Energy trading · Asphalt mixes

Bituminous asphalt mixes: the right binder for a road surface that lasts

An asphalt mix is only as good as its binder. E-Station supplies the road-grade bitumen that guarantees the durability of your asphalt mixes, with a certificate of analysis and delivery coordinated all the way to the site.

Request a quotation →

Asphalt combines aggregates and a bituminous binder to form the wearing and structural courses of a road. Its service life, its resistance to rutting and its ageing behaviour depend directly on the bitumen used. A poor binder, and cracks appear well before the expected lifespan—with maintenance costs that unbalance a project's entire budget.

E-Station comes in upstream of this equation, as the supplier of the road-grade bitumen that goes into the formulation. The objective remains that of its trading business as a whole: to deliver a compliant binder, at the right time, on terms set in advance.

Why the choice of binder determines the quality of the asphalt mix

Two visually identical asphalt mixes can behave in opposite ways depending on the bitumen grade selected. The binder governs stiffness in the heat, flexibility in the cold and resistance to fatigue under repeated traffic.

Resistance to rutting: under high heat and heavy traffic, a harder binder limits permanent deformation of the wearing course.
Cold-weather behaviour: in a temperate climate, a softer binder prevents thermal cracking.
Manufacturing consistency: a bitumen with stable characteristics from one batch to the next ensures a reproducible mix at the plant.
Proven traceability: the certificate of analysis accompanies every delivery, which secures public procurement requirements.

Which bitumen grade for which type of asphalt mix

The grade is matched to the destination climate and traffic intensity. E-Station guides this choice according to the actual use of the asphalt mix.

Wearing courses in hot climates

The 50/70 bitumen remains the reference for asphalt mixes intended for roads in West Africa and around the Mediterranean: a good compromise between heat resistance and workability at the plant.

Heavy-duty roads and industrial platforms

For high loads and intense heat, the bitumen 35/50 provides the stiffness that limits rutting on structural roads.

Roads in temperate climates

The bitumen 80/100 is suited to asphalt mixes laid in temperate to cool climates, where flexibility matters most. In doubt? The selection logic is detailed in the guide to choosing the grade according to climate and traffic.

From the asphalt plant to the site: binder logistics

Supplying an asphalt plant means having a binder available at the right pace, in packaging suited to the site's equipment. E-Station arbitrates between bulk, drums and big bags depending on volume and destination. For large export volumes, bulk remains the most economical where the unloading infrastructure allows; drums secure delivery to more remote sites.

For African projects, success depends on documentary control and the choice of Incoterm. E-Station coordinates delivery as part of its delivery logistics in Africa, in line with the incoterms et la documentation d’export expected at the destination port.

Quality control and binder compliance

Each batch intended for asphalt production relies on a documented quality control—backed by a certificate of analysis—and, where the contract provides for it, third-party inspection before loading. Compliance with the EN 12591 standard is thus enforceable proof, not a mere declaration.

Price, quotation and payment terms

The price of the bituminous binder tracks the barrel and logistics pressures: a quotation reflects the market at the time of the offer and remains valid for a specified period. Payment is made by bank transfer, with a 50% deposit on order and the balance on handover of the shipping documents. The letter of credit is reserved for reputable companies, after an initial deal of at least 500 M/T settled by bank transfer.

Hot, warm and cold asphalt mixes: the binder adapts

Depending on the laying technique, the binder is not stressed in the same way. Hot mixes, the most common on major road projects, require a bitumen whose viscosity remains controlled at mixing temperatures. Warm mixes, developed to reduce energy consumption and plant emissions, call for even stricter consistency of characteristics to offset the lower manufacturing temperature. Cold techniques, used for maintenance and reprofiling, rely more on binders in emulsion form.

In all cases, the final performance of the wearing course depends on a binder whose penetration and softening-point values are known and constant. That is what the supply of a standardised-grade bitumen secures, together with its certificate of analysis—the basis of a reliable asphalt mix formulation, whatever the technique chosen.

Frequently asked questions

Which bitumen grade for an asphalt mix in a hot climate?

The 50/70 dominates on roads in hot climates. The 35/50 is preferred on very heavy-traffic roads, for its better resistance to rutting.

Does E-Station manufacture asphalt mixes?

E-Station is an energy trader: it supplies the road-grade bitumen that goes into the formulation of asphalt mixes, not the finished mix. The quality of the binder directly determines that of the asphalt produced at the plant.

Is EN 12591 compliance guaranteed?

Yes, each delivery comes with a certificate of analysis attesting penetration and softening-point values compliant with the standard.

Need a binder for your asphalt mixes?

Specify the grade, the volume and the destination: the quotation comes back quickly, with detailed terms provided.