2 research outputs found
Correction to: Response Surface Analysis of the Corrosion Effect of Metakaolin in Reinforced Concrete
Response Surface Analysis of the Corrosion Effect of Metakaolin in Reinforced Concrete
Concrete is one of the most utilized construction materials. The use of
sustainable cementitious material is one of the new trends in concrete
technology. Several cementitious materials have been used as partial and full
replacement for cement in concrete. These materials have been used in a bid
to improve sustainability and reduce production cost. However, the corrosion
effect of these materials has been neglected. The experimental research
assessed the corrosion effect of metakaolin on some samples of concrete. This
was achieved by evaluating the concrete pore solution. The metakaolin was
used as a partial replacement for cement at 0, 10, 20, and 30% replacement
which gave the optimum mechanical strength. The concrete pore was
extracted through mechanical means. The inhibition efficiency of metakaolin in
concrete production was assessed using the and weight loss method by
inserting the mild steel in artificial concrete pore solution. A reduction in the corrosion rate was observed at higher percentage addition of metakaolin
which signifies an improvement in the inhibition of the developed concrete
The relationship between the observed parameters was evaluated using
response surface methodology. The result of the analysis showed that a unit
increase in time would cause a 0.03 increase in the corrosion rate. Additionally,
a unit increase in the temperature will have a 0.065 positive effect on the
corrosion rate of mild steel. The R2 value showed that about 89.7% variation in
the corrosion rate was accounted for by the effect of the independent variable
(time, temperature and metakaolin). The outcome of this research will serve as
a guide for construction workers, engineers and other researchers on the
corrosion effect of this sustainable supplementary material in concrete
technology towards the design and construction of sustainable concrete
infrastructure