A road finisher having a primary drive unit, a material hopper and a paving screed with a screed heating system that can be operated by energy generated by the primary drive unit is controlled. The screed heating system is operated to heat the screed during paving operation of the road finisher by controlling a temperature of the screed to a predetermined screed operating temperature value or to a predetermined screed operating temperature range. The road finisher anticipates a future operating state of increased energy demand of the road finisher. When a future operating state of increased energy demand has been detected, the screed heating system is operated to heat the screed beyond the predetermined screed operating temperature value or the predetermined screed operating temperature range. When the operating state of increased energy demand is reached, the screed heating system is at least temporarily deactivated.

A pavement repair system utilizes solid phase auto regenerative cohesion and homogenization by liquid asphalt oligopolymerization technologies. The system is suitable for use in repairing asphalt pavement, including pavement exhibiting a high degree of deterioration (as manifested in the presence of potholes, cracks, ruts, or the like) as well as pavement that has been subject to previous repair and may comprise a substantial amount of dirt and other debris (e.g., chipped road paint or other damaged or disturbed surfacing materials). A system utilizing homogenization by liquid asphalt oligopolymerization is suitable for rejuvenating or repairing aged asphalt, thereby improving properties of the paving material.

A wheeled asphalt paver vehicle provides a combination of a remixing hopper and a paving screed in a single vehicle. An optional loading conveyor carried by the vehicle facilitates loading of asphalt mix or other paving material into the hopper. A mixer within a lower portion of the hopper keeps the asphalt materials mixed therein. An output conveyor draws asphalt material from the hopper and into a screed for laying onto a surface over which the vehicle is traveling. An optional flow diverter between the output conveyor and the screed is adjustable to provide a greater proportion of the asphalt material to a left side or a right side of the screed. The vehicle can conveniently be controlled by fewer operators than when a separate paver vehicle and a separate remixer vehicle are utilized.

A screed assembly for use with a paving machine. The screed assembly can comprise: a screed plate; a holder configured to be removably connected to the screed plate and configured to be positioned thereon, wherein when connected thereto the screed plate and the holder form a channel having an opening at one end thereof; and a heater assembly having a heating element configured to be received in the channel and to be aligned by the holder when so received relative to an axis of symmetry of the screed plate.

A road finisher comprising a screed plate extending at right angles to the working direction of the road finisher, and a tamper bar disposed rearwardly and/or forwardly of the screed plate in the working direction, wherein at least one electrically operated heating element is present, which is configured so as to heat up a heating surface facing a road subsurface, and wherein the heating element comprises a heating layer at least partially obtained through thermal spraying onto a substrate surface, wherein the tamper bar is made from two parts with an upper tamper bar member and a lower tamper bar member assembled together. Further, a tamper bar for a road finisher and a method of manufacturing a tamper bar are provided.

A paving machine includes an engine, a material conveying system, a screed system including a plurality of screed heaters, and an emulsion sprayer system. The emulsion sprayer system includes an emulsion tank and one or more emulsion heaters. The machine further includes an engine load sensing system and a control system. The control system being configured to receive information from the engine load sensing system indicative of a load on the engine, and limit the operation of the one or more emulsion heaters when the received information indicates the load on the engine is above a value.

A heating element hold-down assembly having a heating element adapted to be removably mounted on the screed and a hold-down mechanism adapted to be removably mounted on the screed. The hold-down mechanism comprises a hold-down mechanism frame adapted to contact the heating element, a resilient device adapted to move between an expanded position and a contracted position, a tension shaft, a portion of which is adapted to contact the resilient device, a pin adapted to removably attach the tension shaft to the hold-down mechanism frame, and an adjustment means adapted to be adjustably connected to the screed frame so as to contact the tension shaft. The hold-down mechanism is adapted to maintain contact between the heating element and the screed plate when the screed moves, flexes, or is adjusted.

A compaction compensation system comprising a mechanism for automatically height adjusting the height adjustable mounting (30) so as to height adjust the sensor relative to the screed by a compaction compensating factor. It is used in a paving machine (1) for laying compactable paving material, the paving machine comprising: (a) a height adjustable screed (5) for laying a layer of compactable paving material onto a surface; (b) a sensor (15,17) for sensing the height of the screed relative to a reference level, the sensor being attached to the screed by a height adjustable mounting; (c) a screed height control system for automatically adjusting the height of the screed in response to different heights sensed by the sensor due to contours of the surface, so as to adjust the screed to lay a layer of varying thickness.

A system for controlling heating of a screed plate includes screed plate disposed along the paving material delivery path. A first temperature sensor is operative to monitor a screed plate temperature and a second temperature sensor along the paving material delivery path is operative to monitor an actual paving material temperature of a paving material being applied to a work surface. A controller is configured to determine an estimated paving material temperature adjacent the screed plate based upon the actual paving material temperature and operate a heater to maintain the screed plate temperature within a temperature variation range relative to the estimated paving material temperature.

A road paver comprises a generator, a control device and a screed, the screed comprising a basic screed and being suited to be modified, by selectively attaching or detaching broadening parts, from a first to at least a second, different screed configuration. The basic screed and the broadening parts each comprise one compacting unit and one electric heating element to be supplied with power from the generator for heating the compacting unit to prevent the laying material from adhering to the compacting unit and to finish a high-quality road pavement. The control device is configured to individually switch on or off each one of the two resistance wire windings of the heating element of the basic screed depending on the screed configuration determined by the control device to distribute electrical power generated by the generator to the individual resistance wire windings.