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- W3186071242 abstract "Two types of nano-silica with specific surface areas of 100 m2/g (NS-100) and 470 m2/g (NS-470) were used to investigate the effect of the specific surface area on the properties of cement paste. The mercury intrusion porosimetry results show that NS-470 nano-silica is more effective in improving the pore structure, which mainly reduces the gel pores and large pores. The attenuated-total-reflection spectrums illustrate that NS-470 nano-silica can be covered with more Si-OH groups, leading to the higher reactivity to accelerate the hydration reaction. The calorimetry results indicate that NS-470 nano-silica can more effectively prolong the acceleration period, and increase the exothermic rate and late hydration degree. The hydration kinetics simulation indicates that NS-470 nano-silica makes the hydration reaction quickly enter the diffusion stage. Based on the results of microanalysis, the mechanism of how the specific surface area influences the function of nano-silica in cement paste is proposed." @default.
- W3186071242 created "2021-08-02" @default.
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- W3186071242 date "2021-11-01" @default.
- W3186071242 modified "2023-10-15" @default.
- W3186071242 title "Effect of the specific surface area of nano-silica particle on the properties of cement paste" @default.
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- W3186071242 doi "https://doi.org/10.1016/j.powtec.2021.07.045" @default.
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