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Lockable Dowels

Lockable Dowels

Ancon Lockable Dowels and Locking Pins

Lockable Dowels and Locking Pins are unique, patented products.

They were designed by Ancon for use at temporary movement joints, most commonly found in post-tensioned concrete construction. They allow initial shrinkage of the concrete to take place and are then locked in position, by mechanical and chemical means, to prevent further movement taking place.

Australia Patent No. 2008294503

Lockable Dowels transfer shear load in both their locked and unlocked state which reduces slab propping times and accelerates the rate of construction.

Locking Pins are ideal for applications where there is little or no shear load.

These products replace the use of one-metre 'pour strips' or 'closure strips' in post-tensioned concrete frames and eliminate the need for complicated formwork.

Temporary Movement Joint

Various site-assembled components

Ancon Locking Pin

Pour strip in slab

Ancon Lockable Dowel

Pour strip at wall-to-slab junction

Ancon Lockable Dowel

Slab-to-Slab Lockable Dowels

Ancon ESDQ-L20 Lockable Dowel

The ESDQ-L20 Lockable Dowel allows initial movement to take place and then, after a predetermined time period (generally 90-120 days), is locked with a two-part epoxy resin poured into the L-shaped grout box. This product has a design capacity of almost 70kN in shear and up to 100kN in tension.

Ancon HLDQ-L30 Lockable Dowel

The HLDQ-L30 is a high load Lockable Dowel with a design capacity of up to 136kN in shear and up to 100kN in tension.

Slab-to-Wall Lockable Dowel

Ancon ESDQ-L20W Lockable Dowel

The dowel component is manufactured from 30mm diameter Duplex stainless steel, but is shorter than the ESDQ-L20 dowel. One end of the dowel is designed to fix into the stainless steel Ancon SKS24 Threaded Anchor cast into the face of the concrete, and the other end features a series of grooves to accept the Locking Plate. The sleeve component is the same as used in the ESDQ-L20.

Building Information Modelling
For BIM Object of these products, please click here

Slab-to-Slab Locking Pin

Ancon ALP Locking Pin

The pin component is manufactured from 500MPa coil bar which comprises a constant rolled thread. One end of the pin features a hot forged head and the other end features a notch to accept the Ancon locking plate. The sleeve allows lateral and some rotational movement of the pin, in addition to longitudinal movement, prior to locking. The sleeve features the standard Ancon void former. A blue lid allows easy identification on site, differentiating it from a Lockable Dowel in a cast slab.

Slab-to-Wall Locking Pin

Ancon ALP-W Locking Pin

For walls, the pin component is manufactured from 500MPa coil bar like in the slab-to-slab system but is shorter in length. One end of the pin screws directly into a threaded anchor (product ref. ALP19TA) that is cast into the face of the concrete wall and the other end features a notch to accept the proprietary Locking Plate. The sleeve component is the same as used in the standard slab-to-slab ALP system

Latest News

Lockable Dowel wins 2017 MIP Innovation Award

The Lockable Dowel has won a 2017 Most Innovative Product award in the USA. It has been named Editor’s Choice in the ‘Materials for Concrete Construction’ category.