Research on the Efficient Application of Silica Fume in High-Tech Cement-Based Materials

Abstract:

The comparison experiments are carried out at different silica fume dosage between the silica fume with pre-treatment and the silica fume without pre-treatment. The results show that the pre-treatment of silica fume improved the strength greatly and the silica fume dosage corresponding to the strength peak somewhat moved forward from 0.20 for the cement-based materials with pre-treatment of silica fume to 0.21 for the cement-based materials without pre-treatment of silica fume. The particles distribution experiment results indicate that after the pre-treatment of silica fume, the average particle diameter of silica fume reduced from 2.865μｍto 0.151μｍ. Based on Aim-Goff model, it is concluded that the increase in the compressive strength and flextural strength of cement-based materials with pre-treatment of silica fume, are attributed to the dispersion of silica fume agglomeration and the increase in the packing density of the cement-based materials.

• Periodical: Advanced Materials Research (Volumes 374-377)
• Pages: 1537-1540
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.374-377.1537
• Online since: October 2011
• Authors: Dong Lin, Zi Yun Wen
• Keywords: Disperse, High-Tech Cement-Based Materials, Packing Density, Pre-Treatment, Silica Fume (SF), Strength

References

[1] Tang Ming, Heng Jing: Journal of Shenyang Architectural and Civil Engineering Institute. 2005 (11), p.516~520 (in Chinese).

[2] Wen Ziyun, Qian Chunxiang:Concrete Engineering and Technology(Wuhan University of Technology Publication, Wuhan 2004)(in Chinese).

[3] Sun Zengzhi, Shen Aiqin: Highway, 2005 (9),p.143~149(in Chinese).

[4] Wang Dongmin, Chen Liangcheng, in: Proceedings of the 9th National Cement and Concrete Chemistry and Application Conference,2005(in Chinese).

[5] Hu Jihua:Colloid and interface chemitry (South China University of Technology Press, Guangzhou 1997)(in Chinese).

[6] Ouyang Dong: Architecture technology 2001(1),pp.24-26 (in Chinese).