New road construction

Every road leads to a different destination

What are the most important criteria to be considered? What methods need to be applied? What machines used?

In developing and emerging countries, the primary concern is to build the basic infrastructure. Regardless of whether made of asphalt or concrete, when constructing new roads it’s important to produce a well-integrated pavement structure – from a stable base layer to a level and true-to-profile surface. Which applications are common in new road construction?

Typical new road construction applications include the construction of base layers and frost protection layers, asphalt production, asphalt paving, asphalt compaction, reduced-temperature asphalts, new racetrack construction, as well as inset and offset concrete paving.

Construction of base layers

The base layer of a road lays the foundation for the upper pavement structure. It must offer excellent bearing capacity, be capable of withstanding a broad range of different climatic conditions, and remain functional over several decades. What materials are used for the construction of base layers? What properties do they need to possess?

To the application
Frost Protection Layer

The frost protection layer prevents water from rising into the road body – thus preventing frost damage to the superstructure. To this end, rock is crushed and sieved into graded aggregates, which are then laid and compacted.

To the application
Asphalt production

A thermal mixing process is required to turn aggregates and bitumen into asphalt for road construction purposes. An asphalt mixing plant is therefore indispensable.

To the application
Asphalt paving

Asphalt paving requires an exceptionally high degree of meticulous logistical planning and management. Care needs to be taken that sufficient quantities of mix are available on site all the time, and that the mix will not cool down prematurely. What types of machines are used for asphalt paving? What is the sequence of operations?

To the application
Asphalt compaction

Compaction is the final procedure in road construction, its goal being to produce a surface texture of high quality. What aspects need to be considered in asphalt compaction? When compacting an asphalt road, what impact will the road’s location or ambient temperatures have on the compacting operation?

To the application
Reduced-temperature asphalts

nergy-saving potential is one of the key drivers, and reduced-temperature asphalt is a road construction material that is currently becoming increasingly popular as a result. Technologies and solutions from the Wirtgen Group are the perfect response to this trend – and help ensure that the production and processing of lower-temperature mixes can be carried out virtually in the conventional manner.

To the application
New racetrack construction

Racetracks’ longitudinal slope is regulated in relation to the speed. For example, the starting straight is not permitted to have a slope of more than 2%. To facilitate drainage, the cross slope should be between 1.5% and 3%. The curves are not allowed to be banked at an incline of more than 10%. Above all else, racetracks are designed so that drivers are met with challenging circuits where they can fully exploit their own and their cars’ potential.

To the application
Inset concrete paving

Concrete is a particularly durable material and eminently suitable for roads which have to withstand high loads. Slipform paving is a standard method that is primarily used to pave large roads and runways using inset technology.

To the application
Offset concrete paving

Instead of placing pre-fabricated concrete parts in a manual operation, the required profiles can also be produced by slipform pavers in offset application. What applications can offset concrete paving be used for? What are the advantages of slipform paving when compared to manual construction?

To the application
Road rehabilitation
To overview