Protection for carbon fibre bonded beams

GEOSTAFF® offers, through Laboratory Assessment No. EFR-18-001644, validated solutions in GEOTEC® to protect carbon reinforcements installed under concrete slabs and beams according to the fire performance required and critical temperatures given by the manufacturer.

When existing load-bearing structures require reinforcements (in the case of a change of condition, earthquake containment, rehabilitation, etc.), one of the solutions consists of bonding carbon fibre reinforced laminates with an epoxy resin-based adhesive.

In the event of fire, the epoxy resin in the glue is not resistant and the carbon fibre reinforcements will come loose.

In order to ensure the fire stability of the carbon plates and by extension of the concrete structures, it is essential to guarantee the temperature of the glue used. This maximum temperature, which varies between 45 and 80°C, is indicated in the manufacturers’ technical notices, to which reference should be made.

System performances

Protection under concrete floor slab

Desired interface temperature (C°) 30 min 60 min 90 min 120 min 180 min
Desired interface temperature (C°) 30 min 60 min 90 min 120 min 180 min
45 2x30 mm (Overlap 100 mm) 2x45 mm (Overlap 100 mm) 2x45 mm (Overlap 100 mm) 3x45 mm (Overlap 200 mm) -
60 2x30 mm (Overlap 100 mm) 2x30 mm (Overlap 100 mm) 2x45 mm (Overlap 100 mm) 2x45 mm (Overlap 200 mm) -
80 2x30 mm (Overlap 100 mm) 2x30 mm (Overlap 100 mm) 2x30 mm (Overlap 100 mm) 2x45 mm (Overlap 100 mm) 2x45 mm (Overlap 100 mm)

Protection under the beam : Reinforcement installed on the bottom of the beam

Desired interface temperature (C°) 30 min 60 min 90 min 120
Desired interface temperature (C°) 30 min 60 min 90 min 120
45 2x45 mm 2x45 mm 3x45 mm -
60 2x45 mm 2x45 mm + 30 mm 2x45 mm + 30 mm 2x45 mm + 30 mm
80 2x30 mm 2x45 mm 2x45 mm 2x45 mm

Protection under the beam : Reinforcement installed on the side of the beam

Desired interface temperature (C°) 30 min 60 min 90 min 120 min
Desired interface temperature (C°) 30 min 60 min 90 min 120 min
45 2x45 mm 2x45 mm 2x45 mm + 30 mm 3x45 mm
60 2x30 mm 2x45 mm 2x45 mm 2x45 mm + 30 mm
80 2x30 mm 2x30 mm 2x45 mm 2x45 mm

*Note: The indicated values are calculated according to the protection thickness of GEOTEC®S as well as the required fire performance.

Associated products

Plaque GEOTEC® S30 Geostaff

GEOTEC® S30

1 hr. fire protective board 30 mm thick and with dimensions from 200 to 1100 (W) x 1000 (L) mm (in steps of 50 mm).

Technical notice
Plaque GEOTEC® S45 Geostaff

GEOTEC® S45

2-hr. fire protective board 45 mm thick and with dimensions from 200 to 1100 (W) x 1000 (L) mm (in steps of 50 mm).

Technical notice

GEOTEC® SX30

1 hr. fire protective board, thickness 30 mm and unique dimension 1200 (W) x 1000 (L) mm.

Technical notice
Plaque GEOTEC® SX45 Geostaff

GEOTEC® SX45

2-hr. fire protective board 45 mm thick and unique dimension 1200 (W) x 1000 (L) mm.

Technical notice

GEOCOL®

Powder-coated glue, available in 25 kg bags, especially formulated for the assembly of GEOTEC® and GEOFLAM® boards.

Technical notice

Technical documentation

ASSESSMENTS

Download the list of existing ASSESSMENTS

DOP

Download the performance declaration you need.

Product Data Sheets

Find all our product data sheets : fire protective boards and accessories, inspection hatches, plasters, glues and other fire protection products.

Catalogue Geostaff Système polochonné

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Geostaff handbook 2019
Système polochonné

Catalogue Geostaff Système collé vissé

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Geostaff handbook 2020
Glue and Screw system