PRESS RELEASE: Reduce Your Concrete Carbon Footprint with Cortec® MCI® Technology!

concrete greenhouse gas emissions, sustainable construction, carbon footprint, CO2 emissions, concrete admixtures, Cortec, MCI, Migrating Corrosion Inhibitors, LEED certification, From Grey to Green


Concrete is the world’s most widely used construction material—and also one of its greatest contributors to greenhouse gas. The root cause is cement production, which alone accounts for approximately 8% of global COemissions. At this rate, successful strategies to lower concrete carbon output are especially significant. MCI® Technology is one of those simple but powerful strategies that helps the construction industry take a pivotal step toward a smaller carbon footprint.

Using MCI® Technology to Extend Concrete Service Life

How can MCI® Technology help lower carbon emissions? The answer lies in its ability to enhance concrete durability. Ashraf Hasania, Cortec’s MCI® Technical Sales and Product Manager, who holds degrees in civil and environmental engineering, explains the common-sense logic: “Increasing the service life of concrete structures using durable materials can reduce the need for demolishing old structures and building new ones. It can also lead to less need for major repairs. This lowers the carbon footprint of concrete structures and promotes sustainable practices.”

The way MCI® helps concrete structures last longer is by attacking one of the biggest enemies to concrete durability: corrosion of metal reinforcement. As rebar rusts due to carbonation, chloride exposure, and other environmental conditions, it expands and puts pressure on the concrete cover. This leads to cracking, spalling, and a vicious cycle of further exposure to corrosives and additional damage. Based on salts of amine carboxylates, MCI® Technology interrupts this process by migrating through the concrete pores to form a protective molecular layer on the rebar surface to delay and reduce corrosion. Service life models and lab and field studies have shown that MCI® can increase service life by three to four times. This translates into a comparable reduction in concrete’s carbon footprint.

When Can MCI® Be Used?

MCI® can be used at any stage in a structure’s lifecycle, but the best course to pursue is early treatment. “Sustainability in construction starts early in the process,” Hasania advises, “specifically in [the] design phase with careful selection of construction materials and concrete mixes.” Ideally, this includes the choice of MCI® concrete admixtures, which can be added to new concrete at the ready-mix plant or construction site. In contrast to calcium nitrite admixtures, MCI® admixtures have a low dose independent of chloride loading and do not negatively affect concrete mix properties. Existing structures can be treated with MCI® in the form of surface applied corrosion inhibitors (with or without water repellent) and repair mortars. Once applied, the MCI® molecules migrate through concrete pores to protect embedded rebar in sound concrete, or to even out corrosion potential and interrupt the problematic ring-anode/halo effect between new patch repairs and old concrete.

Other Sustainability Features

In addition to the main goal of helping concrete structures last longer, MCI® Technology offers other attractive features. For example, MCI®-2005 is a USDA Certified Biobased Product that contains 67% USDA certified biobased content. This use of renewable resources can help the project earn credits toward LEED certification while adding a more sustainable image to the structure and builder. Another attractive feature is the low toxicity of MCI®
products, many of which are certified to meet NSF Standard 61 for use in potable water structures.

Take a Step Toward Sustainable Construction

Considering the costs of construction and rebuilding alone, the benefits of extending concrete service life are clear. Add to it the ripple effect of decreasing the amount of new cement needed to repair and replace old structures, and the advantages of MCI® Technology go even further—helping the construction industry take major steps toward a smaller carbon footprint and a more sustainable future. Learn more about sustainability with Cortec® MCI® today:

Keywords: concrete greenhouse gas emissions, sustainable construction, carbon footprint, CO2 emissions, concrete admixtures, Cortec, MCI, Migrating Corrosion Inhibitors, LEED certification, From Grey to Green

Need a High-Resolution Photo? Visit:

For a PDF version please click here.

Cortec® Releases Quick Start Guide on Direct to Metal Coatings for Construction Applications

Painted Yellow Guard Rails on a Staircase mci cortec coatings

Cortec® MCI® is pleased to release a new coatings guide designed specifically for the building maintenance and construction industries. This two-page handout gives a quick intro to Cortec® Micro-Corrosion Inhibiting Coatings™ Technology before getting down to basics on how and where to apply which coatings. The guide is here to help engineers, contractors, and maintenance crews easily protect structural steel and metal equipment around their facility or construction site.

