavement or aggregate received at a first end of the trough is transported to a second end of the trough via rotation of the hollow auger. The trough is constructed of two or more sections to allow for thermal expansion, with only one end of each of the two or more sections connected to the external housing. Heated air is introduced into the trough via an inlet and exits the trough via an outlet. Heated oil is pumped through the hollow auger, entering via an inlet and exiting via an outlet. The heated air and heated oil raise the temperature of the recycled asphalt pavement or aggregate.

A paving system includes a paving machine including a drive assembly, a paving material delivery system, and a material depth sensor. The paving material delivery system includes a hopper, a conveyor assembly, an auger, and a screed. The material depth sensor is configured to detect a head of paving material in front of the screed. The paving machine further includes a controller in communication with the material depth sensor. The controller is configured to receive a feed sensor signal from the material depth sensor, receive an auger speed signal indicative of a speed of the auger, and adjust a conveyor speed based on at least one of the feed sensor signal and the auger speed signal.

A system and method for monitoring and adjusting a constant flow asphalt manufacturing process includes monitoring the ratios of recycled material to virgin material to minimize costs and adjusting the mixture in real time. Pulverized asphalt shingle (PAS) material may be used as a source of recycled asphalt oil and fed to a mixing drum with real-time monitoring while making real-time adjustments to supplement the asphalt with new asphalt oil to the mixer. The systems and methods may also be used for monitoring, metering, and supplementing recycled aggregate from recycled asphalt pavement (RAP) with new aggregate. The systems and methods may use one or more processors or programmable logic controllers (PLC) to meter the addition of new materials.