BORNIT^® Cold Joint Sealant

status technical data sheet

1st December 2020

Areas of application

BORNIT^® Cold Joint Sealant is used for sealing vertical or inclined joints in concrete traffic areas and cut asphalt surfaces. BORNIT^® Cold Joint Sealant reliably seals joints against the penetration of water pollutants into the ground. In particular, it is suitable for sealing joints in road, bridge and tunnel construction as well as in the basement and base area.
BORNIT^® Cold Joint Sealant is suitable for sealing floor or ground-level joints between concrete elements as well as concrete components and asphalt surfaces subject mechanical stresses (vehicle and pedestrian traffic), chemical stresses from de-icing salts and temperature-dependent movements of the components. Upon use in concrete surfaces, BORNIT^® Cold Joint Sealant can also be subjected to chemical stresses from fuels.
Horizontal joints with an inclination of less than 3 % should be sealed with the self-levelling BORNIT^® Cold Sealing Compound. The joint sealant must not be used for joints, which are permanently under the surface of liquids (e.g. in swimming pools, clarification tanks) or are exposed to strongly oxidising acids and bases, as well as for joints in facilities for storing, filling and transhipping of water pollutants (called LAU plants) and for glass sealing.

Type and properties

BORNIT^® Cold Joint Sealant is an elastic, stable, two-component, polysulphide-based joint sealant for joints with an elasticity of up to 35 % of the joint width. In the hardened state, BORNIT^® Cold Joint Sealant results in elastic joint sealing with very good weather and ageing resistance and high mechanical strength. BORNIT^® Cold Joint Sealant corresponds to DIN EN 14188-2.

Advantages

Surface

The joint flanks must be clean, dry, firm, and free of grease and dust. Asphalt flanks must be freshly cut. The joint widths must be matched to the expected movement

Processing

The bonding surfaces of the joints to be sealed must be cleaned from dirt, dust, greases, oils, bitumen and loose particles. For the correct depth, and in order to avoid adhesion on three surfaces, the joints are clamped and backfilled with foamed PE-based round material (closed-cell round PE profile) (BORNIT^® Round Cord). Should this not be possible, the joint base must be covered with a separating material (PE sheet, silicone paper or the like).
Subsequently, for concrete joints, thoroughly mixed BORNIT^® Concrete Primer must be uniformly applied to the dry fusion faces. After a flash-off time of 0.5-2 hours (depending on the temperature, the primer should not be completely dry), BORNIT^® Cold Joint Sealant can be inserted. The BORNIT^® Concrete Primer should not be completely dried off. If more than 24 hours should have passed, the primer layer must be roughened and new primer applied.

Asphalt joints must be primed with BORNIT^® Asphalt Primer. The asphalt joints must be freshly cut, since adhesion problems would otherwise result. The components A and B are mixed thoroughly and the primer is uniformly applied with a brush. After a flash-off time of 2 to 6 hours (component temperature > +25 °C approx. 2 hours, < +10 °C approx. 6 hours), the sealant can be introduced. The asphalt primer should have dried as far as possible. It must be observed that no moisture film has formed on the primer surface due to undercutting of the dew point. For BORNIT^® Cold Joint Sealant, the components A and B are both contained in one container in layers and not packaged separately. First mix the components (layers) with a suitable tool (slow-speed drill with mixing paddle stirrer), until there are no colour streaks anymore. Now insert the joint sealant into the joint with suitable tools (e.g. manual or compressed air guns) and smooth it with a spatula, smoothing stick or the like within the processing time. Prior to mixing, the temperature of the sealant should be min. +10 °C. The component temperature must not be below +5 °C and not above +40 °C. Until reaching the full load-bearing capacity, a thorough hardening time of min. 48 hours at +20 °C ground and materials temperature must be complied with.

Consumption

depending on joint dimension

Product type

two-component polysulphide-based joint sealant

Density at +20 °C

1.65 g/cm³

Consistency

stable, spatula-applicable

colour(s)

grey, black

Application

spatula, trowel, smoothing trowel, manual or compressed air guns

Processing temperature (ambient and substrate)

+10 °C to +35 °C

Processing time

approx. 2 hours (+23 °C, 50 % humidity)

Thorough hardening time

approx. 24 hours (+23 °C, 50 % humidity)

Cleaning

BORNIT^® PS Cleaner

storage

dry, cool (below +25 °C)

Shelf life

in originally sealed containers storable for 12 months

Hazard class according to ADR

keine

Tensile stress

approx. 0.3 N/mm²

Max. admissible deformation

35 % of the joint width

Shore A hardness

approx. 20

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

The product can be stored for 12 months original sealed container at storage temperatures below +25 °C.

Disposal note

Only recycle completely empty containers. Material residues of component A + B can be disposed of according to AVV-ASN: 080409 * (adhesive and sealing compound residues containing organic solvents or other hazardous substances).

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.

UN-number

No dangerous good in sense of these transport regulations.

Hazard-determining components for labelling

TiO2 (Titandioxid)

H-records

H412: Harmful to aquatic life with long lasting effects.

EUH-records

EUH211: Warning! Hazardous respirable droplets may be formed when sprayed. Do not breathe spray or mist.

P-records

P102: Keep out of reach of children.
P103: Read carefully and follow all instructions.
P273: Avoid release to the environment.
P501: Dispose of contents/container to a suitable recycling or disposal facility.

Recommended, personal protective equipment:

UN-number

No dangerous good in sense of these transport regulations.

Hazard-determining components for labelling

TiO2 (Titandioxid)

H-records

H412: Harmful to aquatic life with long lasting effects.

EUH-records

EUH208: Contains reaction product: bisphenol A epichlorohydrin; epoxy resin (number average molecular weight <= 700); thiram (ISO); tetramethylthiuarm disulphide; bis(dimethyl-thiocarbamoyl) disulphide. May cause allergic reactions.
EUH211: Warning! Hazardous respirable droplets may be formed when sprayed. Do not breathe spray or mist.

P-records

P102: Keep out of reach of children.
P273: Avoid release to the environment.
P501: Dispose of contents/container to a suitable recycling or disposal facility.
P103: Read carefully and follow all instructions.

Recommended, personal protective equipment: