MBrace FRP  

Description

BASF-MBrace FRP is a family of lightweight systems composed by ready to use CARBON LAMINATE, CARBON TOW SHEET, GLASS SHEET FIBRES and ARAMID SHEETS. BASF-MBrace FRP provides very high tensile strength and is for supplemental flexural reinforcement and compression confinement of concrete, masonry, wood elements and shear reinforcement.

The BASF-MBrace Composite Strengthening System is a comprehensive approach to bringing innovative strengthening techniques to the construction industry. The BASF-MBrace Composite Strengthening System is more than an economical, field proven technology for supplemental structural reinforcing – it offers single source support from specification through completion.

The system consists of:

• BASF-MBrace Primer – improves the bonding of the composite to the substrate
• BASF-MBrace Saturant for fibre sheets BASF-MBrace Laminate Adhesive for the Laminate version
• BASF-MBrace Fibre Sheets (CF Glass & Aramid) fibre reinforcement or BASF-MBrace Laminate reinforcement for Laminate version

BASF-MBrace Primer

BASF-MBrace Primer is the concrete bonding adhesive for use with the BASF-MBrace Composite Strengthening System. It is a 100% solids low viscosity epoxy resin able to cure in the presence of moisture and at temperatures as low as 2°C. When applied to sound concrete BASF-MBrace Primer gives a high tensile bond strength to the BASF-MBrace Composite Strengthening System.

BASF-MBrace Laminate Adhesive is the epoxy resin for bonding carbon fibre laminates with the BASF-MBrace Composite Strengthening System. It is a 100% solids, non-sag paste epoxy resin material. Other recommended uses include sealing surfaces prior to epoxy injection, bonding of rigid materials, and leveling uneven surfaces prior to application of the BASF-MBrace Composite Strengthening System.

BASF-MBrace Saturant resin is the easy-to-apply, 100% solids material that permits adhesion of a lightweight, carbon Fibre or glass tow sheet or Aramid, within the BASF-MBrace Composite Strengthening System. When cured with the tow sheet, BASF-MBrace Saturant resin produces a high performance composite system for use in external structural repair or upgrade applications.

The backbone of the BASF-MBrace Composite Strengthening Systems, BASF-MBrace Fibre Reinforcement materials are enveloped in BASF-MBrace Saturant resin to yield a range of high performance features.

BASF-MBrace Composite Materials included the BASF-MBrace CF240, CF640 and Carbon Fibre Laminate Systems as well as BASF-MBrace AR and E Glass Systems and the Aramid A120 System. Each fibre reinforced system within the finished BASF-MBrace Composite Strengthening System provides high strength to cross section ratio and structural integrity that is similar to bonding steel plate to structural surfaces.

Features and benefits

To reinforce structures with strong elements in tension. BASF-MBrace FRP enables the traditional technique of plating with steel plates to be replaced with extremely light materials that are easy to install and to:

• Increase the load-bearing capacity (e.g., structural conversion following a change in capacity load)
• Reduce deformation to the working loads (increase in rigidity)
• Increase the fatigue strength
• Limit or cover the fissuring states (increase in durability)

To add confinement to compression elements, through wrapping techniques, BASF-MBrace FRP gives structures:

• Greater load-bearing capacity
• High ductility against seismic stress
• Greater resistance to dynamic and impulsive stress

The BASF-MBrace FRP system also:

• Enables the amount of reinforcement to be calculated in relation to the performance required or the stress flow
• Allows faster maintenance, thereby reducing costs
• Increases the durability of the structure by protecting it against the aggressive action of chlorides and freezing and thawing cycles

Application procedure

• The surfaces of elements that are still in good condition or restored with putty from the Concresive line should be sanded down. With degraded structures, the whole layer should be removed by scarifying, hydrodemolition or similar and then structural restoration carried out with mortar eg Emaco S88C.
• Remove oils, grease, dust or any other loose material from the surface.
• Apply the layer of BASF-MBrace Primer by roller or brush

BASF-MBrace FRP SHEETS

• The first layer of BASF-MBrace Saturant may be applied by roller or spray.
• Apply the layer of BASF-MBrace Fibre.
• Using the ribbed roller, exert a constant pressure by moving the tool both ways in the direction of the fibres until they are fully impregnated.
• Wait for approx. 5 minutes.
• Then apply the second coat of BASF-MBrace Saturant.
• Repeat the preceding four points for all the layers or plies of BASF-MBrace Fibre scheduled in the application.

BASF-MBRACE FRP LAMINATE

• Clean up the BASF-MBrace Laminate surface with a proper solvent.
• Apply one layer of BASF-MBrace Laminate Adhesive 3mm thick on the surface of laminate.
• Apply BASF-MBrace Primer onto the surface.
• Apply BASF-MBrace Laminate and using the relative roller, exert a constant pressure by moving the tool both ways in the direction of the fibres