OUR SERVICES

surface treatment

Surface treatment (OB) is a method for road maintenance and rehabilitation, right through to pavement construction - making it our all-rounder, so to speak! There is almost nothing it can't do! Thanks to its many possible combinations, such as multiple layers, double OB or OB with chippings, OB can be used for a wide range of applications and can therefore be utilised for a variety of customer requirements. The principle is generally similar. A new, very thin layer is applied to the existing road surface, the surface is sprayed with a binding agent and then gritted with an aggregate. In Germany, crushed natural stone is used for gritting. Particularly when using light-coloured types of stone, the OB also serves as a reflective layer and thus inhibits the ageing of the underlying asphalt layers, as the temperature load can be reduced by up to 7 degrees.

Einfache OB

A simple surface treatment (OB) in road construction is a measure for repairing and maintaining roads. A new, very thin layer is applied to the surface of an existing road. This process is also suitable for the interim construction of roads. It is characterized by efficiency and cost-effectiveness and is often used on country, district and municipal connecting roads and farm roads.

Pre-cleaning: The substrate is cleaned to ensure perfect contact between the binder and the substrate.
Application of the binding agent: The binding agent is sprayed onto the substrate from a low height using ramp sprayers.
Chipping: Fine chippings are applied to the surface.
Rolling : The applied aggregate is rolled in to increase the adhesion between the individual grains and the binder.
Sweeping: This is done after about 4-7 days using a sweeper
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Double chippings

A double chippings surface treatment (OB-dA) is a special type of surface treatment (OB) used for road repair and maintenance. It involves treating the road in two layers to achieve improved durability and grip.

Pre-cleaning: The surface is cleaned to ensure optimal adhesion between the binder and the substrate.
First layer: The binding agent is applied to the cleaned surface, followed by a layer of fine chippings with a coarser grain.
Second layer: A second layer of fine chippings with a smaller grain size than the first layer is then applied.
Rolling: The applied aggregate is rolled in to increase the adhesion between the individual grains and the binder.
Sweeping: This is done after about 10-15 days using a sweeper
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Double surface treatment

Double surfacing (dOB) is a method of repairing, maintaining and substantially strengthening roads by applying two layers of binder and chippings. This technique provides improved durability and grip of the road surface.

Pre-cleaning: The surface is cleaned to ensure optimal adhesion between the binder and the substrate.
First layer: The binder is applied to the cleaned surface, followed by a layer of fine chippings. This layer is then compacted with a roller.
Second layer: Another layer of binder is applied to the first layer, followed by a second layer of fine chippings. This layer is also compacted to ensure the best possible adhesion.
Rolling: The applied aggregate is rolled in to increase the adhesion between the individual grains and the binder. This can be done after the second layer or already after the first layer.
Sweeping: This is done after about 10-15 days using a sweeper
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Double surface treatment with submitted
scattering

A pre-spreading is usually carried out when the substrate is not ideal for the adhesion of the binding agent. As the name suggests, a pre-spreading using grit is carried out. This is followed by a simple OB, an OB with double grit spreading or a double OB, depending on the customer's wishes. Our paving trains can spray, split and pre-compact using an integrated pressure roller in one operation. This enables us to work efficiently and, above all, with consistently high quality.

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Penetration macadam surface

The penetration macadam surface is a proven method for cost-effective road surfacing. In this process, the existing unbound base course is reprofiled and, if necessary, supplemented. This layer is then "penetrated" and compacted with high-quality chippings and bitumen emulsion. The optimal penetration macadam surface consists of three layers. The addition of polymers increases the durability and strength of the surface treatment. The binder adheres very quickly to both wet and dry aggregates. Additionally, water permeability can be achieved by reducing the amount of emulsion used.

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Emulsions

We produce almost all types of bitumen emulsions and process them with our own machines as a complete or in-house service. Our bitumen emulsions are also available in service tanks, combi patchers, barrels and small containers. A bitumen emulsion is a mixture of bitumen, water and various emulsifiers. Both road construction bitumen and polymer-modified bitumen can be used to produce it. Depending on the type of bitumen emulsion, the proportion of bitumen can be between 40 and 70 percent.

Bitumen emulsions are one of the most widely used raw materials in road maintenance because they offer many advantages. The most important ones include:
No risk of burns or fire
No risk of explosion due to solvent vapors
Only release water when setting
Do not penetrate the soil
Are processed “cold” and therefore save energy
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We would be happy to advise you on which bitumen emulsion is suitable for which substrate, which road conditions and which weather conditions.
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