It can also easily be done on different areas to test for uniform strength across a pad. The rebound hammer test is a common NDT method used to assess the hardness of concrete, which in turn is interpreted as its strength. Non-Destructive Testing (NDT), taking core or cube samples, or a UPV (Ultrasound Pulse Velocity) test are three ways to check the structural integrity but require the use of special equipment and a Structural Engineer. It is important to determine if the concrete is structurally sound before making a decision. The overall size of the concrete may determine if it’s worth saving or tearing out. However, if the concrete has multiple through cracks or has heaved or pitched out of alignment, it may not be worth saving and should be removed. Plus, it extends the life of the original concrete. Resurfacing existing concrete can add new life, finish, and even color to worn, chipped and cracked surfaces. It saves time, resources, and money, provides a solid base for the pour, and means no removal and disposal concerns. There are many reasons you may wish to pour concrete over concrete. Adding a layer of concrete on top will bring new life to an old surface. Structurally sound concrete may have cracks and chips or have settled over time. It is an ideal solution for worn or settled concrete provided it is structurally sound and the added thickness won’t pose a problem with openings and drainage. You can pour concrete over existing concrete. Concrete exposed to the elements and daily wear and tear can become cracked, pitted, chipped, and worn. Modern concrete came into use in the last 200 years, but when protected and maintained, has demonstrated longevity that is promising. What if My Old Concrete Has a Lot of Cracks in It?Ĭan You Pour Concrete Over Existing Concrete?Īncient concrete has lasted for millennia. Pouring Concrete Next to Existing Concrete.
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