In driveways and other outdoor spaces with concrete slabs, there are slab expansion joints in between the spaces between (or cracks) of concrete slabs. These expansions can act as shock absorbents, preventing the slabs from cracking or even breaking due to expansion and contraction with changing temperatures. Therefore, if you’re planning to add a walkway at your residence, here’s what you must know about slab expansion joint.
Where a Slab Expansion Joint Is Placed
You can place slab expansion joints in between any concrete slabs. Thus, you can place these expansion joints where concrete slabs meet other slabs, concrete slabs connect with buildings, and pool decks meet the coping.
The Size of an Expansion Joint
An expansion joint should be as long as the entire width of the concrete slab. In addition, it should also extend the concrete slab’s depth. This way, it can ensure that the entire slab has a shock absorber.
The Material of an Expansion Joint
An expansion joint can exist in various materials as long as it is pliable. Some common examples include cork, asphalt coated, and plastic.
Use an Effective Sealant
You should use a high-quality urethane sealant over each slab expansion joint. This way, there will be a low chance of moisture and precipitation from getting into the joint. It will also prevent the material of the expansion joint from freezing. A proper sealant will ensure that the expansion joint lasts long, protecting your investment.
