No asphalt without bitumen
roxit provides bitumen for road construction companies that are looking for more than just material, but also expect reliability, quality and security of supply. To understand why our solutions work, it is important to know the key binding agent in road construction: bitumen.
The properties of bitumen in road construction
Bitumen is a building material refined from crude oil. It is used in the production of asphalt and polymer-modified bitumen (PMB). As a binding agent, it ensures the bonding of mineral materials such as stone, gravel and filler – the main components of asphalt that are decisive in determining its load-bearing capacity. From motorways, country roads and municipal roads to heavily trafficked surfaces such as airports, container terminals or race tracks – bitumen is essential for creating durable and resilient structures. Road bitumen produced in accordance with recipes that comply with the relevant standards provides the backbone for long-lasting asphalt constructions.
Advantages of bitumen and polymer-modified bitumen
Bitumen offers a range of properties that are essential for long-lasting infrastructure: reliable temperature performance, strong adhesion between mineral components, high frost resistance and robust durability. As a result, asphalt surfaces remain structurally stable over time and are less prone to damage. Polymer-modified bitumen (PMB) is used wherever traffic surfaces have to withstand high axle loads and gravitational forces, such as on motorways, roundabouts or industrial areas. The addition of polymers provides higher elasticity and resistance compared to conventional bitumen. For clients, this means less deformation, greater stability and a longer service life.
Production of polymer-modified bitumen in our own plants
We produce polymer-modified bitumen in our own plants. This allows precise control of formulations, consistently high product quality and reliable availability, even for large infrastructure projects. Because we control the entire production process directly, we at roxit can tailor PMB exactly to the requirements of the respective asphalt mix and respond flexibly to project-specific needs. For construction companies, this means maximum performance, a high level of supply reliability and optimal coordination between bitumen, polymers and the subsequent final mix.
Bitumen solutions for demanding road construction and infrastructure projects
Clients typically turn to us when they have experienced quality or performance issues in previous projects or when specific requirements arise that cannot be met with conventional products. Typical reasons include:-
1. Asphalt performance issues
“The asphalt does not perform as it should.”
- Rutting
- Cracking due to low temperatures or fatigue
- Insufficient stability in highly stressed areas
- Uneven binder distribution
- Issues with high RAP (reclaimed asphalt pavement) content
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2. Difficulties during production or application
“The mix is difficult to process, inefficient or error-prone.”
- Insufficient stability of the mortar
- Bitumen drainage in SMA
- Poor compactability
- Excessively high processing temperatures required
- Build-up on rollers, lorries or pavers
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3. Incorrect material selection or unsuitable products
“The previous provider only supplies products, but not a complete solution.”
- Incorrect polymer selection
- Unsuitable fibres
- Inferior adhesives
- Ineffective or incompatible additives
- Lack of consulting for pigment or special binder projects
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4. Quality or supply issues with other providers
“The previous provider is unreliable.”
- Significant variations in product quality
- Unreliable or late deliveries
- Lack of technical support
- Unclear or incomplete documentation
- Poor handling of complaints
Many clients report issues such as unstable products that differ from one delivery to the next, a lack of technical advice, unreliable delivery schedules, exaggerated promises, products that perform well in the laboratory but not in real-world applications, insufficient support with technical questions or complaints and suppliers who only sell products rather than providing solutions.
Clients turn to us when a project becomes more demanding due to tender requirements, the amount of RAP content needs to be increased, special performance requirements arise (such as for airports, motorways, or industrial areas), the previous provider has failed (quality, delivery times, support) or where an independent technical solution or second opinion is needed.
Our focus: the success of your road construction projects
We not only supply products, but also technical solutions. Our focus concentrates on four key areas: technical performance, reliable application processes, planning reliability and the early prevention of typical errors.
1. Technical performance we ensure for you
- Correct selection of fibres, waxes, natural asphalt, SBS, rejuvenators
- Optimisation of mortar structure, stability, temperature resistance
2. Process and application problems we solve for you
- Use of release agents, warm-mix solutions, bonding agents
- Support with mix design concepts
3. Planning reliability we create for you
- Reliable supply chains
- Consistent product availability
- Technical support before, during and after the project
4. Forward-thinking approach to avoid errors
- Laboratory testing, material recommendations, mix optimisation
- Advice for tenders
- Support with special requirements (e.g. coloured asphalt)
Target groups in bitumen trading, PMB and additives
Our bitumen, additives and speciality products are mainly used in asphalt mixing plants, PMB production facilities and emulsion plants. In the lime and filler segment, mixing plants and emulsion plants also represent key client groups. The production and sale of PMB, on the other hand, is aimed at road construction companies that must meet the technical requirements of clients such as Autobahn GmbH, ASFINAG or the regional authorities during application.
