CEN/TC 104/SC 8/WG 3 - Bonding

This Part 4 of EN 1504 specifies requirements for the identification, performance (including durability) and safety of structural bonding products and systems to be used for the structural bonding of strengthening materials to an existing concrete structure, including:
1)   The bonding of external plates of steel or other suitable materials (e.g. fibre reinforced composites) to the surface of a concrete structure for strengthening purposes, including the laminating of plates in such applications.
2)   The bonding of hardened concrete to hardened concrete, typically associated with the use of precast units in repair and strengthening.
3)   The casting of fresh concrete to hardened concrete using an adhesive bonded joint where it forms a part of the structure and is required to act compositely.
The performance requirements in this Part of this Standard may not be applicable to highly specialised applications in extreme environmental conditions, e.g. cryogenic use, nor do they cover specialised circumstances such as accidental impact, e.g. due to traffic or ice, or earthquake loading where specific performance requirements will apply.

This European Standard specifies two methods for determining the modulus of elasticity in compression for repair products and systems.
Method 1 is for products and systems with high creep characteristics typically those containing polymer binders (PC).
Method 2 is for products and systems with low creep characteristics typically those containing polymer modified (PCC) and cementitious (CC) binders.

This Part of this European Standard specifies laboratory method of testing to ascertain how dynamic loading affects strength development of structural bonding agents during curing.

The purpose of this standard is to define a laboratory method of testing to ascertain the fatigue of structural bonding agents in composite systems involving the bonding of steel-to-steel, steel-to-concrete and hardened concrete-to-hardened concrete.

The purpose of this standard is to define laboratory methods of testing to ascertain the durability of structural bonding agents in composite systems involving the bonding of hardened concrete to hardened concrete, fresh concrete to hardened concrete and steel to steel.

This European Standard specifies a method for the determination of the early age linear shrinkage of structural bonding agents covered by EN 1501-1 and EN 1504-4. It describes the procedures for the measurement of linear shrinkage from initial gel of polymer, in the form of unrestrained thin strips less than 10 mm in thickness. It is intended for measurement of early age shrinkage, for example up to 24 hours.

This European Standard specifies a method for determining the maximum particle size of fillers in structural bonding agents by the use of a suitable gauge, graduated in micrometres.

This European Standard describes a method for the determination of the strength of a structural bond between two concrete substrates. The method can be used to measure the slant shear bond strength in the following combinations: hardened concrete bonded to hardened strength; fresh concrete bonded to hardened concrete. The test can be carried out with either dry or wet hardened concrete substrates.

This European Standard describes a method for the measurement of the open time of structural bonding agents by use of bonded concrete prisms tested in flexure.

This European Standard describes a method for the characterisation of structural polymer based bonding agents for use in applications such as steel plate structural bonding for the strenghtening of concrete structures. It involves the determination of the slant shear strength and the pull-off strength.

This European Standard describes methods for the measurement of the adhesion of structural bonding agents between fresh or hardened concrete and a hardened concrete substrate

This standard specifies methods of testing to measure the suitability of structural bonding agents for application to vertical and horizontal surfaces.

This European Standard specifies methods for the determination of the coefficient of thermal expansion of hardened structural bonding agents. The first method provides a continuous measurement of linear thermal expansion using thermomechanical analysis techniques. This method may also be used for surface protection systems. The alternative method uses prisms of 40 mm x 40 mm x 160 mm. This method may also be used for repair mortar. Both methods are suitable for bonding agents formulated with fillers of up to 4 mm.

This European Standard specifies a method for the determination of the modulus of elasticity in compression for high creep strain repair products and systems, containing polymer binders (PC) and of mortars and concretes with polymer additives (PCC).
This method is not intended for CC repair materials, for which testing according to prEN 12390-3 should be used.