Test Results

Corrosion Potential of CSA Cement: Final Test Report

Akzo Nobel Functional Chemicals, a worldwide supplier of chemicals and construction products additives, recently ran a comparative study of the corrosion potential of cement used in stucco and plaster applications. The products tested included Rapid Set Eisenwall Cement, Type II/V Portland Cement, Type II/V Portland Cement with Type S Lime, and Plastic Cement. These cement materials are commonly used in the United States housing market for conventional three-coat stucco.

The testing was completed at the Akzo Nobel Functional Chemicals laboratory in Frankfurt, Germany. The laboratory in Frankfurt has developed a method of analyzing the corrosion activity of steel reinforcement embedded inside a mortar/stucco specimen comprised of the cement sample materials. Corrosion of reinforcing steel in cement is caused by environmental effects such as water and moisture intrusion. The corrosion study measured how well each cement material prevented corrosion.

Akzo Nobel Functional Chemicals’ test method is designed for small-scale, long-term investigation in a laboratory setting. The specimens were made with a single piece of reinforcing steel positioned in the middle of the specimen. The test method was created based on the field experience of the Swiss Society of Corrosion located in Zurich, Switzerland. The Swiss test correlated this laboratory technique with real world environmental corrosion studies on bridges and tunnels in Switzerland.

At the conclusion of the test, it was found that Eisenwall Cement using Rapid Set Cement technology has significantly lower corrosion potential when compared to Portland Cement, Portland Cement with Lime and Plastic Cement. Furthermore, Eisenwall specimens were the only mix design that showed no cracking in the corrosion study.  Click on the Download PDF button for the final test results.

Download PDF