SureLok™

SureLok™ is a revolutionary engineered solution to Temporary Movement Joints (TMJ).

SureLok™ is a Temporary Movement Joint (TMJ) system that is the result of years of experience, investment, research, development & testing. Designed to address the common challenges faced with alternate TMJ systems, it is fully compliant with the National Construction Code of Australia and offers a cost-effective, reliable, and practical solution for TMJs. SureLok™ enables the removal of back-propping while slabs shrink, ensures a fully sealed and grouted system for permanent locking, and provides superior shear and tension capacities. Additionally, the intelligent void ensures the dowel retains cover for durability and fire within the sleeve across the joint without having to rely on the joint itself being sealed or grouted.

SureLok SL200S Installation for Temporary Movement Joints

SureLok 200S is the preferred solution for slab-to-slab temporary movement joints (TMJs), often required in post-tensioned concrete construction. SureLok 200S is suited to slabs that are at least 200mm deep and allows for back-propping to be removed once concrete strength achieves 32MPa. SureLok offers unrivalled structural reliability and leads the way as the first solution to accommodate bi-directional temporary movement and two-axis load transfer, all within a fully-sealed compartment. SRG Global.

Video:

Slab to slab connection

SureLok™ is the result of years of experience, investment, research, development and testing. It has been developed for the post-tensioning, construction and mining industries with a patent pending in Australia and internationally. SureLok™ is revolutionary as it offers a range of safety, cost, design and performance benefts. It is a world class leader in the industry as it is the frst solution that provides bi-directional temporary movement and two-axis load transfer, all within a fully sealed component. Temporary Movement Joints (TMJ) are the most complex joints in concrete slabs as they require temporary free movement in two horizontal directions prior to being locked tight for permanent stability and integrity of a structure. The solution required a combination of specialist areas of engineering outside of the standard feld of structural engineering, using hydraulic engineering to design a movable pressure seal as well as elastomers and polymers to deliver affordability. The SureLok™ solution engineers an intelligent void with a pressure sealed system bridging the joint whilst allowing two-way horizontal movement. When required, SureLok™ permanently locks the joint together with an approved grout mixture used for post-tensioned tendons. The intelligent void ensures the dowel retains cover for durability and fire within the sleeve across the joint without having to rely on the joint itself being sealed or grouted. Since 2011, over 12 stages of prototype development has been undertaken against rigorous design and site-performance criteria, complemented by product testing at both the University of Technology Sydney and the Western Sydney University. SRG are extremely pleased and proud to have resolved the past long standing issues of temporary movement joint performance, whilst utilising the most appropriate constituent materials to deliver strong economic benefits for all applications. You can now have peace of mind knowing that SureLok™ is the tested and proven solution to Temporary Movement Joints and is the answer to your TMJ needs and requirements. The SureLok™ system now comprises two distinct ranges: one for Slab to Slab connections, and one for Slab to Wall connections, for a total of eight unique models.