In a self-propelled construction machine (1), in particular road milling machine, comprising a machine frame (8), at least three travelling devices (12, 16), at least one working device, in particular a milling drum (6), for working the ground pavement (3), at least one hydraulic drive system (70) for driving at least two travelling devices (12, 16), wherein the hydraulic drive system (70) comprises at least one hydraulic pump (78), wherein the hydraulic drive system (70) comprises at least one hydraulic fixed displacement motor (74) for driving at least one driven travelling device, and one each hydraulic variable displacement motor (72) for driving the remaining driven travelling devices that are not driven by a fixed displacement motor (74), wherein a first gearbox (90) is arranged between the fixed displacement motor (74) and the associated travelling device, and wherein one each second gearbox (92) is arranged between the remaining driven travelling devices and the respective hydraulic variable displacement motors (72),

it is provided for the following features to be achieved: the transmission ratio of the first gearbox between the fixed displacement motor (74) and the associated travelling device is lower than the respective transmission ratios of the second gearboxes (92), which are each arranged between the respective hydraulic variable displacement motors (72) and the respective travelling device, and/or the displacement volume of the fixed displacement motor (74) is smaller than the maximum displacement volume of the variable displacement motors (72).

A machine for road work for road work, the machine can comprise: a frame, a drive system including a power source carried by the frame, a milling system driven by the power source and a controller. The milling system can comprise: a rotor configured to rotate and remove an amount of material from a working area; a drive member coupling the rotor to be driven by the power source; a tensioner assembly configured to tension the drive member; and a sensor configured to measure the tension of the drive member. The controller can be configured to, in response to a signal received from the sensor, determine if the rotor has encountered an object capable of damaging the rotor.

Disclosed is an automotive road construction machine, particularly a recycler or a cold stripping machine, comprising an engine frame that is supported by a chassis, a working roller which is stationarily or pivotally mounted on the engine frame and is used for machining a ground surface or road surface. The chassis is provided with wheels or tracked running gears which are connected to the engine frame via lifting column and are vertically adjustable relative to the engine frame. Each individually vertically adjustable lifting column is equipped with a device for measuring the actual vertical state of the lifting column.

Disclosed is an automotive road construction machine, particularly a recycler or a cold stripping machine, comprising an engine frame that is supported by a chassis, a working roller which is stationarily or pivotally mounted on the engine frame and is used for machining a ground surface or road surface. The chassis is provided with wheels or tracked running gears which are connected to the engine frame via lifting column and are vertically adjustable relative to the engine frame. Each individually vertically adjustable lifting column is equipped with a device for measuring the actual vertical state of the lifting column.

A dry-bulk tanker for the provision of binding agents for soil stabilization for a spreading device comprises a storage container (10) for binding agent. A mechanical conveying device (18) for conveying binding agents from the storage container (10) into an intermediate chamber (20) is connected to the storage container (10). A pneumatic conveying device (36) for conveying the binding agent to the spreading device is connected to the intermediate chamber (20). A pressure relief device (40, 41) is connected to the mechanical conveying device in order to avoid the entry of compressed air into the storage container (10). The invention furthermore relates to a conveying system for a dry-bulk tanker and to a work train for working soils with a self-propelled ground working machine and a dry-bulk tanker.

A dry-bulk tanker for the provision of binding agents for soil stabilization for a spreading device comprises a storage container (10) for binding agent. A mechanical conveying device (18) for conveying binding agents from the storage container (10) into an intermediate chamber (20) is connected to the storage container (10). A pneumatic conveying device (36) for conveying the binding agent to the spreading device is connected to the intermediate chamber (20). A pressure relief device (40, 41) is connected to the mechanical conveying device in order to avoid the entry of compressed air into the storage container (10). The invention furthermore relates to a conveying system for a dry-bulk tanker and to a work train for working soils with a self-propelled ground working machine and a dry-bulk tanker.

Provided is a solvent borne dust suppressant or stabilization composition in a solvent which includes, a blend of an inorganic salt and a lignin-carbohydrate mixture, optionally with one or more of a surfactant and crosslinker, wherein the lignin-carbohydrate mixture may be a copolymer and may be present in an amount of 5 weight % to 50 weight % solids, wherein the lignin is a low average molecular weight lignin, the carbohydrate includes hemicellulose and wherein the lignin and hemicellulose are substantially derived from a non-wood source, a wood source or a blend thereof.

Provided is a solvent borne dust suppressant or stabilization composition in a solvent which includes, a blend of an inorganic salt and a lignin-carbohydrate mixture, optionally with one or more of a surfactant and crosslinker, wherein the lignin-carbohydrate mixture may be a copolymer and may be present in an amount of 5 weight % to 50 weight % solids, wherein the lignin is a low average molecular weight lignin, the carbohydrate includes hemicellulose and wherein the lignin and hemicellulose are substantially derived from a non-wood source, a wood source or a blend thereof.

An autonomous terrestrial compaction testing vehicle includes a compaction density meter coupled to the vehicle and a controller. The controller is communicatively connected to the compaction density meter and to a controller of a compactor machine that is compacting or has compacted an area of terrain. The controller is configured to autonomously control movement of the vehicle over the compacted area and control the compaction density meter to take a plurality of compaction density measurements at a plurality of locations of the compacted area.

An autonomous terrestrial compaction testing vehicle includes a compaction density meter coupled to the vehicle and a controller. The controller is communicatively connected to the compaction density meter and to a controller of a compactor machine that is compacting or has compacted an area of terrain. The controller is configured to autonomously control movement of the vehicle over the compacted area and control the compaction density meter to take a plurality of compaction density measurements at a plurality of locations of the compacted area.