Why Coat Metal?
Construction sites and facilities have countless metal structures or equipment components that need protection—from structural steel to steel plates, from metal platforms to stairs and banisters, from metal HVAC components to decorative architecture. Depending on the surrounding environment (e.g., outdoors vs. indoors), some will be at higher risk of corrosion and require heavy duty protection. Others may need a simple layer of paint to improve appearance and delay gradual oxidation. This quick guide helps simplify coatings selection so workers can get down to the business of protecting their assets with a good coating combo for each specific application.

How Should Metal Coatings Be Applied?
The new guide briefly outlines a critical part of coatings success—how to properly apply a system. For best results, this includes good surface prep (e.g., rust removal), optional rinsing, and the final application of a primer plus one or more topcoats. The actual number of coatings chosen can depend on the durability and aesthetics required on a case-by-case basis. One of the nice things about Cortec® Coatings is that many can be applied directly to metal, and some can function as metal primers, topcoats, or even intermediate coats for more flexibility. The brochure includes a full coating system application example to show how this might be done.

What Features Does Each Coating Have?
Another important part of the new construction coatings guide is the listing of specific features for each primer and topcoat. These characteristics can
mean the difference between which coating will be used inside versus outside, in a strong chemical processing environment versus a dry warehouse, and so on. Some workers will place the most importance on low VOC or water-based coatings. The one- or twopart nature of the system can also factor into the equation, as some users want to go quick and easy with 1K coatings, while others desire to benefit from the cross-linking advantages of a 2K coating.

Where Should Each Coating Be Used?
The best part of the coatings guide is that it brings all the coatings together with a comprehensive chart of recommended system combinations for different applications. This is a great reference when workers know what kind of equipment or structural steel they need to coat but feel at a loss navigating through all the different coatings characteristics to choose the right coating on their own. For those who want a simple answer to the question, “Which coating should I use right here?” this selection guide is a great place to turn immediately. It offers multiple primer/topcoat combinations that go well together and specific examples of where they can be used:

  • Clean structural steel
  • Rusted structural steel
  • Chemical exposure environment
  • Handrails, banisters, steel plates, and mechanical equipment
  • Pipes

The Brainwork Has Been Done – Now Enjoy!
Cortec® seeks to develop products and resources that will improve the ease and efficiency of everyday corrosion protection tasks. The new coatings
guide is a great example and will be a tremendous boost for construction and maintenance workers who need to make a quick decision on protecting metal components without having to become coatings experts themselves. Cortec
® has done the work to make coatings selection easy and positive. Take advantage of those efforts today by browsing “Cortec’s Coatings Guide for Construction Applications” here:

Keywords: Cortec Coatings, direct to metal coatings, corrosion inhibitor coatings, corrosion protection, how to apply a coating, metal primers, low VOC coatings, water-based coatings, construction industry coatings, building maintenance

Need a High-Resolution Photo? Visit:

For a PDF version please click here.

Get Ready to Take a Fresh Look at High Performance Concrete Repairs!

Cortec® is pleased to announce a fresh new look to its MCI® HPRS® brochure! The acronym HPRS® stands for “High Performance Repair Systems,” which use MCI® Technology to enhance the durability of concrete repairs. By following the recommendations of the updated MCI® HPRS® brochure, engineers, contractors, and DOTs can take a path to longer lasting repairs and extended concrete structural service life.

Enhance Concrete Repair Durability
The MCI® HPRS® brochure starts with a brief overview of MCI® Technology, centered on the action of Migrating
Corrosion Inhibitors. These are able to diffuse throughout concrete pores in liquid and/or vapor form to protect anodic and cathodic areas of embedded metal reinforcement. MCI
® forms a protective molecular layer on metal surfaces and significantly reduces corrosion rates, leading to a longer service life for the structure.

Combat the Ring-Anode Effect
Next, the brochure explains how MCI® evens out the corrosion potential between areas of new and old concrete to combat the insidious ring-anode effect. This problem arises because of the relatively higher pH and resistivity of new patch areas compared to old concrete. The difference in corrosion potential causes corrosion to accelerate in concrete adjacent to the repair. MCI® migrates to these surrounding areas to minimize the halo effect.

