Single gap joints



Expansion joints


  • Typical movements: Up to 100 mm

  • Equipped with noise-reducing surfacing

  • Low-depth design

  • Quick installation on refurbishment projects


mageba TENSA-CRETE expansion joints of type RE-LS are single gap joints for movements of up to 100 mm. The RE-LS joints feature so-called “sinus plates” on their surface, which make this increased movement capability compared to type RE possible and also reduce noise from over-passing traffic by up to 80%. The steel edge profiles of the TENSA-CRETE joint are anchored in ROBO-FLEX, mageba’s quick-hardening and watertight polymer concrete. A key advantage is the quick and cost-effective installation of the system, which results from the joint’s being fully anchored within the depth of the road surfacing and thus requiring no breaking out of the structure beneath. Thanks to the very short curing time of the polymer concrete, traffic can already be allowed to cross the joint within a few hours of placing. The drainage of the joint is via the drainage system of the bridge deck.


TENSA-CRETE expansion joints are suitable for use on bridge decks with either asphalt or concrete surfacing, and can be installed on practically every type of new or existing bridge. Thanks to their limited structural depth and quick installation, they offer great benefits when used to replace existing joints during rehabilitation works.


TENSA-CRETE expansion joint type RE-LS


Recess prior to installation of joint


TENSA-CRETE type RE-LS expansion joint after positioning in recess


Mixing of ROBO-FLEX polymer concrete


Placing of ROBO-FLEX polymer concrete


Single gap expansion joint in use – featuring “sinus plates” and ROBO-DUR


3D design representation of a TENSA-CRETE expansion joint equipped with “sinus plates”