JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.
By Category
Lifting & Bracing
Façade Support & Restraint
Formwork & Site Accessories
Structural Connections
Anchoring & Fixing
Industrial Technology
By Brand
Meadow Burke
Thermomass
Halfen
Plaka
Scaldex
Ancon
Moment
Aschwanden
Connolly
Isedio
The MB Lockable Dowel has been designed for use at temporary movement joints, most commonly found in post-tensioned concrete frames.
The MB Lockable Dowel has been designed for use at temporary movement joints, most commonly found in post-tensioned concrete frames. These dowels allow initial shrinkage of the concrete to take place and are then locked in position with a mechanical plate and a controlled amount of epoxy resin. The locked dowels continue to transfer shear, but prevent further movement taking place.
The use of MB Lockable Dowels can save a significant amount of time and materials over other construction methods. Concrete shrinkage has traditionally been accommodated by leaving gaps in the slab called “pour strips” or “closure strips.” These strips are filled once movement has stabilized, however until they are filled the slabs must be shored, restricting site access and delaying site progress. Gaps in the slab also create a hazard for site workers, use additional formwork and leave the soffit face marked.
Lockable Dowels improve site access, minimize formwork requirements and accelerate the rate of construction. With a Lockable Dowel, there is less requirement for the slabs to be shored or a support corbel to be constructed, as shear load is transferred by the dowel. The time saved by early removal of slab props can be significant.
A Lockable Dowel also provides many advantages over the site-assembled arrangement of carbon steel reinforcing bar, galvanized or plastic ducting, vent tubes and a non-specific grout, which is sometimes used by contractors.
