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Paper Titles
Preface
29Si NMR Characterization of Silica Tetrahedron in the Silica Fume Simulate Hydration
p.1
Investigation of Early Cement Paste with 1H Low-Field NMR
p.5
The Application of Freezing-Melting Hysteresis in Hardened White Cement Paste
p.10
An Experimental Study of Water in Pore System of Hardened Cement Paste by Magnetic Resonance
p.14
Quantitative Characterization of Hydration of Cement Pastes by Rietveld Phase Analysis and Thermoanalysis
p.19
Kinetic Study of Portland Cement Hydration with Ground Penetrating Radar
p.25
Study on the Hydration Kinetics of Portland Cement
p.30
Relationship between Internal Relative Humidity and Autogenous Shrinkage of Cement Paste with Supplementary Cementitious Materials (SCM)
p.35

An Experimental Study of Water in Pore System of Hardened Cement Paste by Magnetic Resonance

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Abstract:

The water distribution in hardened cement paste with different ages, water to cement ratio (w/c) and different cured methods were investigated by low field NMR. The transverse relaxation time, T2, was used as a parameter to describe the water phase constrained in pores. The results show that the T2 distributions of pastes in the early age are bimodal distribution. As the curing time increase, the T2 distribution peaks shift gradually to the short T2 values reflecting the decrease of mean pore dimension as well as the increase of specific surface area resulted from the gel products. In addition, the influences of initial water to cement ratio and cure methods on water distribution are occurred mainly during the early age. When cured to 28 days, the differences of water distribution in various samples are unconspicuous.

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Periodical:

Key Engineering Materials (Volume 539)

Pages:

14-18

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.539.14

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Online since:

January 2013

Authors:

An Ming She, Wu Yao, Wan Cheng Yuan

Keywords:

Cement Paste, NMR, Relaxation Time, Water

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] H. F. W. Taylor: Cement chemistry, 2nd Ed. (Thomas Telford, London, England, 1997).

Google Scholar

[2] N. M. Nemes, D. A. Neumann, R. A. Livingston: J. Mater. Res. vol. 21 [10] (2006), p.2516.

Google Scholar

[3] N. C. Collier, J. H. Sharp, N. B. Milestone et al.: Cement Concrete Res. vol. 38 [6] (2008), p.737.

Google Scholar

[4] G. van der Heijden, L. Pel, H. P. Huinink et al.: Chem. Eng. Sci. vol. 66 [18] (2011), p.4241.

Google Scholar

[5] G. Almeida, S. Gagne, R. E. Hernandez: Wood Sci. Technol. vol. 41 (2007), p.293.

Google Scholar

[6] J. P. Korb: New J. Phys. vol. 13 [3] (2011)

Google Scholar

[7] A. She, W. Yao: Science in China-Technological Sciences vol. 53 [6] (2010), p.1471.

Google Scholar

[8] K. R. Brownstein, T. C. Tarr: Phys. Rev. A vol. 19 [6] (1979), p.2446.

Google Scholar

[9] K. Keating, R. Knight: Geophysics vol. 72 [1] (2007), p.E27.

Google Scholar

[10] P. J. McDonald, V. Rodin, A. Valori: Cement Concrete Res. vol. 40 [12] (2010), p.1656.

Google Scholar

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