A paving machine includes a machine frame, a drive assembly, including at least two tracks, each driven by a drive wheel and one or more idlers, and a paving material delivery assembly including a hopper, a conveyor assembly, an auger, and a screed. The paving machine also includes a tank of emulsion fluid, a spray bar positioned on an underside of the machine frame between the at least two tracks and fluidly coupled to the tank to deliver the emulsion fluid to a ground surface.

A system and method for the application of friction-modifying coatings to roadways, walkways, pathways and other areas subject to vehicular, human or animal traffic, the system and method comprising the controlled, simultaneous application of binder and filler to a surface of a substrate, using a mobile device which passes over the substrate as the binder and filler are being applied. The system includes a frame coupled to a vehicle. A spray bar is mounted on the frame and includes an array of spray nozzles coupled to a resin container. An air knife is mounted on the frame and coupled to an air compressor for generating an air curtain. An aggregate dispenser bar including at least one aggregate dispenser is coupled to an aggregate bin and mounted on the frame for dispensing aggregate.

A method of resurfacing exposed surfaces of existing roads, and a resurfaced road. The method may include forming stress absorbing membrane interlayers (SAMIs) over the exposed surface of the existing road. The SAMIs may include a first layer of a binding material and a fiber material. The method may also include disposing an asphalt mixture directly over the SAMIs. The disposed asphalt mixture may cover the SAMIs. Additionally, the method may include shaping the asphalt mixture disposed over the SAMIs.

In some implementations, a controller may receive an input that indicates a proportion of a spray cycle in which a fluid spray system is to be active. The fluid spray system may include at least a first fluid pump configured to supply fluid to a first fluid spray bar and a second fluid pump configured to supply fluid to a second fluid spray bar. The controller may determine, in accordance with the proportion, a spraying timing for the first fluid pump and the second fluid pump that minimizes an overlap of an active time of the first fluid pump and an active time of the second fluid pump, and/or an overlap of an inactive time of the first fluid pump and an inactive time of the second fluid pump. The controller may cause activation of the first fluid pump and the second fluid pump in accordance with the spraying timing.

A boom screed machine including a chemical spray system. The boom screed machine includes a platform assembly, a boom, a vertical column, a plow head crossbar, a plow head, a tank, a pump, platform assembly tubing, a pressure regulating valve, a chemical spray fluid hose, a reel system, plow head crossbar tubing, a solenoid valve, and a spray head. The pump is configured to receive the chemical spray fluid and pump the chemical spray fluid through the platform assembly tubing, the chemical spray fluid hose, the plow head crossbar tubing, and the spray head when the solenoid valve is open and the pump is activated.

A method for operating a working machine including a fluid storage tank on a roadway includes providing a spray assembly that is in fluid communication with the fluid storage tank. The spray assembly further includes a plurality of nozzle assemblies, each of which comprises a direct acting valve having a solenoid switch assembly and a valve assembly. The spray assembly also includes a controller that is operatively connected to each of the direct acting valves for controlling the opening and closing thereof. The controller includes a power source, a spray control, an input module and an output module. The input module is operatively connected to the solenoid switch assembly of each nozzle assembly and to the spray control, and it is adapted to determine if the valve assembly of each nozzle assembly is open or closed. The output module is operatively connected to the spray assembly and to the power source, and it is adapted to energize the solenoid switch assembly of each nozzle assembly in the spray assembly. A selector is operatively connected to the controller and may be employed by an operator of the working machine to selectively operate one or more of the direct acting valves in order to provide a desired spray pattern of fluid from the fluid storage tank onto the roadway.

A CIR-modified milling machine includes a milling drum that is adapted to mill material from a roadway, which milling drum is contained in a milling drum housing. An additive spray assembly is located within the milling drum housing and adapted to dispense an asphalt additive therein. An additive flow system includes an inlet line that is adapted to be operatively connected to an external supply line, a surge tank for asphalt additive that is in fluid communication with the additive spray assembly, and an additive pump for pumping asphalt additive from the surge tank to the additive spray assembly.

A machine for resurface existing roads. The machine may include a first group of sprayers configured to form a first layer of binding material, and a fiber material distribution component positioned adjacent the first group of sprayers. The fiber material distribution component may be configured to distribute fiber material onto the first layer of the binding material. The machine may also include a second group of sprayers positioned adjacent the fiber material distribution component. The second group of sprayers may be configured to form a second layer of the binding material over the distributed fiber material. Additionally, the machine may include a channel positioned adjacent the second group of sprayers. The channel may be configured to supply an asphalt mixture over the second layer of the binding material. Further, the machine may include a screed positioned adjacent the conduit. The screed may be positioned to contact the asphalt mixture.

A modular spray assembly for a working machine includes a base assembly that is attached to the frame of the working machine. The base assembly includes a working fluid conduit having an open end and a closed end, and a plurality of nozzle assemblies that are attached to and are in fluid communication with the working fluid conduit. A modular component includes a nozzle assembly, a first end, and a second end. The second end of the modular component is adapted to be removably attached to the open end of the working fluid conduit so as to be in fluid communication with the working fluid conduit. The modular spray assembly also includes an open end component that is adapted to be removably and alternatively attached to the open end of the working fluid conduit or to the first end of the modular component. The open end component includes a working fluid supply pipe that is in fluid communication with the working fluid storage tank of the working machine.

A device for working ground surfaces or roadways comprising a machine frame and a working drum in a drum housing arranged at said machine frame, where no less than one spraying device extending parallel to the working drum and featuring several outlet nozzles for spraying agents arranged next to one another and directed towards the working drum is arranged at the drum housing, where the outlet nozzles comprise one each drivable closing mechanism with a closing element which, in an open position, fully uncovers the nozzle channel of the outlet nozzle and, in a closed position, closes the nozzle channel. A controller drives the closing mechanisms, with the outlet nozzles and the related closing elements being adapted to one another in such a fashion that the flow cross-section in the outlet nozzle is variable in accordance with the position of the closing element on a specified path between the open position and closed position.