After more than 30 years of corrosion, Oceana South II was in need of an intensive concrete restoration job on 24 balconies. Over time, carbon dioxide, chlorides, acids or other chemicals entered the concrete through the gel pores and cracks which reduced the pH. When the pH levels drop and chloride levels elevate, the film on the rebar is compromised.
Once the presence of water and oxygen starts working its natural erosion, the corrosion begins to decay the concrete. Rebar rust creates a force on the concrete of up to 8000 lbs/sq.in. resulting in concrete spalls. Spalling concrete is concrete that has broken up, flaked, or become pitted. It can result in structural damage, such as damage to reinforcing bars positioned inside the concrete. For this reason, it is important to address spalling when it first starts to appear. Sealers, coatings and water repellents cannot stop the chemical reaction once it has begun.Once the rebar starts to corrode then it is just a matter of time until the concrete is compromised and lost.
For the Oceana repairs, EZ General’s Concrete Repair team first removed the damaged concrete, reformed the damaged areas, treated the rebar steel with a corrosion inhibitor and set new concrete. The 24 balconies look pristine and are ready to withstand years and years of use. Call us at 954-418-8640 to get an estimate on any concrete issues you may have.