A method of determining optimal frequency to load haul trucks can include a central controller receiving an indication of the amount of paving material at a paving machine, and an indication of production rate of the paving machine. The central controller can then determine when more paving material should be provided to the paving machine. Based on this determination, the central controller can provide alerts or triggers to a paving material plant to indicate when haul trucks should be loaded to provide additional paving materials to the paving machine.

Roadway resurfacing often requires removal of the existing asphalt from the roadway for reuse. One method of resurfacing a roadway is hot-in-place recycling. Hot-in-place recycling employs substantial heat to remove the oxidized or aged asphalt. This heat further oxidizes the asphalt, creating a material that lacks many desirable properties (e.g., flowability) and flexibility. The disclosure provides compositions and methods that enhance oxidized asphalt, making it more viable for use in resurfacing roadways. Accordingly, compositions comprising recycled asphalt pavement and a rejuvenating agent are disclosed. The compositions combine a rejuvenator and fresh asphalt flux to make a modified asphalt rejuvenator. The modified rejuvenator is then mixed with recycled asphalt pavement to form a rejuvenated asphalt composition.

Applicator and method for applying melted rubber to pavement comprises a melting vat having a substantially planar bottom with a surface area, and a wide-area a heating element beneath the melting vat having a surface area more than half the surface area of the planar bottom of the melting vat and positioned beneath the melting vat. The heating element may be comprised of an aluminum oxide ceramic blanket. A double-walled construction of the vat with exhaust holes in the outer wall allows exhaust to evenly melt rubber in the vat to reduce burning of the rubber, flame blowouts, and improve fuel efficiency.

Applicator and method for applying melted rubber to pavement comprises a melting vat having a substantially planar bottom with a surface area, and a wide-area a heating element beneath the melting vat having a surface area more than half the surface area of the planar bottom of the melting vat and positioned beneath the melting vat. The heating element may be comprised of an aluminum oxide ceramic blanket. A double-walled construction of the vat with exhaust holes in the outer wall allows exhaust to evenly melt rubber in the vat to reduce burning of the rubber, flame blowouts, and improve fuel efficiency.

A concrete/cement resurfacing machine integrates a dust collection subsystem and an overlay mixing/distribution subsystem, enabling a single operator to steer the machine to a desired floor location and deposit mixed, cementitious overlay material. The combination of dust collection and overlay mixing saves considerable time and achieves improved results, eliminating the need for separate vacuum machines while reducing the risk that dust will be released as bags of dry ingredients are added to the mixing tank. A single propane engine powers a hydraulic pump, with fluid being routed to three separate hydraulic motors with associated control valves to provide for forward/reverse locomotion, bidirectional paddle mixing, and vacuum generation. The dust collection system is preferably a two-stage system including a vacuum collection tank and a HEPA filter.

A concrete/cement resurfacing machine integrates a dust collection subsystem and an overlay mixing/distribution subsystem, enabling a single operator to steer the machine to a desired floor location and deposit mixed, cementitious overlay material. The combination of dust collection and overlay mixing saves considerable time and achieves improved results, eliminating the need for separate vacuum machines while reducing the risk that dust will be released as bags of dry ingredients are added to the mixing tank. A single propane engine powers a hydraulic pump, with fluid being routed to three separate hydraulic motors with associated control valves to provide for forward/reverse locomotion, bidirectional paddle mixing, and vacuum generation. The dust collection system is preferably a two-stage system including a vacuum collection tank and a HEPA filter.

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.

An asphalt aggregate paver (1) for asphalting a surface (116) to be asphalted includes an asphalt aggregate receiving hopper (2), width-wise spreading means (4) for distributing the aggregate over the surface (116), and conveyor means (6) arranged between the receiving hopper (2) and the spreading means (4) for feeding said spreading means (4), by conveying said aggregate from the hopper to said spreading means (4) in a longitudinal direction (L). The paver further includes mixing means (8), which are a separate element of said conveyor means (6). The mixing means (8) are arranged between said receiving hopper (2) and said spreading means (4), and the mixing means (8) are movable with respect to the conveyor means (6) for stirring the aggregate when it is conveyed. The mixing means (8) are arranged outside and after the receiving hopper (2).

An asphalt aggregate paver (1) for asphalting a surface (116) to be asphalted includes an asphalt aggregate receiving hopper (2), width-wise spreading means (4) for distributing the aggregate over the surface (116), and conveyor means (6) arranged between the receiving hopper (2) and the spreading means (4) for feeding said spreading means (4), by conveying said aggregate from the hopper to said spreading means (4) in a longitudinal direction (L). The paver further includes mixing means (8), which are a separate element of said conveyor means (6). The mixing means (8) are arranged between said receiving hopper (2) and said spreading means (4), and the mixing means (8) are movable with respect to the conveyor means (6) for stirring the aggregate when it is conveyed. The mixing means (8) are arranged outside and after the receiving hopper (2).

An object of the present invention is to provide a method for constructing a base course without rolling compaction, in which a compacting step by rolling compaction and further adjustment of the water content of the mixture to the optimum water content are not necessary, and to provide a mixture for base course, which enables the said method. The above object is attained by providing a method for constructing a base course without rolling compaction, which comprises a step of obtaining a mixture by mixing an aggregate, an asphalt emulsion, and a cement, wherein the mixture is in a high-water-content state in which a water content of the mixture is above an optimum water content of the aggregate, and a step of spreading the mixture; and which does not comprise a step of rolling compaction, and by providing a mixture for a base course, comprising an aggregate, an asphalt emulsion, and a cement, wherein the mixture is in a high-water-content state in which a water content of the mixture is above an optimum water content of the aggregate.