Concrete Repair Instructions
After a brief description of each HPRS® component, the brochure lists updated step-by-step instructions on how to include MCI® in
a concrete repair:

1. Prepare the Substrate
2. Treat and Clean Rusted Rebars
3. Application of Repair Materials
4. Surface Applied Corrosion Inhibitor Application
5. Final Coating

Each step identifies which HPRS® components should be used and where it should be applied after the substrate has been properly prepared in Step 1. For example, CorrVerter® MCI® Rust Primer is recommended for passivation of rusted rebars under Step 2. Step 3 summarizes the use of MCI®-2039 repair mortar for horizontal repairs, MCI®-2040 repair mortar for vertical and overhead repairs, and MCI®-2044 concrete mix for
form and pour applications. Step 4 identifies two surface applied corrosion inhibitor options—either MCI
®-2020 as a pure corrosion inhibitor for extra protection on the cured patch, or a two-in-one MCI® water repellent / surface applied corrosion inhibitor for repairs where no membrane or coating system will be used. Step 5 recommends MCI® EcoRainbow® Architectural Coating as a final coat over surface applied corrosion inhibitors to seal out water and carbonation while providing a great finished look.

Implement the Latest MCI® HPRS® Strategy
Ultimately, concrete repair is a necessary fact of life. Fortunately, contractors, DOTs, and engineers can go a long way toward maximizing the durability of their concrete repair through strategic use of the tips and materials outlined in the latest MCI® HPRS® brochure.
Browse the updated brochure today for fresh ideas:

Keywords: Cortec, MCI, concrete repair, ring anode effect, halo effect, rusted rebar, repair mortars, water repellents, surface
applied corrosion inhibitors, Migrating Corrosion Inhibitors

Need a High-Resolution Photo? Visit:

For a PDF version please click here.

PRESS RELEASE: MCI® Grenades – Your Concrete Corrosion Inhibitor Backup Plan for Worst-Case Ready-Mix Scenarios

Picture this scene. You are a project superintendent in the middle of a stressful concrete pour. The engineer has specified Cortec® MCI® as the corrosion inhibiting admixture. So far, all has gone well with no early set problems. In fact, the mix has never been easier to work with! Then suddenly, the admixture dosing equipment starts to clog. Bad goes to worse when someone sends word that there are no more drums of MCI® admixture onsite to finish the batch even if the dosing equipment were fixed. Fortunately, this nightmare does not have to come true thanks to a simple backup plan of MCI® Grenades.

A Powerful Dose of Migrating Corrosion Inhibitors
MCI® Grenades are pre-packaged water-soluble pouches of MCI®-2006 NS that can easily replace MCI®
®-2005 NS liquid admixtures if needed. MCI® Grenades are extremely convenient, pre-dosed to treat one cubic yard of concrete per bag (one cubic meter per Metric MCI® Grenade). As Jon Connealy, Regional Sales Manager for MCI® Central and one of ICRI’s 2020 “40 under 40,” explained, “Simply toss one grenade into your concrete truck per yard of concrete enclosed and your concrete will have all of the migrating corrosion inhibitors needed.” This serves as an affordable backup plan for ready-mix providers who must always be on guard for unexpected liquid admixture dosing challenges that could devastate an already stressful situation.

MCI® Admixture ‘Insurance Plan’ in Action
Connealy shared a case in point of how one ready-mix provider wisely prepared for a worst-case scenario after falling short for another. In the summer of 2021, the ready-mix provider was in the middle of a batching job when realization hit that there was not enough MCI®-2005 NS to complete it. Additional MCI®-2005 NS would not arrive for a week. Earlier in the year, the ready-mixer’s dispensing unit pump had become blocked with foreign materials and delayed the project for both the ready-mixer and the contractor. As a result, the ready-mix provider had stocked MCI®-2006 NS (approved by the engineer) as a backup supply in case the problem happened again. When the summer batching shortage hit, the crew was able to carry on with MCI®-2006 NS while waiting for the rest of the MCI®-2005 NS to arrive. As Connealy noted, “This ‘insurance plan’ saved them and the
contractor serious delays for the job.”

Convenient Options for Best-Case Scenarios
Worst-case scenarios aside, MCI® Grenades are a convenient option for contractors even when nothing is going wrong. MCI® Grenades are easy to work with for small jobs. They can be added onsite and safely handled despite their high pH since they are packaged in watersoluble film that does not dissolve until mixed with water. Furthermore, MCI® Grenades make MCI® admixtures accessible to all contractors—even if not ready-mix suppliers—who can simply calculate the right number of MCI® Grenades to toss into the concrete batch at the jobsite to get corrosion protection and extend service life.

