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A Study on the Microstructure of the Nano Concrete Composite Materials

Published online by Cambridge University Press:  01 February 2011

Ping-Kun Changa ,
Wei-Ming Houb  and
Chao-Lung Hwang
Ping-Kun Changa
Affiliation:
Department of Civil Engineering, Vanung University Chungli 320, Taiwan R.O.C
Wei-Ming Houb
Affiliation:
Department of Construction Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan R.O.C
Chao-Lung Hwang
Affiliation:
Department of Construction Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan R.O.C
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Abstract

This study applies NMR, SRA, MIP, SEM and electric resistance tests to examine the microstructure of the composite materials of nano concrete. The test results show that owing to the pozzolanic reaction activated by the nanopowders, the CaOH2 content within the composite materials is decreasing, filling the capillary and gel pores. This way, the microstructure of the composite materials is transformed in its arrangement, which makes concrete much more well-mixed and densified, enhancing the compressive strength. The permeability is cut down as well. In conclusion, it ends in much better durability.

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References

5. References

1. Nanostructure Science and Technology Panel Report, A Worldwide Study Prepared under the guidance of the IWGN, NSTC, National Science and Technology Council (NSTC) Committee on Technology, The Interagency Working Group on NanoScience, Engineering and Technology (IWGN), Kluwer Academic Publisher, l999, ISBN 0–7923–5854–6.Google Scholar
2. Justnes, H., Meland, I., Bjorgum, J. O., and Krane, J., A 29Si MAS NMR study of the pozzolanic activity of condensed silica fume and the hydration of Di and tricalcium silicates, SINTEF PCB Report, Norway, 1–26(1990)Google Scholar
3. Hanehara, Shunsuke, Tomosawa, Fuminori, Kawa, Makoto Kobaya, Hwang, Kwang Ryul, Effects of water/powder ratio, mixing ratio of fly ash, and curing temperature on pozzolanic reaction of fly ash in cement paste, Cem. Concr. Res. 31 (2001) 31–39.Google Scholar
4. Chang, P.K., Hwang, C.L., Peng, Y.N., Application of high performance concrete to high rise building in Taiwan, Adv in Struc. Eng, 4(2)(2001) 65–73.Google Scholar
5. Mindess, S., Young, J.F., Concrete, Prentice-Hall, New Jersey 1993.Google Scholar
6. Mehta, P.K., Monteiro, P.J.M., Concrete-Structure, Properties, and Materials, 2nd, Prentice-Hall New Jersey 1993.Google Scholar
7. Malhotra, V.M., Fly ash, slag, silica fume, and rice-husk ash in concrete a review, Concr. Int. 15 (1993) 73–76.Google Scholar