OUR SERVICES

surface treatment

Surface treatment is a method for road maintenance and renovation, right up to paving construction - it is our all-rounder! There is almost nothing it cannot do! Because of its diverse combination options, such as multiple layers, double OB or OB with chippings, OB can serve a wide variety of applications and can therefore be used for a wide variety of customer requirements. The principle is usually similar. A new, very thin layer is applied to the existing road surface, the surface is sprayed with a binding agent and then sprinkled with aggregate. In Germany, broken natural stone is used for sprinkling. Particularly when light-colored types of stone are used, OB also serves as a reflective layer and thus inhibits the aging 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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impregnation

The impregnated macadam surface is a proven method for the cost-effective paving of roads. The existing unbound base layer is re-profiled and supplemented if necessary. This layer is then "impregnated" with fine chippings and bitumen emulsion and compacted. The optimal impregnated surface consists of three layers. The addition of polymers increases the durability and strength of the surface treatment. The binding agent adheres very quickly to both wet and dry rock. With a reduced amount of emulsion, water permeability can also be achieved.

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HGT sealing

Hydraulically bound base layers (HBT) are sealed for various reasons. The main aim is to prevent the HBT from drying out and to ensure that the surface is passable. In addition, the HBT sealing is carried out to seal the surface tightly, to ensure optimal hydraulic setting of the HGT and to prevent water from penetrating the structure. We offer the ideal bitumen emulsion for this as well as the complete construction service for sealing the HGT surfaces.

types of emulsions
spraying and sprinkling
C60B4-REP , C60BP4-REP , C67B3-REP , C69BP3-REP
production of surface treatments
C67B3-OB , C69BP3-OB-1
special emulsions
C65B4-OB , C65BP4-OB , C65BP4-REP
Post-treatment of base layers with hydraulic binders
C60B4-N

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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