Bitumen emulsifiers

CECA is one of the world’s leading producers of bitumen emulsifiers. CECA supplies the most comprehensive range on the market to help you produce spray and mixing grade emulsions.

 

To assist you in selecting the right emulsifier, CECA provides unique customized technical support based on formulation studies to recommend the right additive and dosage. CECA also proposes a wide range of bitumen additives for each type of application.

Emulsion properties

The emulsion type needs to be selected depending on various criteria :

  • Application: spray or mixing
  • Type of bitumen: pure, modified, fluxed
  • Aggregates: limestone, siliceous
  • Support nature: lower layer
  • Pavement profile
  • Construction season
  • Traffic opening time

 

The different criteria enumerated above are very important to find the right emulsifier and additive. The breaking time depends on the choice of application and dosage of emulsifier (rapid, slow and semi-rapid settings).

Emulsion application

Spray grade

An operation which consists of applying the binder evenly on the pavement or the aggregates. This technique is very easy to use and allows quick return of traffic.

The applications corresponding to this technique are tack coat, prime coat, surface dressing and penetration macadam.

 

Mixing grade

An operation which consists of covering an aggregate with a thin film of binder. Bituminous mixes are coated in a special plant or, more rarely, in a concrete mixer.

The applications corresponding to this technique are storable cold mix, recycling, grave-emulsion, slurry seal and micro surfacing.

 

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Spray grade bitumen emulsifiers

Surface dressing

Surface dressing, based on “cold binder” cationic bitumen emulsion, helps bond the chips on the support while sealing the road surface against water ingression.

 

This application is used as a wearing course for new pavement but also for maintenance and water-proofing.

 

Our surface dressing agents:

Prime coat

Prime coat is an introduction of hydrocarbon binder into a previously compacted non-stabilized pavement layer. Its role is to stabilize the surface aggregates of the compacted layer, to water-proof, to strengthen the cohesion and to prepare the lower layer for the wearing course application.

 

Our prime coat range:

Penetration

The penetration application is the insertion of a binder into a layer of macadam stones previously interlocked by rolling to create an adhesive film. Subsequently, aggregates are spread to fill the voids between the binder and the aggregates and alternate with several layers of bitumen emulsion. This technique is used for new pavements, mostly base courses but it is also suitable for renovating old pavements thanks to its ability to stabilize an untreated course.

 

Our range for penetration:

Tack coat

Tack coats based on cationic bitumen emulsion are used primarily when applying a new layer of coated material for the maintenance or repair of an existing road surface.

Their role is to prevent the various layers from sliding over each other within the structure and to form a single mass that will enhance the structure’s sustainability.

Moreover, their use in new pavements helps to avoid failure due to slippage and distortion which significantly increases their life time by several years.

 

 Our tack coat range:

 

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Mixing grade bitumen emulsifiers

Storable cold mix

This application is a cold mix which can be stored for several weeks, its production is similar to cold mixes but the formulation proportions are different. Storable open graded cold mix is used in maintenance to patch up potholes and similar localized damages from weathering and traffic.

 

Our storable cold mix range:

Grave-emulsion

The grave-emulsion is a coating technique wherein coarse aggregates are coated to a greater or lesser degree in a binder-rich mastic. In construction, the grave-emulsion is used as a base course and a binder course for low to medium traffic. It can be laid using a finisher or a grader. In this case, the aggregate emulsion can be used for reprofiling, reshaping and widening.

 

Our range for grave-emulsion :

Slurry seal and microsurfacing

Slurry seal and microsurfacing are used as thin wearing courses to restore the surface roughness of damaged roads. They can also be used as a new course on grave-emulsion or as surface dressings. They consist of aggregates with a very specific particle size, bitumen emulsion, water, cement, and, in some cases, a breaking-control additive. This technique is one of the most complex techniques in the paving industry. Our experts will help you find the right formulation among all the components.

 

Our range for slurry seal and microsurfacing:

Recycling

There are two options to use recycled aggregates. The first one is done directly on-the-spot with heavy equipment, the asphalt is prepared as a cold mix after being fragmented. The second one is done in the plant as a grave emulsion. It is done for pavement maintenance when overlaying is not a viable option. In order to adapt to every possibility, CECA provides a flexible emulsifier.

 

Our range for recycling:

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