The reaction between metakaolin and limestone and its effect in porosity refinement and mechanical properties

In limestone calcined clay cements (LC3), more hemicarboaluminate and monocarboaluminate is observed, as compared to other blended cements, from the reaction of metakaolin with limestone. this study, it shown that formation these carboaluminate phases, predominantly occurs during a “third” hydration peak, after main alite aluminate peaks. The influence content, level sulfate addition water binder ratio on position magnitude peak were investigated. This precipitation hemi has significant effect porosity refinement strength development. It was also observed alumina can contribute ettringite if sufficient available.