D.S. TECHSTAR INC. has been granted ETA 23/0778 for its SEJ-80 strip seal expansion joint for road bridges.

SEJ-80 is a nosing expansion joint for road bridges, used to ensure the continuity of the running surface and its load bearing capacity and the movement of the bridges; it consists of the following components:

• Flexible elastomeric sealing element made of EPDM.
• Edge profiles ‘Z’ shape steel beam, made of at least steel grade S355J2+N according to EN 10025-2.
• Anchorage system: anchor plate and anchor loop of at least steel grade S235JR according to EN 10025-2.

Concrete of minimum compressive strength class C50/60 shall be used for recess filling and reinforcement in case of concrete bridges. If an asphalt overlay is to be used, its thickness should exceed 20 mm.

SEJ-80 is intended to be used for road bridges in the following conditions:

• Operating temperature: from -40 ºC to +45 ºC.
• User category: vehicles
• Action category: standard action (traffic load action)

The expansion joint kit is used in new structures as well as for refurbishment of existing structures. The use in moveable bridges is not considered. The maximum slope in traffic direction is 6%.

ETA 23/0778 is issued according to EAD 120109-00-0107, being the main characteristics assessed:

• As regards mechanical resistance and stability: mechanical resistance, resistance to fatigue, movement capacity, cleanability, watertightness and durability.
• As regards safety in use: Ability to bridge gaps and levels in the running surface.

All details of the assessment can be found in ETA 23/0778.