Central requirements for roxit bitumen:
- Projects with high recycling content → use of RAP rejuvenators
- Situations with long transport distances or low processing temperatures → FT waxes, bonding agents, mortar stabilisers (cellulose)
- High traffic and shear stress → natural asphalts, PMB (SBS/ styrene-butadiene-styrene), fibres
- Design or safety requirements → colour pigments + transparent binder
- Use of machinery and equipment during application → release agent to prevent adhesion
Reference projects
Our bitumen logistics operations have been supplying a wide range of major infrastructure projects for many years. In Germany, these include the A8 Enztal crossing, the A3, A4, A20, A59 and A61 motorways, as well as challenging special projects such as the Nürburgring race track and Frankfurt Airport. In Austria, we also supply important transport hubs such as Salzburg and Innsbruck airports, as well as several motorway projects.
Specialist for challenging projects
With roxit bitumen, we have successfully resolved complex special cases where others have failed. Selected example projects:
| The challenge | Solution |
|---|---|
| Ruts in roundabouts | Natural asphalt + PMB + fibres |
| High RAP content requirements | Rejuvenator concept + process support |
| Warm mix | FT wax systems with process optimisation |
| Coloured asphalt | Pigments + transparent binder |
| Mortar issues | Cellulose optimisation |
| Layer adhesion | Coordinated adhesive systems |
We provide technical support for your construction project before, during and after execution. We are also happy to provide early-stage consulting for tenders and support for special applications (e.g. coloured asphalt). Through laboratory testing, material recommendations and mix optimisation, we help you prevent errors in the construction process before they even occur.
Flexible supply routes and reduced dependency
roxit supplies bitumen, as well as all relevant asphalt additives, supplementary products and services from a single source to more than a dozen countries (Germany, Austria, Poland, the Czech Republic, Slovakia, Hungary, Romania, Belgium, Bulgaria, Croatia, Luxembourg, the Netherlands, Denmark, North Macedonia, Montenegro, Bosnia and Herzegovina, Serbia, Slovenia). We – and so do our clients – benefit from flexible supply routes by road and rail, and from a low level of dependence on manufacturers. Thanks to our broad portfolio of suppliers and our status as a preferred customer with most of them, our supply chains are particularly stable, which minimises the risk of disruptions in the event of bottlenecks.
We check country-specific requirements for you
Depending on the location, country-specific requirements, logistical conditions or varying technical standards may apply. For this reason, we are happy to verify the exact availability of roxit bitumen for a specific project or region within the countries listed above.
European certification guaranteed
Our products are sourced exclusively from certified European production facilities with verifiable consistent quality (CE, EN standards, plant certifications, PMB conformity, laboratory plausibility procedures). In concrete terms, this means
- Use of tested polymers, natural asphalts, fibres and binders
- Documented batch quality
- Technical test reports available on request
- CO2-free bitumen available (Gold Standard-certified)
Thanks to an extensive national and international network of suppliers and logistics partners, combined with high procurement volumes, we are able to offer attractive, competitive pricing without compromising on advice or quality – even in urgent situations where there is an acute need for action on the construction site.
Sustainability in purchasing, production and additives
When purchasing bitumen, we work with partners who supply CO2-neutral bitumen and provide corresponding CO2 certificates for defined purchase volumes. Our PMB production operates under a certified energy management system in accordance with EN 50001, which systematically reduces energy consumption and emissions. In the area of additives and specialty products, we focus on EDPs, warm mix technologies, RAP optimisation and regional supply chains in order to reduce CO2 emissions, use resources efficiently and construct long-lasting asphalt surfaces.
Purchase road bitumen with reliable delivery and straightforward processes
Roxit clients benefit from a reliable supply chain that makes construction projects plannable and stress-free. Orders are processed quickly, transparently and without unnecessary complexities, ensuring that materials are delivered when and where they are needed. This reduces downtime, streamlines operations and keeps construction sites and production processes running smoothly. Client satisfaction is our top priority. That is why we go the extra mile to accommodate orders, special requests and last-minute requirements. Our goal is not only to deliver products, but also to identify challenges early on and offer solutions. As a result, our clients have the confidence of knowing that they can rely on us at all times.
