Long-Term Performance of Silica Fume Concrete in Soil Exposure of Marine Environments
Publication: Journal of Materials in Civil Engineering
Volume 29, Issue 9
Abstract
Given the time-dependent microstructural modifications in cement matrix, long-term monitoring of concrete in natural exposures will be necessary. The present research addresses the long-term performance of concrete specimens embedded in coastal soil of a harsh marine environment for 88 months. Chloride ion diffusion, binding capacity, and effects of carbonation and surface coatings were investigated for concrete mixtures with up to 12.5% silica fume (SF) and water-to-cementitious materials ratios () of 0.4 and 0.5. Three types of surface coatings, including bitumen and rubber emulsion, polymer modified cementitious coating, and polyurethane, were also incorporated. It was observed that concentration of bound chloride ion is decreasing as a result of an increase in SF content from 0 to 12.5% and increasing the from 0.4 to 0.5. Slight carbonation was observed at 88 months, with carbonation depths limited to 5.5 mm. Decrease in chloride binding capacity was observed in carbonated areas. Depth of concrete cover to reach 50 and 100 years of service life was calculated. It was observed that a concrete cover of 200 mm can secure 100 years of service life while incorporating a concrete mixture with w/cm of 0.5 and 100% portland cement. The required thickness of cover was reduced to 35 mm in the case of the mixture cast with 12.5% SF and of 0.4. Coating equivalency lines were developed to compare the efficiency of the investigated coatings with corresponding combinations of and SF replacement level.
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Acknowledgments
The authors would like to acknowledge the financial support by the Construction Materials Institute (CMI) at the University of Tehran. The technical assistance and contributions of the colleagues at CMI is highly appreciated.
Disclaimer
The authors declare that they have no conflict of interest.
References
Almusallam, A., Khan, F. M., and Maslehuddin, M. (2002). “Performance of concrete coating under varying exposure conditions.” Mater. Struct., 35(8), 487–494.
Andrade, C., Climent, M. A., and de Vera, G. (2015). “Procedure for calculating the chloride diffusion coefficient and surface concentration from a profile having a maximum beyond the concrete surface.” Mater. Struct., 48(4), 863–869.
Ann, K. Y., Ahn, J. H., and Ryou, J. S. (2009). “The importance of chloride content at the concrete surface in assessing the time to corrosion of steel in concrete structures.” Constr. Build. Mater., 23(1), 239–245.
Anstice, D. J., Page, C. L., and Page, M. M. (2005). “The pore solution phase of carbonated cement pastes.” Cem. Concr. Res., 35(2), 377–383.
ASTM. (2012). “Standard test method for acid-soluble chloride in mortar and concrete.” ASTM C1152/C1152M-04, West Conshohocken, PA.
ASTM. (2015a). “Standard test method for water-soluble chloride in mortar and concrete.” ASTM C1218/C1218M-15, West Conshohocken, PA.
ASTM. (2015b). “Standard test methods for chemical analysis of hydraulic cement.” ASTM C114-15, West Conshohocken, PA.
Brenna, A., Bolzoni, F., Beretta, S., and Ormellese, M. (2013). “Long-term chloride-induced corrosion monitoring of reinforced concrete coated with commercial polymer-modified mortar and polymeric coatings.” Constr. Build. Mater., 48, 734–744.
Cheewaket, T., Jaturapitakkul, C., and Chalee, W. (2010). “Long term performance of chloride binding capacity in fly ash concrete in a marine environment.” Constr. Build. Mater., 24(8), 1352–1357.
Crank, J. (1979). The mathematics of diffusion, Oxford University Press, New York.
Dhir, R. K., El-Mohr, M. A. K., and Dyer, T. D. (1997). “Developing chloride resisting concrete using PFA.” Cem. Concr. Res., 27(11), 1633–1639.
Dhir, R. K., and Jones, M. R. (1999). “Development of chloride-resisting concrete using fly ash.” Fuel, 78(2), 137–142.
Diamanti, M. V., Brenna, A., Bolzoni, F., Berra, M., Pastore, T., and Ormellese, M. (2013). “Effect of polymer modified cementitious coatings on water and chloride permeability in concrete.” Constr. Build. Mater., 49, 720–728.
DIN (Deutsches Institut Fur Normung). (1991). “Test methods for testing concrete.” DIN 1048, Beuth, Berlin.
Eto, S., Matsuo, T., Matsumura, T., Fujii, T., and Tanaka, M. Y. (2014). “Quantitative estimation of carbonation and chloride penetration in reinforced concrete by laser-induced breakdown spectroscopy.” Spectrochim. Acta. Part B, 101, 245–253.
Glass, G. K., and Buenfeld, N. R. (2000). “The influence of chloride binding on the chloride induced corrosion risk in reinforced concrete.” Corros. Sci., 42(2), 329–344.
Hassan, Z. (2001). “Binding of external chloride by cement pastes.” Ph.D. thesis, Dept. of Building Materials, Univ. of Toronto, Toronto.
Hirao, H., Yamada, K., Takahashi, H., and Zibara, H. (2005). “Chloride binding of cement estimated by binding isotherms of hydrates.” J. Adv. Concr. Technol., 3(1), 77–84.