Be Prepared with an MCI® Grenade™ ‘Insurance Policy’
While unexpected MCI® supply and dosing equipment problems can happen, they do not have to be added to the already stressful task of achieving a good concrete pour. By simply keeping a backup supply of MCI® Grenades on hand for unpredictable problems, concrete suppliers and contractors can make sure they do not end up in a ready-mix nightmare. Contact us to order your MCI® Grenades today:

Keywords: ready mix suppliers, concrete admixtures, concrete corrosion inhibitors, Cortec, MCI, Migrating Corrosion Inhibitors, extend service life, ready mix problems, concrete contractors, MCI Grenade, supply shortage

Need a High-Resolution Photo? Visit:

For a PDF version please click here.

PRESS RELEASE: World’s First Biobased Corrosion Inhibiting Admixture for Concrete Receives CE Certificate!

Cortec® Corporation is proud to announce that its MCI®-2005 is the first biobased, organic, corrosion inhibiting concrete admixture, that received CE Certificate. CE marking is a certification that indicates conformity with health, safety, and environmental protection standards for products sold within the European Economic Area (EEA). The CE marking is also found on products sold outside EEA that are manufactured in, or designed to be sold in the EEA. This makes the CE marking recognizable worldwide even to people who are not familiar with the European Economic Area. CE certificate was issued by IGH Institute, a Croatian company active in civil engineering professional services and scientific research. This leading design, consulting and research institution is dedicated to research and development in civil engineering. Their laboratories are accredited for 600 test methods. IGH conducted extensive testing for MCI® 2005 before issuing the certificate. Cortec® has gone to great lengths to make the CE certification of MCI® products a reality. MCI® 2005 is available in Europe from Cortec’s manufacturing facility in Split, Croatia. Excellent location in the city’s harbor enables the product to be manufactured and shipped in record time throughout Europe and further. 

MCI®-2005 is an organic, biobased corrosion inhibitor for protection of metallic reinforcement in concrete structures. It contains a blend of amine salts of carboxylic acids. Unlike calcium nitrite admixtures, which have a set accelerating effect that can send workers scrambling or cause early setup problems, MCI®- 2005 delays set time, making the concrete easier to work with and reducing the heat of hydration. Other advantages are that MCI®-2005 contains 67% USDA certified biobased content and is certified to meet ANSI/NSF Standard 61 for use in large potable water structures. Considering that durability of concrete structures is one of the biggest issues in construction industry today, this is an excellent achievement to help for engineers in maintaining sustainability. Durability can be greatly extended with careful technical approach.

Application of MCI® technology is one of the most efficient methods on the market for extending durability of structures by preventing corrosion of metallic reinforcement in concrete. Corrosion is deterioration of materials over time. It causes serious damage to metal products in concrete structures which can result in huge safety hazard. This is why the development and selection of corrosion inhibiting admixtures requires very serious approach. Structures protected with MCI® will have a stronger resistance to corrosion and therefore significantly longer durability.

MCI ®2005 was used The Kinnet tunnel was designed to collect flood water from the entire Arava region and the city of Eilat, Israel. It was constructed in a highly aggressive environment with sulphate-rich ground and extremely hot weather conditions.The project needed to meet requirements for an exposure level set to XA-3 (harsh soil aggressiveness) according to Table One of EN-206-1 (Exposure Level 11 according to the equivalent Israeli standard IS-118). A ‘Performance-Related Design Method’ was chosen as the best solution to meet the requirements set by the high exposure level and project conditions. A corrosion inhibiting admixture, MCI-2005, was specified as the performance design principal, used with C35/45 concrete comprising CEM-III/B sulphate-resistant cement (according to Table-One of EN-197-1 and its Israeli equivalent Table-One of IS-1). This combination was designed to inhibit corrosion at the level of the rebar; reduce autogenous, plastic, and thermal cracking; and withstand sulphate attack throughout the tunnel’s service life.

MCI® 2005 is produced in CorteCros®, a member of the Cortec® Corporation group. CorteCros has recently expanded its production facility and
storage capacity in Split. This is now Europe’s main production and distribution point for Cortec’s corrosion protection chemistries. In addition to
manufacturing and testing, CorteCros® provides integrated solutions and full technical support for Cortec’s products and services. Newly equipped
ASTM and ISO certified laboratory is also located in the logistics center in Split. All products are registered according to the REACH standard.

You can learn more about MCI®-2005 admixture here:

Need a High-Resolution Photo? Visit:

For a PDF version please click here.

PRESS RELEASE: Cortec® Awarded Patent for Innovative Fire Sprinkler Corrosion Mitigation Technology!