Looking for complete bitumen solutions from a single source?
We supply complete road bitumen solutions designed to simplify your processes and keep your projects running smoothly. Talk to us about your next road construction project.
Get advice nowFAQ/frequently asked questions about road bitumen
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What is bitumen and what is road bitumen used for?
Bitumen is a binding agent for asphalt and is used in road construction for base, binder and surface layers. Road bitumen in accordance with DIN EN 12591 forms the basis for durable asphalt constructions. Depending on project requirements, liquid bitumen, cold bitumen, polymer-modified bitumen (PMB) or binders may be used as well, for example for decorative or coloured asphalt surfaces.
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Where can I purchase bitumen and what types of bitumen are available?
You can purchase bitumen directly from roxit. We offer the complete range of road bitumen, PMB, liquid bitumen, cold bitumen, Dekobit, natural asphalt and coloured binders. We deliver throughout Europe (Germany, Austria, Poland, Czech Republic, Slovakia, Hungary, Romania, Belgium, Bulgaria, Croatia, Luxembourg, Netherlands, Denmark, North Macedonia, Montenegro, Bosnia and Herzegovina, Serbia, Slovenia) and have our own hazardous goods logistics. We also provide comprehensive consultation and develop customised solutions for challenges encountered on your construction site.
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What is polymer-modified bitumen (PMB) and when is it used?
PMB contains polymers such as SBS, which enhance the material’s elasticity, cohesion and resistance to temperature fluctuations. It is used in areas exposed to heavy loads: motorways, roundabouts, industrial areas. Production takes place in our own facilities in accordance with TL PMB. PMB improves asphalt performance, prevents rutting and extends service life.
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What standards apply to bitumen and asphalt in road construction?
The following standards and regulations, among others, apply in road construction:
- DIN EN 12591: properties and testing methods for road bitumen
- TL Asphalt-StB: technical regulations for asphalt
- ZTV Asphalt-StB: additional technical contract conditions
- TL PmB: technical regulations for polymer-modified bitumen
- DIN 18533: waterproofing of structural elements in contact with the ground against soil moisture, water and splash water
These standards define quality, processing and requirements for bitumen, PMB and
asphalt mixes. -
What is liquid bitumen and what is it used for?
Liquid bitumen is bitumen that has been made workable through the addition of additives or solvents. It is used for surface treatments, tack coats, repair work and specialised applications. Cold bitumen is applied cold, which is ideal for small-scale repairs or emergency applications.
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Which asphalt additives improve asphalt performance?
A wide range of asphalt additives is available to specifically improve the properties of asphalt:
- Fibres (cellulose fibres, fibre granulate) for bitumen stabilisation, particularly for SMA
- Bonding agent / adhesion promoter to improve layer adhesion
- Warm mix additives (FT wax, asphalt waxes) to reduce mixing and compacting temperatures
- Rejuvenators for restoring old asphalt (RAP)
- Pigments for coloured asphalt
- High-modulus additives for highly stressed surfaces
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How can asphalt mix temperatures and emissions be reduced?
Warm mix asphalt additives such as FT wax, organic waxes or specialised chemical additives can reduce asphalt temperatures by 20-40 °C. This reduces emissions, saves energy and improves workability. This lowers emissions, saves energy and improves workability. Warm mix asphalt is widely used in Germany and Austria.
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How is adhesion between bitumen and rock improved?
Bonding agents or adhesion promoters significantly improve layer adhesion and reduce water sensitivity. They are dosed in the asphalt mixing plant and are essential for durable asphalt constructions, when using high recycled content or sensitive types of aggregate.
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Which additives are suitable for asphalt recycling and high RAP contents?
Rejuvenators are used for asphalt containing high contents of reclaimed asphalt pavement (RAP). These rejuvenators restore elasticity to aged bitumen and improve workability. As a result, high RAP contents can be incorporated into new asphalt without compromising performance.
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How are coloured or decorative asphalt surfaces created?
Colour pigments, colourless binders, Dekobit or transparent binders are used for coloured asphalt applications. These materials enable the creation of red cycle paths and bus lanes, light-coloured asphalt surfaces, decorative pavements or coloured industrial surfaces. Pigments and binders from roxit are available throughout Europe.