The disclosure refers to a road finisher for producing a paving layer on a subgrade on which the road finisher moves along a paving direction during a paving run. In accordance with the disclosure, the road finisher is adapted to use distance measurements to a subgrade, which can be provided to a leveling system of the road finisher, equally as measured values for determining the thickness of a layer. The disclosure also refers to a respective method for determining the layer thickness.

Disclosed are asphalt binder compositions and methods for making such compositions with pure sterol:crude sterol blends. The sterol blends improve various rheological properties.

A method for the preparation of concretes with improved wear resistance. The method involves the use of colloidal silica, which is added to a concrete mixture after mixing, in conjunction with a concrete cutter, which is added to the concrete mixture after the addition of the colloidal silica.

A method for preparing hot mix asphalt, which utilize solid phase auto regenerative cohesion and homogenization by liquid asphalt oligopolymerization technologies. The mixtures are suitable for use in installing asphalt/concrete pavement, repairing asphalt/concrete pavement, and providing overlays to existing asphalt/concrete pavement. The slurries can contain recycled asphalt/concrete pavement subject to treatment.

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.

A paving machine for spreading, leveling and finishing concrete having a main frame, center module, bolsters laterally movably, and a crawler track associated with respective aft and forward ends of the bolsters. A bolster swing leg for each crawler track supports an upright jacking column. A worm gear drive permits rotational movements of the crawler track and the jacking column. A hinge bracket is interposed between each swing leg and a surface of the bolsters to enable pivotal movements of the swing leg. A length-adjustable holder engages the pivot pin on the hinge bracket and pivotally engages the swing leg. The holder permits pivotal motions of the swing leg in its length-adjustable configuration and prevents substantially any motion of the swing leg in its fixed-length configuration. A feedback loop cooperates with transducers keeping the crawler tracks position. The paving machine can be reconfigured into a narrowed transport configuration.

A locomotive (10) for spreading a waterproof coil in a hot melt manner. The locomotive (10) for spreading a waterproof coil in a hot melt manner comprises: a locomotive frame (11), provided with a coil support (12); and wheel devices, a spreading device, a combustion and heating device and a coil compaction device that are disposed on the locomotive frame (11). The combustion and heating device comprises a combustion chamber (6) and a mixing chamber (2). The mixing chamber (2) is provided with a fuel gas inlet end (5), an air inlet end (28), and an outlet end (29). The outlet end (29) is connected to the combustion chamber (6). Multiple gas discharge holes (7) are formed in one side surface of the combustion chamber (6) in an axial direction. The locomotive (10) for spreading a waterproof coil in a hot melt manner improves the construction efficiency, reduces human power costs and reduces consumption of fuel gas.

A method includes determining a first temperature of paving material, determining a first location of a paving machine corresponding to the first temperature, determining a second temperature of the paving material, and determining a second location of the paving machine corresponding to the second temperature. The method also includes generating a paving material map based at least partly on the first and second temperatures, and the first and second locations. The method further includes causing at least part of the paving material map to be displayed. The displayed at least part of the paving material map including visual indicia indicating the first temperature and the second temperature.

Asphalt binder compositions and methods for making such compositions with pure sterol:crude sterol blends. The sterol blends improve various rheological properties.

A method includes determining a first temperature of paving material, determining a first location of a paving machine corresponding to the first temperature, determining a second temperature of the paving material, and determining a second location of the paving machine corresponding to the second temperature. The method also includes generating a paving material map based at least partly on the first and second temperatures, and the first and second locations. The method further includes causing at least part of the paving material map to be displayed. The displayed at least part of the paving material map including visual indicia indicating the first temperature and the second temperature.