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A platform for research: civil engineering, architecture and urbanism
Effects of nano-SiO2 particles on the mechanical and microstructural properties of ultra-high performance cementitious composites
Abstract In this research the effects of nano-SiO2 particles on the mechanical performance, hydration process and microstructure evolution of ultra-high performance cementitious composites were investigated by different methods. The results showed that the compressive and flexural strength increased with the increase of the nano-SiO2 content up to 3% and due to agglomeration of nano-SiO2 particles, the mechanical properties decreased slightly when the nano-SiO2 content was more than 3%. The hydration process was accelerated by the addition of nano-SiO2. The porosity and the average pore diameter decreased with the increase of the nano-SiO2 content and aging. The microstructure was more homogenous and dense for nano-SiO2 specimens as compared to the control specimen. All of these improvements could be mainly attributed to the pozzolanic and filler effects of nano-SiO2.
Effects of nano-SiO2 particles on the mechanical and microstructural properties of ultra-high performance cementitious composites
Abstract In this research the effects of nano-SiO2 particles on the mechanical performance, hydration process and microstructure evolution of ultra-high performance cementitious composites were investigated by different methods. The results showed that the compressive and flexural strength increased with the increase of the nano-SiO2 content up to 3% and due to agglomeration of nano-SiO2 particles, the mechanical properties decreased slightly when the nano-SiO2 content was more than 3%. The hydration process was accelerated by the addition of nano-SiO2. The porosity and the average pore diameter decreased with the increase of the nano-SiO2 content and aging. The microstructure was more homogenous and dense for nano-SiO2 specimens as compared to the control specimen. All of these improvements could be mainly attributed to the pozzolanic and filler effects of nano-SiO2.
Effects of nano-SiO2 particles on the mechanical and microstructural properties of ultra-high performance cementitious composites
Rong, Zhidan (author) / Sun, Wei (author) / Xiao, Haijun (author) / Jiang, Guang (author)
Cement and Concrete Composites ; 56 ; 25-31
2014-11-02
7 pages
Article (Journal)
Electronic Resource
English
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