Extending the life of concrete structures
Corrosion is a common challenge for concrete structures, from parking ramps to bridges, especially in areas exposed to harsh weather or heavy de-icing salts. Cortec’s Migrating Corrosion Inhibitors (MCIs) and Surface Applied Corrosion Inhibitors (SACIs) are proving to be effective solutions for preventing premature deterioration and reducing the need for costly repairs.
Concrete, a durable building material, can be susceptible to corrosion when exposed to moisture and chlorides, often introduced through sea breezes or de-icing salts in colder climates. This is particularly problematic in parking ramps, where the combination of heavy vehicle traffic and exposure to corrosive elements accelerates the deterioration of concrete over time. However, products like Cortec's MCIs are designed to slow down this process and extend the lifespan of concrete structures, including parking ramps, bridges, and other reinforced concrete infrastructure.
One key issue is chloride-induced corrosion. As chloride ions penetrate concrete, they reach the steel reinforcement (rebar), causing it to rust and expand, which can lead to cracking and spalling of the concrete. This often requires expensive repairs and poses safety concerns. Cortec® addresses this problem with their MCIs, which are chemicals that migrate through the concrete and form a protective barrier around the steel, preventing it from reacting with moisture and chlorides.
Parking Ramp
In a recent project involving the maintenance of a parking ramp, Cortec’s MCIs were applied as part of a proactive maintenance strategy. The treatment successfully protected the concrete from corrosion caused by de-icing salts used during the winter. By using MCI-2020, which has one of the highest concentrations of corrosion inhibitors on the market, the concrete’s reinforcement was shielded from corrosive agents, ultimately preventing the kind of damage that would otherwise require costly and disruptive repairs.
“The application of MCI products on parking ramps helps keep the structure in better condition for longer, delaying the need for expensive repairs,” said a Cortec spokesperson. “Routine use of MCIs as part of regular maintenance is a cost-effective approach to managing corrosion and prolonging the life of concrete surfaces.”
Broader Applications
While parking ramps are an important example, Cortec's products are widely used on many other concrete structures. MCIs and SACIs are commonly applied to bridge decks, tunnels, marine structures, and other infrastructure, where they protect against corrosion and reduce the need for frequent repairs. These products can be applied during the initial construction phase, during routine maintenance, or after repairs to provide added protection against the elements.
Cortec’s Surface Applied Corrosion Inhibitors (SACIs) work by penetrating the concrete and protecting the embedded steel reinforcement. In addition to MCI-2020, which provides long-term protection when used with traffic membranes, products like MCI-2018 X are often chosen for a balance of cost and effectiveness. These treatments can be used to enhance the performance of existing concrete structures and extend their operational life by slowing the onset of corrosion.
Preventative Maintenance
The key advantage of using MCIs is that they allow owners to take a preventative approach to maintenance, rather than waiting for visible damage to occur. Corrosion, if left unchecked, causes significant damage over time, requiring major repairs that can be both time-consuming and expensive. By using MCIs as part of a routine maintenance plan, concrete structures can remain in better condition for longer, reducing the need for repairs and preserving the value of the asset.
Cortec also offers tailored solutions for different needs. For example, MCI-2019, which combines an MCI® with a silane water repellent, is a more affordable option for smaller projects or tighter budgets. It helps protect the concrete from moisture while still offering effective corrosion inhibition. For surfaces with residual silane from past treatments, MCI-2019 can be applied directly, ensuring optimal penetration and protection.
“Whether it's a parking ramp, a bridge, or a commercial building, these products can make a significant difference in the longevity of concrete,” the spokesperson added. “By reducing the impact of corrosion, we can prevent costly repairs and help keep infrastructure safe and serviceable for years.”
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