Randomized trial shows improved corrosion resistance in concrete using sulfoaluminoferrite composite cement, indicating its potential for harsh environments.
Key Points
The aim of this research was to study the corrosion resistance of composite cement incorporating sulfoaluminoferrite clinker and additives.
Utilized Portland cement CEM 0 42.5N and sulfoaluminoferrite clinker produced by Oskolcement and Podolsk-Cement respectively.
Applied a 5% Na₂SO₄ solution to assess corrosion resistance using the corrosion resistance coefficient.
Conducted X-ray phase analysis to evaluate hydration and binding of calcium hydroxide during hydration.
Composite cement with sulfoaluminoferrite clinker reduced corrosion rate by 30% compared to standard Portland cement.
Resistance coefficient reached 1.18 after 6 months, indicating corrosion resistance.
Hydration in aggressive environments formed stable hydrate phases, enhancing durability.