NEWS ALERT: CorrVerter® MCI® Rust Primer: The Low-Labor Surface Prep Option in Concrete Repairs

CorrVerter Application

Rusty steel reinforcement is usually at the heart of concrete deterioration. Corrosion makes the rebar “grow,” putting pressure on the concrete cover, which ends up cracking and spalling. When workers go to place a new concrete patch, proper surface prep is imperative to prevent further rusting and ensure good adhesion between the rebar and repair mortar. Often, blasting is used to achieve a bright metal surface on the rebar. However, a laborsaving alternative exists in the form of CorrVerter® MCI® Rust Primer to passivate and protect rusty reinforcement.

CorrVerter® MCI® Rust Primer is a one-component water-based primer that converts surface rust into a passive layer and protects against further rusting. It does so through a combination of chelating agents and a high-solids latex coating with low water-vapor permeability. According to ASTM A944 testing, rebar coated with CorrVerter® MCI® Rust Primer offers the same or better bond strength to concrete compared with a control. This surface treatment application is much simpler than sandblasting. Workers only need to brush off the loose rust before coating remaining tight rust with CorrVerter® MCI® Rust Primer, making sure to allow at least 12 hours of curing time prior to applying subsequent repair
materials.

CorrVerter® MCI® Rust Primer is a great low-labor option for contractors, building owners, engineers, DOTs, and anyone engaged in concrete repair. It helps workers quickly and easily prepare rusty surfaces and leave a clean, sound base for patch materials. Contact us today for more information on this laborsaving rust converter primer: https://www.cortecmci.com/contact-us/

Keywords: concrete repair, rusty rebar surface prep, corrosion protection, repair mortars, alternatives to sandblasting, Cortec, MCI, CorrVerter, rust primer, concrete spalling

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CASE HISTORY SPOTLIGHT: Case History #394: Hakalau Seismic Retrofit

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The Hakalau Bridge in Hawaii was suffering from steel girder corrosion caused by volcanic sulfuric dioxide as well as chloride enriched moisture from the Pacific Ocean. Some of the rusty areas on the bridge were especially hard to clean. CorrVerter® was used to prime the tight rust in these areas where good surface prep was difficult to achieve. MCI®-2005 NS was added to new concrete poured to cover the foundation and enhance the structural strength of first level bents in case of seismic activity. MCI® Mini Grenades were used in repair mortars for hand lay-up. The products’ ease of use and protective abilities made them excellent solutions to extend the expected service life of the structure.

Read the full case history here.

For a PDF version please click here.

NEWS ALERT: MCI® Grenades Now Available at Lowest Price Ever!

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builder working with shovel during concrete cement solution mort

We are excited to announce competitive new pricing for MCI® Grenades! The cost-reduction comes thanks to the automation of our MCI® Grenade™ packaging system, which lowers production costs by allowing greater economies of scale. This translates into cost savings for customers who will be able to get more for their money next time they order MCI® Grenades. Customers will enjoy more savings per MCI® Grenade while also getting them in larger quantities: 40 MCI® Grenades (32 Metric MCI® Grenades) per drum instead of only 20 MCI® Grenades per carton. This is a great opportunity to stock up for emergencies on an economical, easy-to-use form of concrete corrosion protection and encourage more widespread use among ready-mix suppliers, contractors, and engineers.

MCI® Grenades have long been a convenient, cost-effective method of adding Migrating Corrosion Inhibitor™ admixtures to construction projects. Whether for a concrete repair or simply as a backup admixture for a new concrete pour, the MCI® Grenade™ is a great way to toss a powerful dose of corrosion protection into the ready-mix, while getting all the advantages of a nitrite-free admixture. The water-soluble packaging dissolves in contact with the mix water, releasing Migrating Corrosion Inhibitors to be dispersed throughout the batch. MCI® Grenades can be incorporated at the ready-mix plant or added directly to ready-mix trucks and portable mixers at the jobsite. One MCI® Grenade™ provides enough corrosion protection for 1 cubic yard of concrete (one Metric MCI® Grenade™ protects 1 m³) and migrates to adjacent areas to protect surrounding metals and minimize the ring anode effect.

Contact us for more information on our new MCI® Grenade™ quantities and pricing: https://www.cortecmci.com/contact-us/

Keywords: MCI Grenades, Migrating Corrosion Inhibitors, concrete repair, concrete admixtures, corrosion inhibiting admixtures, MCI admixtures, calcium nitrite alternatives, Cortec, ring anode effect, halo effect

For a PDF version please click here.