Nano-SiO2-Engineered Cementitious Composites
Nano-SiO2 particles with pozzolanic activity are introduced into different types of cementitious composites to reinforce/modify their properties/performances. The effects and their mechanisms of nano-SiO2 on the rheology, mechanical properties/performances, and durability of cementitious composites are investigated through performance, thermogravimetry, X-ray diffraction, nuclear magnetic resonance, scanning electron microscope, and electrical resistivity tests. Experimental results show that the inclusion of nano-SiO2 brings obvious impact on the properties/performances of fresh and hardened cementitious composites due to its pozzolanic activity in combination with small-size, nucleation, and filling effects.
KeywordsNano-SiO2 Cementitious composites Rheology, mechanical properties Durability Mechanisms
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