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Article

Study on the Mechanism of Nano-SiO2 for Improving the Properties of Cement-Based Soil Stabilizer

by 1,2,3, 1,2,3,4,*, 5, 3, 5, 1,2 and 3
1
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
2
University of Chinese Academy of Sciences, Beijing 100049, China
3
Research Center on Soil & Water Conservation, Ministry of Water Resources, Yangling 712100, China
4
Institute of Soil and Water Conservation, Northwest Agriculture and Forestry University, Yangling 712100, China
5
College of Water Resources and Architectural Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(3), 405; https://doi.org/10.3390/nano10030405
Received: 11 February 2020 / Revised: 19 February 2020 / Accepted: 21 February 2020 / Published: 25 February 2020
(This article belongs to the Special Issue Nano-Hybrids: Synthesis, Characterization and Applications)
A new nano-soil stabilizer (N-MBER, Nanometer Material Becoming Earth into Rock) material was developed in this research by using the high activity and ultrafine properties of nano-SiO2 (NS), which were able to improve the properties of cement-based soil stabilizer and had broad application prospects. The results showed that (1) the strength of N-MBER obeyed a compound function relation with curing period and additive amount of NS. The relationship between strength and curing period obeyed an exponential function when the additive amount was constant. The strength and additive amount were a power function when the curing period was fixed. The compressive strength of N-MBER increased by more than 15% compared with MBER at day 28 of the curing period, and 50% compared with grade 32.5 cement. (2) The pozzolanic catalytic activity of NS significantly increased the amount of calcium silicate hydrate gel (C–S–H) in the N-MBER colloid. NS was also able to make the distribution of the network structure of colloidal space more uniform and improved the fractal dimension of particles by 0.05. The above results provide theoretical data for exploring the mechanism of soil stabilizer strength growth and for promoting the application of solid waste utilization. View Full-Text
Keywords: nano-SiO2; soil stabilizer; cement mortars test; hydration reaction; fractal feature nano-SiO2; soil stabilizer; cement mortars test; hydration reaction; fractal feature
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MDPI and ACS Style

Zhang, X.; Gao, J.; Fan, H.; Li, X.; Gao, Z.; Xue, L.; Sun, S. Study on the Mechanism of Nano-SiO2 for Improving the Properties of Cement-Based Soil Stabilizer. Nanomaterials 2020, 10, 405. https://doi.org/10.3390/nano10030405

AMA Style

Zhang X, Gao J, Fan H, Li X, Gao Z, Xue L, Sun S. Study on the Mechanism of Nano-SiO2 for Improving the Properties of Cement-Based Soil Stabilizer. Nanomaterials. 2020; 10(3):405. https://doi.org/10.3390/nano10030405

Chicago/Turabian Style

Zhang, Xingchen, Jianen Gao, Henghui Fan, Xinghua Li, Zhe Gao, Li Xue, and Shengli Sun. 2020. "Study on the Mechanism of Nano-SiO2 for Improving the Properties of Cement-Based Soil Stabilizer" Nanomaterials 10, no. 3: 405. https://doi.org/10.3390/nano10030405

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