Skip to main content
×
×
Home

Performance of Cement Systems with Nano-SiO2 Particles Produced Using Sol-gel Method

  • Konstantin Sobolev (a1), Ismael Flores (a1), Leticia M. Torres (a2), Enrique L. Cuellar (a3), Pedro L. Valdez (a2) and Elvira Zarazua (a2)...
Abstract

The reported research examines the effect of 5–70 nm SiO2 nanoparticles on the mechani-cal properties of nanocement materials. The strength development of portland cement with nano-SiO2 and superplasticizing admixture is investigated. Experimental results demonstrate an in-crease in the compressive strength of mortars with SiO2nanoparticles. The distribution of nano-SiO2 particles within the cement paste plays an essential role and governs the overall perfor-mance of these products. Therefore, the addition of a superplasticizer is proposed to facilitate the distribution of nano-SiO2 particles. The application of effective superplasticizer and high-speed dispergation are found to be very effective dispersion techniques that improve the strength of su-perplasticized portland cement mortars, reaching up to 63.9 MPa and 95.9 MPa after aging dur-ing 1 and 28 days, respectively. These values compare favorably with the observed compressive strengths of reference portland cement mortars of 53.3 MPa and 86.1 MPa. It is concluded that the effective dispersion of nanoparticles is essential to obtain the composite materials with im-proved performance.

Copyright
References
Hide All
1. SPRUGann, D. Gann, D., University of Sussex, 2002.
2. Trtik, P., Bartos, P.J.M, Proceeding of the 2nd Anna Maria Workshop: Cement & Concrete: Trends & Challenges, 2001, pp. 109120.
3. Sobolev, K.. Progress report, CONACYT, Mexico, 2006.
4. Sobolev, K., Ferrada-Gutiérrez, M. American Ceramic Society Bulletin, No. 10, 2005, pp. 1417.
5. Sobolev, K., Ferrada-Gutiérrez, M. American Ceramic Society Bulletin, No. 11, 2005, pp. 1619.
6. Plassard, C., Ultramicroscopy, Vol. 100, No. 3–4, 2004, pp. 331338.
7. Super-Hydrophilic Photocatalyst and Its Applications http://www.toto.co.jp Accessed June 15, 2008.
8. Pilkington Activ™ - Self-cleaning Glass, http://www.pilkington.com Accessed June 15, 2008.
9. Watanabe, T. US Patent 6294247, 2001.
10. Roco, M.C., Williams, R.S., Alivisatos, P.. IWGN Report on Nanotechnology Research Di-rections, National Science and Technology Council, Committee on Technology, 1999.
11. Scottish Centre for Nanotechnology in Construction Materials, www.nanocom.org Ac-cessed June 15, 2008.
12. Corradi, M. Concrete International 26, No. 8, 2004, pp. 123126.
13. Collepardi, M.. In: Proceedings of the International Conference - Challenges in Concrete Construction - Innovations and Developments in Concrete Materials and Construction, Dundee, UK, 2002, pp. 473483.
14. Collepardi, Proceedings of 8th CANMET/ ACI International Conference on Fly Ash, Silica Fume, Slag and Natural Pozzolans in Concrete, SP-221, Las Vegas, USA, 2004, pp. 495506.
15.Li, H.: Composites: Part B, No. 35, 2004, pp. 185189.
16. Li, G., Cement and Concrete Research, No. 34, 2004, pp. 10431049.
17. Bhushan, B. Handbook of Nanotechnology, Springer, 2004.
18. Wilson, M. Chapman & Hall/CRC, 2000.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×