How Can I Make My Concrete Stronger?

Strong concrete is less likely to crack than weak concrete. A higher psi as well as proper care can go a long way in making sure your concrete stays smooth and even for years to come.  

• What Works 

Concrete can be made stronger by adding a rebar. Rebar increases the tensile strength of concrete because the steel bars absorb the pressure for the slab. However, it is not advised that you replace your cracked, settled slab for one with rebar. A reinforced slab can still settle, so it’s better to simply invest in a simple repair solution over an expensive replacement job. 

Another way to make sure that concrete stays strong is by being vigilant about efflorescence. Efflorescence is the accumulation of salt on the surface of the concrete, and it looks like a white stain. Unlike mold, efflorescence isn’t dangerous, but it can clog up the concrete’s pores. This causes water to get trapped inside the concrete and break it apart from the inside, which weakens it and causes more cracks.  

• What Doesn’t Work 

Pouring water on your slab will not make it stronger. This is only true if the slab is in the middle of curing. Once the concrete has cured after 24 to 48 hours, the water will weaken the slab. Water is an erosive element, and it will cause concrete deterioration after years of exposure. Patching up the surface of the slab doesn’t work either because the new layer of cement doesn’t fully stick to the old concrete. Patchwork also does not help the settling process since that has to do with the soil, not the concrete. 

There aren’t any reinforcement solutions that can be applied to concrete to make it stronger once it has cured. The best strengthening method is simple care and prevention, as well as a vigilant eye that can help you determine when it’s time to call in a contractor for repairs. Focusing on prevention instead of reinforcement can help save you thousands of dollars since concrete slabs are difficult to repair once the cracks become significant.