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: Limestone
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 […]
The binary cement, e.g. Portland cement blends with slag or fly ash or limestone, has gained great popularity in many countries. However, each kind of binary cement has its own shortfalls, e.g. the addition limestone can reduce the later strength due to its dilution effect, while the reaction of slag is relatively slow in the […]