‘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.
Construction industry remains open. Manufacturing at Leviat continues through latest national lockdown.
The health, safety and wellbeing of all those who work with us and for us, as well as the general public, is always our No. 1 priority.
From January 1st 2021, the UK will recognise both the EU CE marking approvals, for a time limited period, and the new UK based approval system, which will be known as the UKCA mark. The EU will only recognise CE marking by EU notified bodies as proof of efficacy moving forwards. Leviat has been working closely with both EU notified and UK approved bodies to ensure compliance is achieved at the earliest possible opportunity and we can confirm that we have obtained all relevant certification.