Strength and microstructure development of high-strength high-volume slag blended cement mortars with limestone powder and silica fume

초록

This study investigated the rheology, strength development, porosity and pore size distribution of high-strength mortars with the water-to-binder ratio of 20%, 50 to 80% GGBFS, up to 20% limestone powder, and up to 10% silica fume. According to test results, compared with the Portland cement mixture, the high-volume GGBFS mixture had much higher flow due to the low surface friction of GGBFS particles and higher strength in the early age due to the accelerated cement hydration by increase of free water