Modern experiment methods to verify the efficiency of using mineral admixtures in cementitious material of hardened cement applied for concrete of marine structures

Abstract

An experimental study using modern experiment methods for the cement specimens incorporating 0% fly ash+0% silica fume-F0S0, 30% fly ash+0% silica fume-F30S0, 25% fly ash+5% silica fume-F25S5, 20% ash fly+10% silica fume-F20S10, 15% fly ash+15% silica fume-F15S15 was reported. Results confirmed that the specimens with the replacement fly ash and silica fume showed the helpful transformation of hydration products and a good improvement of microstructure on hardened cement. This is due to the reduction of calcium hydroxide and the increase of secondary CSH in the cement matrix from the pozzolanic reaction of a mineral admixture. The result of the study with modern experiment methods confirmed the improvement of strength and durability for hardened cement using mineral admixture, thereby ensuring the good applicability of the additional admixtures used in concrete of marine structures.