Quantitative Analysis of Chloride Ion Diffusion in Cementitious Materials Using Al27 NMR Spectroscopy
作者： Amirpasha Peyvandi , Daniel Holmes , Anagi M. Balachandra , Parviz Soroushian
DOI: 10.1061/(ASCE)IS.1943-555X.0000236
关键词: Chemical binding 、 Chloride 、 Nuclear magnetic resonance spectroscopy 、 Spectroscopy 、 Analytical chemistry 、 Materials science 、 Infrared spectroscopy 、 Ion 、 Magic angle spinning 、 NMR spectra database
摘要: AbstractNuclear magnetic resonance (NMR) spectroscopy was employed to evaluate the effects of chloride ion diffusion on chemical environment hydrated cement paste and concrete. Al27 magic angle spinning NMR spectra were obtained at different depths from surface (surface, 3 mm, 6 mm) exposed solution after 1 month. Deconvolution concrete salt revealed a clear trend in penetration. Most importantly, intensities areas under peaks corresponding Friedel’s (8.5 ppm) ettringite (13.3 ppm), which reflect extent binding by hydrates, dropped with increasing depth. These trends demonstrate ability track into Fourier-transform infrared wet chemistry methods order verify findings spectroscopy.
sci-hub.se 参考文章(19)
J. A. Chudek, G. Hunter, M. R. Jones, S. N. Scrimgeour, P. C. Hewlett, A. B. Kudryavtsev, Aluminium-27 solid state NMR spectroscopic studies of chloride binding in Portland cement and blends Journal of Materials Science. ,vol. 35, pp. 4275- 4288 ,(2000) , 10.1023/A:1004824100029
Jørgen Skibsted, Hans J. Jakobsen, Christopher Hall, Quantitative Aspects of 27Al MAS NMR of Calcium Aluminoferrites Advanced Cement Based Materials. ,vol. 7, pp. 57- 59 ,(1998) , 10.1016/S1065-7355(97)00017-5
G. Wilsch, F. Weritz, D. Schaurich, H. Wiggenhauser, Determination of chloride content in concrete structures with laser-induced breakdown spectroscopy Construction and Building Materials. ,vol. 19, pp. 724- 730 ,(2005) , 10.1016/J.CONBUILDMAT.2005.06.001
Henry Cardenas, Kunal Kupwade-Patil, Sven Eklund, Corrosion Mitigation in Mature Reinforced Concrete Using Nanoscale Pozzolan Deposition Journal of Materials in Civil Engineering. ,vol. 23, pp. 752- 760 ,(2011) , 10.1061/(ASCE)MT.1943-5533.0000194
C.C. Yang, L.C. Wang, The diffusion characteristic of concrete with mineral admixtures between salt ponding test and accelerated chloride migration test Materials Chemistry and Physics. ,vol. 85, pp. 266- 272 ,(2004) , 10.1016/J.MATCHEMPHYS.2003.12.025
Bassem Saassouh, Zoubir Lounis, Probabilistic modeling of chloride-induced corrosion in concrete structures using first- and second-order reliability methods Cement & Concrete Composites. ,vol. 34, pp. 1082- 1093 ,(2012) , 10.1016/J.CEMCONCOMP.2012.05.001
M.B. Otieno, M.G. Alexander, H.-D. Beushausen, Corrosion in cracked and uncracked concrete – influence of crack width, concrete quality and crack reopening Magazine of Concrete Research. ,vol. 62, pp. 393- 404 ,(2010) , 10.1680/MACR.2010.62.6.393
Fujian Tang, Genda Chen, Jeffery S. Volz, Richard K. Brow, Michael L. Koenigstein, Cement-modified enamel coating for enhanced corrosion resistance of steel reinforcing bars Cement & Concrete Composites. ,vol. 35, pp. 171- 180 ,(2013) , 10.1016/J.CEMCONCOMP.2012.08.009
Ruijin Zhang, Arnaud Castel, Raoul François, Concrete cover cracking with reinforcement corrosion of RC beam during chloride-induced corrosion process Cement and Concrete Research. ,vol. 40, pp. 415- 425 ,(2010) , 10.1016/J.CEMCONRES.2009.09.026
G.K. Sun, J. Francis Young, R. James Kirkpatrick, The role of Al in C-S-H: NMR, XRD, and compositional results for precipitated samples Cement and Concrete Research. ,vol. 36, pp. 18- 29 ,(2006) , 10.1016/J.CEMCONRES.2005.03.002