Tag Archives: road equipment

GlobeCore’s Road Building Units

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Road-building machines are used to:

  • lay an earth roadbed;
  • develop traffic interchanges and sidewalks; and
  • build traffic structures.

As usual, there are many different road building units on the hi-tech market, so it can be difficult to make the right choice.  That is why it is recommended to take into consideration the following criteria in order to choose equipment that meets all of your needs:

  • volumes, intensity and characteristics of road construction projects;
  • operating conditions; and
  • preventive and corrective maintenance requirements.

To get a better understanding of road building units, it it recommended to have a look at the followong statistics: The road density of France and Germany is 1800-1830 km per 1000 km2; Lithuania, Latvia, Estonia, Poland and India – 1070-1175 km2, the USA- 670 km2.

One of the primary tasks of highway engineering is to pave new roads and maintain the existing ones which are performed by road building units.  Preparation of high-quality road construction materials is also of great importance.

GlobeCore road construction units produce bitumen emulsion that is used as a binding material.

GlobeCore’s bitumen emulsion production unit UVB-1 and modified bitumen production unit UVB-2 are manufactured based on different designs.  These units may have an open or enclosed frame, different capacity and configuration to meet the customer’s needs.  GlobeCore units allow for production of  binders that meet the worldwide quality standards in the road construction industry.  As a result, the quality of road pavement is increased, the road construction season is extended, energy resources and financial expenditures are reduced, and hazardous waste is eliminated.

GlobeCore technology is a cost-effective way to build and repair roadways.

Equipment For Road Maintenance and Repairs

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The following is the list of the units, used to maintain and repair roads:

(1)    recyclers for asphalt concrete;

(2)     asphalt cold milling machines;

(3)     snow ploughs;

(4)    joint filling machines;

(5)     bush cutters;

(6)    sand-spreading machines; and

(7)     bitumen emulsion units;

The recyclers for asphalt concrete are meant for repairing potholes on roads made of mastic asphalt.  Additionally, the recyclers may be used to produce asphalt concrete and mixtures based on concrete or used to transport hot bitumen.

The asphalt cold milling machines reclaim asphalt pavement.  That means they remove the parts of the surface of the paved area to fill them with the new cement or asphalt concrete.

The snow plough is considered to be one of the most effective machines to clear the roads of snow and remove the snow accumulations along the roads.  Some designs of snow ploughs allow for loading snow into carrier vehicles.

The joint filling machines automatically apply the tack coat prior to the asphalt laying.

Sand-spreading machines are units that are mounted on tractors to spread bulky materials such as salt and sand.  These machines are applied to improve road safety during snow and ice storms.  The grass on the shoulders of roads or trees with a thickness of more than 80-100 mm may be cut by the special machines called “bush cutters.”

There are two types of equipment for bitumen emulsion production:

(1)    The GlobeCore UVB-1 line of units are designed for cationic and anionic bitumen emulsion production.  This construction material has gained a great popularity in the road construction industry and is used to construct and repair roads, waterproof  roofs, and eliminate dust on the pit roads.

(2)    The GlobeCore UVB-2 units are used for the modificartion of polymer bitumen.  The application of polymers for bitumen modification makes it possible to meet the needs of the road construction industry and improve every aspect of new road pavement.

Modified bitumen is widely applied when producing asphalt concrete with improved properties to increase the durability and rutting resistance of the road surface. Both bitumen emulsion units UVB-1 and UVB-2, are produced under the GlobeCore trademark.

Road Construction Equipment

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Today, scientific literature gives several alternative classifications to road construction equipment.  They are all based on two main criteria – the application area and the purpose of the equipment.

The following is one of the generally accepted and widespread classifications.

All road construction equipment includes:

  • machines for mining and processing rock material;
  • machines for production and transportation of concrete mixtures, bitumen and bitumen emulsions;
  • machines for road and aerodrome construction;
  • machines for compacting road construction material; and
  • machines for road maintenance and repair.

