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 system and method treating a horizontal surface of uncured concrete. The surface treatment system comprises a boom mounted to a vehicle body and an implement mounted to a mounting plated disposed at the working end of the boom. The implement comprises a texturing brush configured to engage a horizontal surface of the uncured concrete to apply a texture pattern thereto. The implement also comprises a first and second spray bars. The first spray bar is configured to apply a first chemical to the bristles of the texturing brush when in an engaged position. The second spray bar is configured to concurrently apply a second chemical to the textured surface of uncured concrete while the texturing brush is applying the texture pattern to the horizontal surface of the uncured concrete.

A vehicle (1), preferably an unmanned and/or autonomous vehicle, for example a robot, the vehicle (1) comprising: a propulsion system (10), arranged to propel the vehicle (1), comprising a set of wheels (11) including a first wheel (11A) and/or a set of tracks (12) including a first track (12A); a deposition apparatus (20) for depositing a foam F comprising a polymeric composition (PC); and a controller (30) arranged to control the deposition apparatus (20) and optionally, the propulsion system (10); wherein the deposition apparatus (20) comprises: a set of reservoirs (100), including a first reservoir (100A) and a second reservoir (100B) arranged to receive therein a first component (C1) and a second component (C2) of the polymeric composition (PC), respectively; optionally a set of pumps (200), including a first pump (200A) and a second pump (200B) arranged to pump the first component (C1) and the second component (C2) from the first reservoir (100A) and the second reservoir (100B), respectively; a blending chamber (300) in fluid communication with the set of reservoirs (100) via a set of inlet passageways (400), including a first inlet passageway (400A) and a second inlet passageway (400B), wherein the blending chamber (300) is arranged to blend the first component (C1) and the second component (C2) thereinto provide a precursor (P) of the poly-meric composition (PC); and a set of deposition nozzles (500) in fluid communication with the blending chamber (300) via a set of outlet passageways (600) including a first outlet passageway (600A), the set of deposition nozzles (500) including a first deposition nozzle (500A) comprising a static mixer (700A) arranged to mix the precursor (P) to generate the foam (F), at least in part, therefrom.

A vehicle (1), preferably an unmanned and/or autonomous vehicle, for example a robot, the vehicle (1) comprising: a propulsion system (10), arranged to propel the vehicle (1), comprising a set of wheels (11) including a first wheel (11A) and/or a set of tracks (12) including a first track (12A); a deposition apparatus (20) for depositing a foam F comprising a polymeric composition (PC); and a controller (30) arranged to control the deposition apparatus (20) and optionally, the propulsion system (10); wherein the deposition apparatus (20) comprises: a set of reservoirs (100), including a first reservoir (100A) and a second reservoir (100B) arranged to receive therein a first component (C1) and a second component (C2) of the polymeric composition (PC), respectively; optionally a set of pumps (200), including a first pump (200A) and a second pump (200B) arranged to pump the first component (C1) and the second component (C2) from the first reservoir (100A) and the second reservoir (100B), respectively; a blending chamber (300) in fluid communication with the set of reservoirs (100) via a set of inlet passageways (400), including a first inlet passageway (400A) and a second inlet passageway (400B), wherein the blending chamber (300) is arranged to blend the first component (C1) and the second component (C2) thereinto provide a precursor (P) of the poly-meric composition (PC); and a set of deposition nozzles (500) in fluid communication with the blending chamber (300) via a set of outlet passageways (600) including a first outlet passageway (600A), the set of deposition nozzles (500) including a first deposition nozzle (500A) comprising a static mixer (700A) arranged to mix the precursor (P) to generate the foam (F), at least in part, therefrom.

A coating applicator vehicle is configured to selectively discharge a flow of liquid emulsion and aggregate onto a roadway. The vehicle includes a rolling chassis and a powered spraying assembly supported by the chassis. The spraying assembly includes a spray bar assembly including a shiftable spray boom and a plurality of spray nozzles.

The present invention proposes a roller for asphalt compaction, in particular a rubber tire roller, comprising: a rubber tire, a spray device for spraying a rubber tire with a separation agent mixture composed of a first liquid and a second liquid, a first tank for the first liquid and a second tank for the second liquid, characterized in that the rubber tire roller, in order to form the separation agent mixture, comprises a mixing device for mixing the first liquid supplied by the first tank and the second liquid supplied by the second tank. Further, the present invention relates to a method for spraying a rubber tire of a roller for asphalt compaction with a separation agent mixture.

A spray assembly for a working machine that includes a fluid storage tank includes a plurality of nozzle assemblies, each of which includes a direct acting valve. The spray assembly also includes a controller that is operatively connected to each of the direct acting valves for controlling the opening and closing of the direct acting valves, and a selector that is operatively connected to the controller. The selector 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.

This disclosure relates to an adjustable paving machine. In some examples, the adjustable paving machine includes a variably expandable portion. The variably expandable portion may be expandable laterally such as to accommodate paving operations of variable widths. The adjustable paving machine may be configured to spread a variety of paving materials on a paving surface, including oils, emulsions, asphalt, slurries, or the like. The adjustable paving machine may include a containment basin operative to contain a paving material such as to reduce lateral or longitudinal movement of the paving material. The adjustable paving machine may include an adjustable shoe configured to move the paving machine vertically relative to the paving surface. The adjustable paving machine may include one or more spreading elements configured to spread the paving material on the paving surface. The spreading elements may be supported by a spreading element support enabling easy replacement of the spreading elements.

A spreading device is disclosed for spreading vehicles for discharging spreading agents. The spreading device includes at least one tank for receiving liquid spreading agents to be spread and at least one rotationally-driven discharge device, connected via a provided supply unit to the tank. The discharge device has at least one base body and one cover securely connected to the base body, wherein the base body defines a receiving chamber (AR) for the supplied liquid spreading agent and is in the shape of a cylinder. The base body has at least one bottom section, forming an underside (U) of the discharge device, with an inlet opening and at least one wall section projecting from the bottom section and concentrically surrounding an axis of rotation (RA). The discharge device has multiple discharge units, each having a discharge opening, for dispensing the liquid spreading agent from the receiving chamber (AR).

A spraying system for a road construction machine includes an emulsion fluid delivery system including an emulsion fluid supply, an emulsion pump, at least one spray bar with one or more nozzles, and flow conduits arranged to convey emulsion through the emulsion fluid delivery system. The spraying system may include a cleaning fluid tank containing a cleaning fluid, where the cleaning fluid tank is fluidly coupled to the emulsion fluid delivery system during a cleaning process. The spraying system may also include a flow monitoring system configured to monitor the amount of cleaning fluid delivered from the cleaning fluid tank to the emulsion fluid delivery system, where the flow monitoring system is configured to provide an indication regarding the amount of cleaning fluid delivered to the emulsion fluid delivery system during the cleaning process.