BORNIT^® Joint Flex

status technical data sheet

31st March 2025

Areas of application

BORNIT^® Joint Flex^® is used to provide flexible and permanent seams upon application of asphalt mix lanes (“hot on cold” as well as “hot on hot”) as well as for seams between asphalt surfaces and construction materials with irregular surfaces (milling edges). Main area of application is the mechanical pre-treatment of the centre seam flanks when applying hot mixes.
For cut asphalt edges, using BORNIT^® Joint Tape is recommended!

Type and properties

BORNIT^® Joint Flex^® is a polymer-modified, solvent-free, stable bitumen compound, resistant to frost down to -5 °C. Using BORNIT^® Joint Flex^®, according to ZTV Asphalt StB 07, highly flexible and permanent seam connections are provided for seams in asphalt road construction. The product is manufactured ready-for-use and is usually applied mechanically with the processing equipment BORNIT^® Flexomat 3.1 and Joint Module or, for base and binding layers, with the Edge Module, resp. Layer thicknesses up to 4 mm can also be applied at vertical seam flanks without any problem.

Advantages

Surface

The substrate must be firm, clean and free from oil, grease and ice. Cutting and milling dust must be removed from the seam flanks. The product also adheres to slightly moist (not wet!) substrates. With the substrate being free from ice, processing is possible down to -5 °C.

Processing

BORNIT^® Joint Flex^® is particularly designed for machine processing, but can also be applied with other suitable equipment as well as brush or spatula.
The especially developed processing equipment BORNIT^® Flexomat 3.1 (basic unit) as well as the associated add-on modules (Joint Module, Edge Module) enable fast and economic material application for all seam areas in asphalt road construction. Thus, seam treatment over the entire surface with approx. 1,000 m per hour is possible without any problem.
Depending on the application speed (advance) and valve position at the equipment, the material layer thickness to be applied can be varied.
Please request the technical documents for the versatile and easy-to-handle equipment system BORNIT^® Flexomat 3.1 separately!
Application of the hot asphalt mix should take place immediately following the application of BORNIT^® Joint Flex^®. Following application, the seam flank should not be exposed to traffic anymore.

Consumption

approx. 0.052 ltr. per linear metre per cm of layer thickness
According to ZTV Asphalt StB 07, the required material quantity for the seam treatment is at least 50 g per cm of layer thickness per linear metre of seam flank.
For a 4 cm top layer, a 25 litre bucket is sufficient for approx. 120 running metres.

Layer thickness control

According to ZTV Asphalt StB 07, application of the required material quantity of at least 50 g per cm of layer thickness per linear metre of seam flank in one go (stable up to 4 mm layer thickness)

Product type

polymer-modified bitumen compound

Base

polymers, bitumen emulsion

Solvent

none

Density at +20 °C

approx. 0.96 g/cm³

PH-value

11.0 - 11.5

Consistency

viscous, thixotropic

colour(s)

black

Application

Brush, spatula, BORNIT^® Flexomat 3.1 and Joint Module or Edge Module, resp.

Processing temperature (ambient and substrate)

not below +2 °C

Cleaning

in the fresh state with water, in the hardened state with BORNIT^® MultiClean Spray or BORNIT^® MultiClean

storage

not below +2 °C

Shelf life

in originally sealed containers storable for 12 months

GISCODE

BBP10

GISCODE link comp. A

https://www.wingisonline.de/showbetrandoc.aspx?gisbaunr=4/00000018210/000009&docid=1995&lang=de

Substances hazardous to health in terms of the ordinance on hazardous materials

none

Hazard class according to ADR

none

Boiling start and Boiling range

+100 °C

Fracture strain (at the free material film)

370 % (test certificate MPA Dresden)

Health and fire protection, occupational safety

To ensure safe handling of the product, the physical, safety, toxicological and ecological information provided online, the information in the current safety data sheet and the additional information on the label must be read and followed before purchasing or using the product! The applicable regulations, ordinances and laws must be complied with.

In case of doubt, please contact the BORNIT^® application technology department or the BORNIT^® service hotline on +49 375 2795 123.

Storage

In originally sealed containers storable for 12 months. Always close opened containers. Storable down to -5 °C.

Disposal note

Only recycle completely empty containers. Material residues can be disposed of according to AVV-ASN: 080410 (adhesive and sealing compound residues, except for those falling under 080409).

Note

The above information replaces all previous technical information about the product. Thus, this information is no longer valid. The details have been compiled according to the latest state of application technology. Please observe, however, that, depending on the state of the construction object, deviations from the method of application suggested in the datasheet may be required. Unless agreed otherwise in individual contracts, any information contained in the datasheet shall be non-binding and thus does not represent an agreed product constitution. We reserve the right to any changes in the information contained in this datasheet anytime.

GISCODE

BBP10

Hazard-determining components for labelling

1,2-Benzisothiazol-3(2H)-on

EUH-records

EUH208: Contains 1,2-Benzisothiazol-3(2H)-on. May produce an allergic reaction.

Recommended, personal protective equipment: