The peeling of concrete is also known as cancer of the concrete. It has the ability to cause serious hazards, public injury and loss of public property, as it can damage the entire structure, such as damage to the rebar inside the concrete. It is very important to address chipping problems when they start to occur. The ingress of water can cause more than leaks and flaking, it can lead to hazards associated with peeling.
Chipping can lead to a variety of problems for property owners, including structural problems and costly repairs, not to mention lack of visibility. Now that there is an expanding piece of steel inside the concrete, it will only be a matter of time before the concrete breaks. This rupture causes both small and large pieces of concrete to be displaced. Those detached pieces of concrete are the shrapnel itself.
It goes without saying that concrete chips are potentially dangerous and even life-threatening. In high-rise buildings, they can damage the properties below or even make contact with a person. Descaled concrete should be repaired as soon as possible, as it will spread and get worse. Eventually, the rusty rebar will make the structure unsafe.
The truth is that cracks are normal, they simply tend to ruin the appearance of concrete (and its overall strength) by appearing in random places. In addition, a concrete experienced professional should understand the importance of solid reinforcement and how to properly place control joints. The crumbling of concrete is not only unsightly, but can also be a sign of serious damage under the structure. CPT carries out concrete testing work, as well as manufacturing state-of-the-art corrosion control technology.
An additional consideration is that both delamination and descaling offer greater access of air and water to the reinforcing steel within that member; thus creating a corrosion cycle and increased access for corrosive elements that exacerbate the process with each subsequent cycle. If left unchecked, the husking will tend to accelerate and spread, so that eventually the structure could become unstable. To fix a concrete wall that is chipping, you must first cut the concrete around the chipped area. It is important to understand where the husking comes from so that concrete future projects are created with the idea of avoiding this problem.
The combination of corrosion peeling and the delamination of concrete along the edges of the balconies and protruding edges of the building created conditions of rubble falling on the perimeter of the building and unsafe conditions below. If your property has a chipping problem, you will also notice loose pieces of concrete, pitting and rust stains. Descaling tends to be more common in cold climates when defrosting chemicals are applied or when seasonal freeze-thaw cycles damage concrete. However, the most common cause of chipping is corrosion of embedded steel reinforcing bars or steel sections.
Serving Kauai, HI, for nearly 50 years, its contractors have decades of experience in chipping repairs, as well as other home-building projects. Along several perimeters of balconies, this displaced reinforcement was loose and “sunk” at the bottom of the balcony, with relatively large pieces of concrete delaminating along the reinforcement.