Jointing, repair and surface treatment
Concrete or asphalt? We’ll ensure a perfect result

A dedicated department within ÖBA specialises in joint, repair and surface technology (FIO). Every year, in our road construction work, we seal joints which – if laid end to end – would stretch for around 1,000,000 metres, and we replace approximately 10,000 m² of concrete surfacing with rapid-setting concrete.

Areas

Photo: close-up of a coarse gravel road in a dark tunnel; in the background, the headlights of construction vehicles — Roads with epoxy surfaces provide increased safety.
© PORR

Range of Services

Surface protection coatings with EP-Grip

To improve the skid resistance of a road surface, we apply a protective layer of epoxy resin (EP) and a special hard aggregate to its surface. The colour of the special aggregate makes the road surface lighter, thereby enhancing safety in two ways – particularly in tunnels.

Photo: newly constructed motorway section with visible joints, which are filled with a black mass; in the background, construction vehicles and workers; vehicle traffic at right and left — Predetermined breaking points and elastic filling material prevent the formation of cracks in asphalt and concrete.
© PORR

Range of Services

Joints in asphalt and concrete

Well-executed joints and high-quality filling material significantly extend the service life of roads and thus help to maintain the value of the infrastructure.

Photo: close-up of a concrete slab in which a predetermined breaking point was cut and then sealed with black filling material — Among other things, filling material prevents the ingress of water, and thus frost damage to the roadway.
© PORR

Range of Services

Joint sealing with hot-pouring compound, cold-pouring compound & joint profiles

On asphalt and concrete surfaces, sealing the joints with the correct filler prevents frost damage and corrosion on concrete surfaces.

Photo: close-up of a concrete surface in which narrow grooves were cut; in the background, a ruler with millimetre scale — Precision grinding work ensures that roadways have more grip and are quieter.
© PORR

Range of Services

Grinding

Grinding involves sanding down uneven areas on a surface or cutting patterns into it. The process improves the grip of the surface whilst reducing noise levels.

Photo: close-up of a road surface into which grooves were cut; in the background, construction machine parts — Grooves cut in the flow direction facilitate the drainage of surface water from roadways.
© PORR

Range of Services

Grooving

To ensure that surface water drains away quickly from the road surface, grooves are cut into the road surface during grooving. Aligned in the direction of travel, they reduce noise levels.

Photo: In an open area laid with concrete tiles, a work tool cuts seven even grooves. — The guiding systems for the blind are manufactured according to strict legal standards.
© PORR

Range of Services

Guidance systems for the blind

Tactile guidance systems milled into existing surfaces ensure accessibility on railway platforms, pavements and other heavily used pedestrian areas.

Photo: three workers with a measurement device and construction machine at the edge of a roundabout — Special equipment allows for efficient and sustainable renovation of joints.
© PORR

Range of Services

Joint repair

If the elastic joint filler becomes leaky due to weathering, it must be carefully removed and replaced.

Photo: asphalted rural road surrounded by woods and meadows; in the middle, a worker with construction machinery; in the background, more machinery surrounded by white steam — The selective repair of cracks means that roads can be renovated economically.
© PORR

Range of Services

Rehabilitation of cracks in concrete and asphalt surfaces

Cracks in concrete and asphalt do not necessarily mean that a road needs to be completely resurfaced. Often, it can be repaired in specific areas. This helps to avoid high costs. To do this, the cracks are first cut open cleanly and sealed with joint sealing material; broken concrete surfaces are also anchored and dowelled.

Photo: five workers at a roundabout that is closed to traffic with various tools at work — In order to hinder traffic as little as possible, quick-setting material is used for the renovation of concrete surfaces.
© PORR

Range of Services

Concrete slab renovation

Concrete spalling usually manifests itself as damage to the edges of concrete slabs. Damaged slabs can be repaired quickly and efficiently using fast-setting repair mortar.

Photo: A worker applies fresh asphalt in a cut joint with a spatula. — Damaged patches in the asphalt are carefully removed and newly filled.
© PORR

Range of Services

Rehabilitation of potholes in asphalt

When performing rehabilitation of potholes in asphalt, the damaged surface is chiselled out, cut away and filled with special rehabilitation asphalt.

Photo: night shot of a construction site with a partially applied concrete layer, numerous workers and a large construction machine with floodlights enveloping the building site in bright light — The newly paved concrete surface can already be used by 40 tonne trucks after a curing period of just two to six hours.
© PORR

Range of Services

Rapid-setting concrete in road construction

It is not only asphalt but also concrete that can be laid quickly in road construction. ÖBA uses fast-setting concrete with setting times of two to six hours, enabling it to lay concrete surfaces of up to 300 m² in a single night shift.

Photo: construction vehicle and a worker at a clearly visible transition between a concrete and an asphalt surface, making adjustments to a construction machine — Supporting ribs made from special mortar prevent the edges from breaking in the transition between asphalt and concrete.
© PORR

Range of Services

Support ribs

Particular stress is placed on those sections of the road where the asphalt surface meets the concrete surface, as well as at the junctions in road transition structures, known as expansion joints. We reinforce these weak points in the asphalt using support ribs made of special mortar.

Photo: worker on the control panel of a machine on an airfield; in the background, airport staff and a Boeing 747 — In-pavement lights are used to form navigational lighting systems at airports.
© PORR

Range of Services

Underfloor heating

Ground-level lights, or ‘surface lights’, can be found on runways, taxiways as well as on aprons at airfields. They are installed almost flush with the ground and serve as an important navigational aid for pilots when manoeuvring on the ground.