Cortec® is pleased to announce its newest US patent for corrosion mitigation inside dry sprinkler systems!
While sprinklers are designed to fight fire, they themselves are at elevated risk for corrosion during their service life. Sprinkler corrosion problems are serious enough that National Fire Protection Agency (NFPA) standards for sprinklers call for corrosion risk evaluation at installation and periodic corrosion monitoring thereafter.* Cortec
® has developed its patented sprinkler protection process as a simple, cost-effective solution to this problem.

A Practical Solution for Hard-to-Reach Void Spaces
Cortec’s patent covers a comprehensive system of protection that relies on Vapor phase Corrosion Inhibitors (VpCI® or VCI). This technology does not require the direct application of the corrosion inhibitors to every metal surface that needs protection. Rather, the vapor pressure of the corrosion inhibitors, delivered in powder or fluid form, will allow them to vaporize and disperse throughout the piping voids to access even difficult to reach spaces. Vapor phase Corrosion Inhibitors are attracted to metal surfaces, where they adsorb in a protective layer that interferes with the normal corrosion reaction fostered by the presence of oxygen and an electrolyte (e.g., residual water). These Vapor phase Corrosion Inhibitors are able to work in both the liquid phase and the vapor phase, allowing them to protect both wet and dry surfaces within the pipe.

Customizable Application Options
At least two methods of Vapor phase Corrosion Inhibitor application exist. One option is to use VpCI® fogging fluid to deliver the corrosion inhibitors immediately through the dry pipes. The other employs more gradual vapor dispersion by placing dry Vapor phase Corrosion Inhibitors in a housing connected to a pressurized air system that constantly circulates the protective vapors through the piping. This comprehensive system also includes efficacy monitoring methods such as corrosion coupons or sensors.

Benefits of Cortec® Patented Fire Sprinkler Protection
The primary benefit of Cortec’s fire sprinkler protection system is the mitigation of corrosion inside dry sprinkler pipes, helping the sprinklers last longer with less likelihood of failure. This significantly reduces the risk of leakage and clogging due to corrosion, in turn reducing the need for expensive and time-consuming repairs or pipe replacements. At the same time, the system is easy to install, requires little to no maintenance, and is economical and effective. These benefits are a huge advantage over traditional nitrogen purge, which can be expensive and difficult to maintain, and for which failure is not uncommon.

Another Example of Corrosion Technology Leadership
Cortec® strives to be a leader in developing practical solutions for corrosion needs in all industries. This fire sprinkler corrosion mitigation system is an excellent example of how Cortec® has provided a cost-effective, comprehensive, groundbreaking solution that departs from the status quo. It is an important technology to consider as an effective alternative to traditional protection processes that can easily fail or be difficult to maintain. Contact Cortec® to learn more about this exciting cost-effective sprinkler maintenance technology:

Keywords: fire sprinkler corrosion, US patents, Cortec, corrosion mitigation, fire sprinklers, fire sprinkler protection, NFPA, National Fire Protection Agency, fire sprinkler maintenance, nitrogen purge alternatives

For a PDF version please click here.

MCI® Technology Applied on Peljesac Bridge Providing Road Link Between Two Parts of the Country!

Ranking among the most demanding bridges in the world—not only in terms of complexity of construction but also in a complex design—2,404-m (7,887.14-ft) long, Peljesac bridge is one of the most important and largest infrastructure project in Europe. Connecting Croatia’s Peljesac peninsula with the mainland to bypass a short stretch of the Bosnia and Herzegovina coastline started three years ago.

The project is worth 550 Million Euros, although most of the funding came from the European Union. ln order to meet the main criteria of quality design, such as stability, durability, economy, and integration into the environment, the inventive design proposed the construction of an extra dosed bridge with an integrated hybrid structure comprising of five central spans, each 285-m long, and six low pylons. Especially careful approach was taken to ensure durability for the extended lifespan of over 130 years.

Cortec’s MCI® 2018 was specified on this project during the design phase as a silane-based impregnation with a migrating inhibitor property to protect against the harmful effects of corrosion, thus extending the service life of the bridge. MCI® 2018 is a 100% silane-based concrete sealer containing migrating corrosion inhibitors that allows deep penetration into concrete and provides water repellence by chemically reacting with the cementitious
substrate. It seals surface pores, preventing the intrusion of chlorides, reduces carbonation, and protects from the ingress of wind-driven rain. Treated concrete surfaces are fully breathable and their natural moisture-vapor transmission is not affected. After repair of surface damage and cleaning of discolorations and other surface defects, the concrete surface of the pylons needed to be protected with a colorless silane coating to improve durability and increase the resistance of the concrete surface to long-term external influences. MCI®-2018 carries CE certification that indicates conformity with health, safety and environmental protection standards for products sold within the European Economic Area (EEA).