The machines for rock mining are applied to develop the deposits of the raw material for road surface construction.  This kind of equipment includes pneumatic drills, rock drilling machines, grinders, and mills.

Such units as (1) concrete mixing machines, (2) metering units, (3) containers, (4) additive production units, (5) ready-mix trucks, (6) bitumen storage tank, (7) transit bitumen carriers, and (8) bitumen spraying machines are considered to be the equipment for production and transportation of concrete mixtures, bitumen and bitumen emulsions.

In this class of equipment, special attention should be paid to the GlobeCore UVB-1 unit which is used to produce bitumen emulsions.  Bitumen emulsions are considered to be the most effective road construction material since it allows for significant energy and bitumen saving and is characterized by eco-friendliness and reliability.

Apart from the UVB-1 line of units, GlobeCore has also produced the UVB-2 units which are designed for the modification of polymer bitumen.  The properties of the asphalt concrete mixture are influenced by the properties of the modified bitumen as one of the most important components.

A non-exclusive list of machines for road and aerodrome construction include (1) pavement profilers; (2) concrete spreaders; (3) concrete pavers; (4) pavement finishing machines; (5) film-forming materials distributor; and (6) asphalt spreaders.

Roads and highways are maintained and repaired using such road construction equipment as street washers, street sweepers, marking machines, road heaters, and milling machines.  If it is impossible to perform a particular operation using the units listed above because of  their size, special mechanical hand tools can be applied.

Generally speaking, a hand-driven machine includes such main parts as (1) an engine; (2) a function-generating mechanism; and (3) a working body.  Such a mechanized tool is controlled by an operator.  This type of machine is small, convenient, serviceable, safe and efficient.

Bitumen Modification as a Way to Extend the Period Between Road Repairs

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Today, asphalt and concrete has been widely applied when paving roads and highways.  Recently, there have appeared a great number of potholes because of the increased number of heavy load-carrying vehicles.  Unfortunately, potholes occur all year round, but more intensively in spring.

In practical terms, road pavement failures are mainly treated in a frost-free season.  Delayed pothole treatment can result in the intensification of the road failure process: not only asphalt and concrete layers, but also pavement layers are destroyed.

All this has a negative impact on the service life of the road pavement and road traffic safety.  It is very troublesome to perform road construction works at low temperature since the road construction materials are characterized by poor adhesion to the road surface.  In such a way, application of cold asphalt concrete and emulsion mixtures will not be efficient when repairing road surfaces.

The statistics show that when applying the technologies described above, the road pavement will need repairing in a year because of the destruction in the junction of the road surface and road patch or defects of the road construction materials.

Cold asphalt concrete mixtures distinguish themselves through the following advantages:

(1)    Long-term storage;

(2)    Long-distance transportation; and

(3)    Road construction projects performed at low temperatures.

Due to the above listed characteristics, this construction material has gained a widespread acceptance in the road construction industry.  Many specialists agree on the point that modified asphalt concrete is a good alternative to hot or mastic asphalt.  Cold asphalt concrete mixtures haven’t enjoyed a wide popularity because of their poor physic and chemical performance characteristics.  High quality and timely repairs and long service life of road surfaces requires operation with liquid bitumen that most corresponds to the current conditions of roadway usage.  Such substances may be obtained by modifying bitumen by adding special substances that improve the durability and other characteristics of cold asphalt concrete.

Technically, bitumen can be effectively modified by the GlobeCore UBV-2 units.

This equipment includes:

(1)    two reactors;

(2)     colloid mill;

(3)     oil heating and bitumen supply blocks;

(4)     cabinet with a control panel;

(5)     polymer supply block;

(6)     controllable bitumen valves; heating system;

(7)     adhesive additive supply block;

(8)    plasticizer supply block; and

(9)    a platform to load polymer.

The UVB-2 modified bitumen units can be serviced either outside or inside an enclosed building with a balanced system of ventilation.

GlobeCore equipment provides for production of modified bitumen and polymer-bitumen binders that improve the quality of road construction projects and extend the period between road repairs.