Abstract:
This paper reports the results of experiments evaluating the corrosion resistance of a
mixture of limestone-clay (MLC) and perlite in concrete mixes. Variables were MLC and perlite
additions of 0–15% as cement replacement and cement contents. Electrochemical measurements
tests were used to monitor the corrosive behaviour of embedded steel bars in concretes. Results
showed that additions of MLC and perlite are effective in inhibiting corrosion of reinforcing bars.
The superior performance in inhibiting corrosion in reinforcing steel is attributable to the
densification of the cement-paste matrix due to pozzolanic action in the additives concrete mixes.