Application of MCI®-2018

A combination of AC coatings, cathodic protection of steel reinforcement in piles and pile heads, a concrete cover of 65– 85 mm stainless steel reinforcement and impregnation of all concrete surfaces with MCI®-2018 was chosen as the strategy to help the bridge achieve a 130-year service life. MCI®-2018 was applied on the entire substructure of the bridge. All concrete parts were coated with MCI®-2018 by a spraying technique. The work was performed in accordance with the project requirements and after surface preparation to full functionality. This included:

  •  Access to pylons
  •  Rehabilitation of the concrete surface of the pylons
  •  Cleaning the concrete surface of the pylon (washing the pillars with water)
  •  Impregnation of the concrete surface of the pylon with MCI®-2018.

MCI®-2018 contains time-proven Migrating Corrosion Inhibitors (MCI®). The silane component provides water repellency by chemically reacting with the cementitious substrate under proper application, decreasing the ingress of aggressive materials. The product penetrates deep into concrete, providing corrosion protection to reinforcing steel from existing water and chloride ions, or other contaminants. For the Peljesac bridge, continuous monitoring of the condition of the structure at one central place will be done during the construction phase and the exploitation phase to examine parameters of structural behavior, time, seismic activity, and structural durability. The designer of the bridge specified corrosion protection for all concrete segments in order to achieve a 130-year service life. After completion, the Peljesac Bridge will be ranked among the five largest and most attractive European bridges, constructed at the beginning of 21st century. This important new structure is connecting two separate parts of Croatia and bypassing border crossings at the short coastal strip near Neum in Bosnia and Herzegovina. 

Cortec’s CEO, Boris Miksic, Croatian-American businessman is proud that his patented technology was used on this historic project to connect two parts of his country. “Our MCI® technology is used in largest construction projects throughout the globe. I dedicated more than forty years of my life in
developing most advanced, environmentally safe corrosion protection solutions. Witnessing its application in my home country on this monumental bridge structure is truly a special feeling. Croatia has gone through some tough times, having to fight its independence in a war 30 years ago. Seeing it
prosper and develop in of the most desirable countries in Europe feels just about right and completion of Peljesac bridge is huge step forward for all of us.”

You can learn more about Migrating Corrosion Inhibitors (MCI®) here

Need a High-Resolution Photo? Visit:

For a PDF version please click here.

Biobased Organic Admixture for Protection of Metallic Reinforcement in Concrete Structures

concrete admixtures, corrosion inhibiting admixtures, concrete durability, MCI, Migrating Corrosion Inhibitors, ASTM G180, ISO 17025, Cortec, concrete service life

MCI®-2005 Passes ASTM G180 Testing for Corrosion Inhibiting Admixtures!

November 18, 2021

Cortec® Corporation is proud to announce that its MCI®-2005 is the first biobased, organic corrosion inhibiting concrete admixture that passes the ASTM G180 protocol under ISO 17025 accredited testing.

Without a doubt, durability of concrete structures is one of the biggest issues concerning engineers today. This unfortunately has been evidenced in recent tragedies such as the collapse of a residential building in Florida and the Morandi bridge in Italy. Maintenance and structural durability are essential to avoid fatal accidents like these. Durability can be greatly extended with a careful technical approach whether dealing with new or existing construction. Corrosion is the deterioration of materials over time. It is a serious problem for engineers who use metal products in their structures, because it can be a major safety hazard. Corrosion of metal reinforcement is a critical risk factor for the durability of structures, and as such, the development and selection of corrosion inhibiting admixtures has to be taken seriously. One of the most efficient methods to extend service life of structures is by using MCI® Technology, which has proven efficiency even in severely corrosive environments. Structures protected with MCI® will have a stronger resistance to corrosion and therefore longer durability.

MCI®-2005 is an organic, biobased corrosion inhibitor for protection of metallic reinforcement in concrete structures. It contains a blend of amine salts of carboxylic acids. Unlike calcium nitrite admixtures, which have a set accelerating effect that can send workers scrambling or cause early setup problems, MCI®-2005 delays set time, making the concrete easier to work with and reducing the heat of hydration. Other advantages are that MCI®-2005 contains 67% USDA certified biobased content and is certified to meet ANSI/NSF Standard 61 for use in large potable water structures.

