An expansion joint is a material placed in the cracks (or joints) between concrete slabs to protect the slabs from cracking when they contract and expand as the temperature changes. This material acts as a shock absorber, absorbing the stress from the slab’s movement.
What to Put Between Concrete Slabs?
Concrete is one of the most versatile and durable building materials available, but it is also susceptible to cracking and other damage.
To help prevent these problems, many builders choose to put a layer of material between concrete slabs. One of the most common materials used for this purpose is polyethylene sheeting.
This material is relatively inexpensive and easy to install, and it can help to prevent moisture from seeping into the concrete and causing damage.
Another option is to use a layer of sand between the concrete slabs. This can help to improve drainage and prevent the concrete from cracking as it dries.
Whatever material you choose to use, be sure to install it properly to ensure the best results.