Ibrahim, M., Al-Gahtani, A. S., Maslehuddin, M., and Dakhil, F. H. (1999). “Use of surface treatment materials to improve concrete durability.” J. Mater. Civ. Eng., 36–40.
Khan, M. S. H., Kayali, O., and Troitzsch, U. (2016). “Chloride binding capacity of hydrotalcite and the competition with carbonates in ground granulated blast furnace slag concrete.” Mat. Struct., 49(11), 4609–4619.
Kobayashi, K., Funato, M., Shiraki, R., Uno, Y., and Kawai, K. (1989). “Carbonation and concentration of chloride in concrete containing chlorides.” Kenkyin, 41(12), 930–932.
Kulakowski, M. P., Pereira, F. M., and Dal Molin, D. C. (2009). “Carbonation-induced reinforcement corrosion in silica fume concrete.” Constr. Build. Mater., 23(3), 1189–1195.
Kuosa, H., Ferreira, R. M., Holt, E., Leivo, M., and Vesikari, E. (2014). “Effect of coupled deterioration by freeze-thaw, carbonation and chlorides on concrete service life.” Cem. Concr. Compos., 47, 32–40.
Loser, R., Lothenbach, B., Leemann, A., and Tuchschmid, M. (2010). “Chloride resistance of concrete and its binding capacity-comparison between experimental results and thermodynamic modeling.” Cem. Concr. Compos., 32(1), 34–42.
Luo, R., Cai, Y., Wang, C., and Huang, X. (2003). “Study of chloride binding and diffusion in GGBS concrete.” Cem. Concr. Res., 33(1), 1–7.
Mangat, P. S., and Molloy, B. T. (1994). “Prediction of long term chloride concentration in concrete.” Mater. Struct., 27(6), 338–346.
Medeiros, M. H., and Helene, P. (2009). “Surface treatment of reinforced concrete in marine environment: Influence on chloride diffusion coefficient and capillary water absorption.” Constr. Build. Mater., 23(3), 1476–1484.
Meijers, S. J. H., Bijen, J. M. J. M., De Borst, R., and Fraaij, A. L. A. (2005). “Computational results of a model for chloride ingress in concrete including convection, drying-wetting cycles and carbonation.” Mater. Struct., 38(2), 145–154.
Moradllo, M. K., Shekarchi, M., and Hoseini, M. (2012). “Time-dependent performance of concrete surface coatings in tidal zone of marine environment.” Constr. Build. Mater., 30, 198–205.
Nokken, M., Boddy, A., Hooton, R. D., and Thomas, M. D. A. (2006). “Time dependent diffusion in concrete—Three laboratory studies.” Cem. Concr. Res., 36(1), 200–207.
NordTest Method. (1992). “NordTest method for chloride migration coefficient from non-steady state migration experiments in concrete, mortar, and cement-based repair materials.”, NordTest, Finland.
NordTest Method. (1995). “NordTest method for accelerated chloride penetration in hardened concrete and other cement-based materials.”, NordTest, Finland.
Praw, M. (2013). “Polyurethane coatings: A brief overview.” J. Protective Coat. Linings, 30(8), 34.
RILEM. (1988). “Measurement of hardened concrete carbonation depth.” TC14-CPC, RILEM CPC18.
Rodrigues, M. P. M. C., Costa, M. R. N., Mendes, A. M., and Marques, M. E. (2000). “Effectiveness of surface coatings to protect reinforced concrete in marine environments.” Mater. Struct., 33(10), 618–626.
Sadati, S., Arezoumandi, M., and Shekarchi, M. (2015). “Long-term performance of concrete surface coatings in soil exposure of marine environments.” Constr. Build. Mater., 94, 656–663.
Sadati, S., Khanzadeh Moradllo, M., and Shekarchi, M. (2016). “Long-term durability of onshore coated concrete—Chloride ion and carbonation effects.” Front. Struct. Civ. Eng., 10(2), 150–161.
Shekarchi, M., Rafiee, A., and Layssi, H. (2009). “Long-term chloride diffusion in silica fume concrete in harsh marine climates.” Cem. Concr. Compos., 31(10), 769–775.
Sumranwanich, T., and Tangtermsirikul, S. (2004). “A model for predicting time-dependent chloride binding capacity of cement-fly ash cementitious system.” Mater. Struct., 37(6), 387–396.
Suryavanshi, A. K., and Swamy, R. N. (1996). “Stability of Friedel’s salt in carbonated concrete structural elements.” Cem. Concr. Res., 26(5), 729–741.
Swamy, R. N., Suryavanshi, A. K., and Tanikawa, S. (1998). “Protective ability of an acrylic-based surface coating system against chloride and carbonation penetration into concrete.” Mater. J., 95(2), 101–112.
Tuutti, K. (1982). Corrosion of steel in concrete, Swedish Cement and Concrete Research Institute, Stockholm, Sweden.
Zhang, J. Z., and Buenfeld, N. R. (2000). “Chloride profiles in surface-treated mortar specimens.” Constr. Build. Mater., 14(6), 359–364.
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Published In
Journal of Materials in Civil Engineering
Volume 29 • Issue 9 • September 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Oct 18, 2016
Accepted: Feb 1, 2017
Published online: May 15, 2017
Published in print: Sep 1, 2017
Discussion open until: Oct 15, 2017
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