A slab expansion joint sits between two adjacent concrete slabs. These joints replace rotten wood that is usually found between slabs in driveways. They can also be used when repairing a sidewalk’s joint if it has one made of wood. The expansion joint is a piece of what is called formwork, and it defines the slab’s dimensions.
Curing Concrete
After cement cures, formwork remains to accommodate slab movement. During the summer, the slab warms up and expands, and in the winter, it cools down and contracts. Typically, this wood acted as the expansion joint, but it does not do a great job.
Wood Joint Failures
There is a difference between a formwork piece and an expansion joint, and it is hard to do both jobs. The elements conspire against the wood over time, making it rot. Moisture allows bacteria to attack or destroy the wood, and it breaks down and decomposes. Then, the slab’s movements further accelerate the decomposition. These movements let in dirt, and tree roots begin to pierce their way inside.
Replacement Joints
This item is made from a rubber-like material that flexes and holds its shape. Users push it between two concrete slabs, replacing the old wooden joint. This item’s rounded edges sit just beneath the surface, holding it in place.
The clean finished appearance will be noticeable as soon as it finishes installed. Your friend and family will notice the vibrant appearance. It is available in multiple sizes, so you can find one that fits your needs.
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