‘Lockable Dowel’ for Temporary Movement Joints
Dowels transfer load across joints in concrete. At expansion and contraction joints, dowels are used with a sleeve to allow movement.
The new ‘Lockable Dowel’ from Ancon allows initial shrinkage of the concrete to take place and is then locked in position with epoxy resin, inserted from the top of the slab. The locked dowel continues to transfer vertical load, but movement can no longer take place.
This innovative product was developed by Ancon for use at temporary movement joints, most commonly constructed in post-tensioned slabs where pour size can be considerable.
It comprises a Duplex stainless steel dowel component, a box-section sleeve with an L-shaped attachment, a locking plate and two-part epoxy resin.
The box-section sleeve allows lateral, longitudinal and some rotational movement to occur in the initial stage. The dowel is locked after a predetermined time period (generally 60-120 days), when movement between the slabs has stabilised and the joint has been filled. The grout box is topped with cementitious material to complete the installation.
The Ancon Lockable Dowel is backed by independent test results and is simple to both design and install.
In August 2008, it was selected by the UK Construction Products Association to appear in the annual publication ‘Innovation & Achievement’. It was one of only a handful of products recognised by the Association to deliver improvements in site efficiency.
Ancon will be exhibiting at Evolving Concrete 2016 on Thursday 20th October 2016 at the Royal Berkshire Conference Centre, Reading. Ancon will be on Stand 19 for the duration of the event.
Ancon is proud to sponsor The Concrete Society Awards Dinner which is scheduled to be held at The Grosvenor Hotel, Park Lane, London on 17th November 2016.