Influence of limestone addition on sodium sulphate activated blast furnace slag cements

The effect of limestone replacement in the reaction and phase assemblage evolution two sodium sulfate activated slag cements was investigated. composition its reactivity influenced kinetics these materials. Paste with addition exhibited an acceleration kinetics, particularly for slowly reacting slags. Ettringite aluminium substituted calcium silicate hydrate were identified as main products cements, independently type or level. No significant changes assemblages observed over 365 days testing; however, composite increased compressive strength, consistent a refined pore structure. These results indicate that it is possible to partially replace by without changing forming systems, while also increasing strength achieving similar