When incorporated into concrete, MCI®-2005 forms a protective molecular layer on embedded metals to inhibit corrosion. In new construction, this is quantified by an increase in critical chloride threshold and subsequent reduction in corrosion rates once corrosion initiates. When used with repair mortars and grouts, it is also able to migrate into undisturbed concrete adjacent to the repair to protect reinforcement already in place.

MCI®-2005 Successfully Passed ASTM G180 Testing

ASTM G180 Linear Polarization Curve for MCI®-2005

Cortec® Laboratories conducted ASTM G180, one of two corrosion performance tests specified in ASTM C1582, Standard Specification for Admixtures to Inhibit Chloride-Induced Corrosion of Reinforcing Steel in Concrete. This testing method is used to ensure admixtures measure up to widely accepted industry standards for the selection and qualification of corrosion inhibiting admixtures. Cortec® Laboratories provided the testing through its independent ISO 17025 accreditation. This test is important for a variety of reasons as it measures corrosion inhibition ability in chloride environments. Manufacturers use it to screen new chemistry formulations for their potential as corrosion inhibiting admixtures. Chemistries that pass ASTM G180 testing, which is conducted over the course of three days, have a strong vote of confidence for their corrosion inhibiting ability; whereas those that do not pass this quick test must undergo years of additional testing under ASTM G109. ASTM G180 is needed for quality assurance of existing products or as part of an audit like the one recently performed by Cortec® Laboratories on MCI®-2005 for Cortec® Middle East and Dubai Municipality. Finally, ASTM G180 testing is also critical for engineers working with DOTs who require corrosion inhibitors to pass ASTM C1582 before use on their projects.

You can learn more about MCI®-2005 admixture here:

Need a High-Resolution Photo?  Visit:

Cortec® Corporation is the global leader in innovative, environmentally responsible VpCI® and MCI® corrosion control technologies for Packaging, Metalworking, Construction, Electronics, Water Treatment, Oil & Gas, and other industries.  Our relentless dedication to sustainability, quality, service, and support is unmatched in the industry. Headquartered in St. Paul, Minnesota, Cortec® manufactures over 400 products distributed worldwide.  ISO 9001, ISO 14001:2004, & ISO 17025 Certified. Cortec Website: Phone: 1-800-426-7832   FAX: (651) 429-1122

For a PDF version please click here.

PRESS RELEASE: Get Ready for Winter PT Grouting Delays with MCI®-309!

October 27, 2021

For better or worse, winter is on its way to the Northern Hemisphere. It will soon be time to pull out warmer coats, hats, and boots and rev up the snowblower. On the jobsite, it will be time to face inconvenient winter construction delays, including grouting delays for PT (ing) projects as the temperatures drop too low. Since state and federal requirements typically call for corrosion inhibitor application if the waiting period is two weeks or longer, it is important to be ready with the best option on the market for PT grouting delays: MCI®-309!

Efficient Protection for PT Tendons
MCI®-309 from Cortec® Corporation is an extremely efficient method of protecting metals within an enclosed space. It comes in dry powder form and can easily be fogged through PT ducts with a low-pressure air hose before the duct is capped. Once applied, MCI®-309 vaporizes and travels throughout the PT duct, forming a protective molecular layer on the metal surfaces of the PT strands. This layer is self-replenishing if disturbed, as new protective vapor continuously redeposits on the surface. MCI®-309 is considered an ambiodic (mixed) inhibitor that protects at both the anode and cathode of a corrosion cell.

Why Choose MCI®-309?
There are several reasons MCI®-309 is ideal for PT grouting delays:
1) It reduces corrosion on PT tendons during a vulnerable pre-grouting period.
2) It is easy to apply. Little to no surface prep is required.
3) It protects hard to reach areas through vapor action.
4) It typically does not need to be flushed out prior to grouting, unlike oil-based inhibitors.

Another positive feature of MCI®-309 is that it does not contain silicates, phosphates, nitrites, or heavy metals. It does not increase the risk of hydrogen embrittlement for high tensile strength steel. Neither does it affect physical properties of concrete and grout (set time, strengths, etc.). Testing performed by American Engineering and Testing, Inc., confirmed that MCI®-309 does not affect strand pull-out strength compared to a control. Furthermore, an approximately year long test at the Pennsylvania State University Grouting Laboratory showed a positive reduction in corrosion on prestressing strands placed in PVC pipes containing a saltwater solution and treated with MCI®-309 (a worst-case scenario compared to dry conditions recommended for MCI®-309 PT duct application).

