The hydration rate of C3S is accelerated in the presence of limestone probably because of the dilute effect and the multiplied nucleation sites. Jean Pera et al. reported that the total heat resulting from pure C3S hydration was 145 joules while that of the mixture (50%C3S+50%CaCO3) reached 260 joules. Ramachandran’s investigation showed that some calcium […]
Tag: Clinker
Effects of limestone addition on the hydration of limestone blended cement can be classified into two aspects, viz. physical effects and chemical effects. Numerous researchers who investigated Portland limestone cement with high level of calcite addition regard it as inert filler, e. g. by means of both thermal and BSE image analysis, it was investigated […]
Limestone has been utilized as a mineral addition in cement industry for a long time. The latest European Standard (EN 197-1-2000) allows up to 5% limestone as a minor additional constituent, and also identifies four types of Portland limestone cement containing 6-20% limestone (types II/A-L and II/A-LL) and 21-35% limestone (types II/B-L and II/B-LL), respectively. […]