Recent Examples of MCI®-309
MCI®-309 has been used for winter grouting delays in recent bridge projects of note. The St. Croix River Crossing was a monumental bridge opened in 2017 to alleviate constricted traffic flow between Minnesota and Wisconsin. Due to its unique location in the St. Croix National Scenic Riverway, the bridge was made with a special extradosed design (combination box girder and cable stay bridge) to minimize the visual impact on the landscape. The pre-cast boxlike segments were connected by PT cables, which required corrosion protection during grouting delays in the notoriously harsh winter environment. MCI®-309 was chosen for the job.

MCI®-309 was also used during construction of the Samuel De Champlain Bridge, the world’s widest twoplane cable stay bridge and one of the largest infrastructure projects in North America to date. MCI®-309 was chosen for winter PT grouting delays on the main structure and has seen continued use in the Réseau Express Métropolitain light rail system segment of the project.

Do the Possible!
While it is impossible to stop the inevitable approach of winter and grouting delays, it is possible to minimize the negative effects by selecting an efficient method of corrosion protection. Contact Cortec® today to discuss MCI®-309 for easy PT strand protection in your next construction project:

Learn more about MCI®-309 here:

Need a High-Resolution Photo? Visit:

For a PDF version please click here.

PRESS RELEASE: Concrete Cleanup Time Is Here! Unleash the Power of Cortec® MCI® Bio-Enzyme Cleaners

concrete cleanup

Fall and spring are great times for outdoor cleanup. When it comes to concrete, this may involve removing unsightly stains made by oil spills or organic waste. While alkaline or harsh solvent-based cleaners have been the standard treatment, this is no longer necessary thanks to Cortec’s two MCI® biological cleaners that unleash the power of microorganisms to deepclean concrete stains!

MCI®-2061 and MCI®-2062 are two bio-enzymatic cleaners for general-purpose cleaning on concrete, asphalt, and other permeable surfaces. Both are formulated with biodegradable surfactants that lift and disperse the waste. Secondary cleaning action is due to preserved bacterial spores that germinate into active microorganisms when the cleaners are properly applied. These spores digest the waste materials and remain in the substrate after rinsing to continue degrading residual waste materials following the initial cleaning.

When dealing with stains made by hydrocarbons, MCI®-2061 is the cleaner of choice. MCI®-2061 contains
microorganisms specially suited to biodegrading a wide range of hydrocarbons, including (but not limited to) gasoline, diesel, crude oil, benzene, toluene, ethyl benzene, and xylene. It is an excellent option for any concrete surface regularly exposed to hydrocarbon materials:

• Parking garages
• Bridges
• Roads
• Gas stations
• Oil change bays
• Auto repair shops
• Petroleum processing plants
• Warehouses

When the stain is organic based, MCI®-2062 can be used. MCI®-2062 contains free enzymes and microorganisms capable of biodegrading a wide range of organic food waste—including grease, oil, protein, fat, starch, and other solid organic wastes—in order to leave facilities sparkling clean and odor free. This may be indoors on bathroom and kitchen floors or outdoors on grimy dumpster pads and on sidewalks stained with fallen leaves. Furthermore, MCI®-2062 can be used beyond basic surface cleaning activities to help with maintenance of grease traps, drains, and septic tanks. Potential users are countless:

• Restaurants
• Hotels
• Waste management facilities
• Organic waste treatment plants
• Building and ground maintenance crews
• Homeowner associations

In addition to their hydrocarbon and organic waste digestion power, MCI®-2061 and MCI®-2062 are great cleaning options because they reduce health and safety hazards compared to standard solvent or alkali-based cleaners. They reduce pollution liabilities and even remain active when rinsed away, continuing to work to purify the rinse water and downstream drain lines, sewer systems, grease traps, or holding tanks.

No time is a good time to have oil and organic waste spills soiling concrete surfaces, but now is a great time to unleash the deep-cleaning power of
®-2061 and MCI®-2062 on unsightly concrete stains! Contact the Cortec® MCI® team today for assistance:

Learn more about MCI®-2061 here:

Learn more about MCI®-2062 here:

Keywords: fall cleanup, spring cleaning, concrete stain remover, biological cleaning products, concrete maintenance, building management companies, Cortec, Cortec MCI, oil spill cleanup, hydrocarbon spill, green cleaning products, oil stains, grease stains, bio-enzymatic cleaners, septic maintenance, drain maintenance, grease trap maintenance

Need a High-Resolution Photo? Visit:

For a PDF version please click here.