Carbonation-induced corrosion minimization in steel reinforced concrete structures

Abaho, et al.

International Journal of Advanced and Applied Sciences

Int. j. adv. appl. sci.

EISSN: 2313-3724

Print ISSN: 2313-626X

Volume 4, Issue 6 (June 2017), Pages: 72-77

Title: Carbonation-induced corrosion minimization in steel reinforced concrete structures

Author(s): G. Abaho ¹, M. R. Pranesh ¹, G. Senthil Kumaran ^2,*

Affiliation(s):

¹Department of Civil Engineering, Jain University, Bangalore, India
²Department of Civil, Environmental and Geomatics Engineering, University of Rwanda, Kigali, Rwanda

https://doi.org/10.21833/ijaas.2017.06.010

Full Text - PDF XML

Abstract:

The aim of the work was to find out the corrosion condition, cause and remedial solution for reinforced concrete structures located at non coastal regions. Concrete cover thickness ranged from 12cm to 50cm. Rebound hammer strength ranged from (12-28) N/mm2. The pH ranged between 8 and 12 but 85% of pH was below 10. Results show that for corrosion conditions more than 80% quai-situation value lay between (-0.420 and 0.380) VCSE which indicates high probability of corrosion of reinforcement. Real structures surveyed also indicated that they were devoid of maintenance schedules. Irrespective of structural member, survey data on analysis indicate an average carbonation coefficient (K) of 3.83mm/year^0.5in concrete structure exposed to Bangalore atmosphere. Hence, the study indicates that regular maintenance schedules for reinforced concrete structures are essential with preventive approach. Carbonation induced corrosion was accelerated by 490ppm concentration of Carbon dioxide in the surrounding environment of the surveyed structures. It was facilitated by the deficiency in construction practices like inadequate concrete cover, high w/c ratio hence poor quality of concrete in general.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Keywords: Reinforced concrete structures, Carbonation-induced corrosion, Carbonation coefficient

Article History: Received 17 September 2016, Received in revised form 12 December 2016, Accepted 20 March 2017

Digital Object Identifier:

https://doi.org/10.21833/ijaas.2017.06.010

Citation:

Abaho G, Pranesh MR, and Kumaran GS (2017). Carbonation-induced corrosion minimization in steel reinforced concrete structures. International Journal of Advanced and Applied Sciences, 4(6): 72-77

http://www.science-gate.com/IJAAS/V4I6/Abaho.html

References:

Abaho GG, Pranesh MR, Sudarshan SI, and Senthil KG (2015). A comparative study on causes of corrosion of steel reinforcement in RC structures at Bangalore, India and Kigali, Rwanda. International Journal of Engineering and Technology (IJET), 7(3): 1041-1048.

ACI (1992). Building code requirements for reinforced concretes. American Concrete Institute (ACI 318-89), Detroit, USA.

Ahmad Z (2006). Principles of corrosion engineering and corrosion control. Elsevier Science & Technology Book, London, UK.

Al-Kadhimi TKH, Banfill PFG, Millard SG, and Bungey J H (1996). An accelerated carbonation procedure for studies on concrete. Advances in Cement Research, 8(30): 47-59. https://doi.org/10.1680/adcr.1996.8.30.47

Bentur A, Diamond S, and Berke N (1997). Steel corrosion in concrete, fundamental and civil engineering practice. E & FN Spoon, London, UK.

Berke NS and Hicks MC (1994). Predicting chloride profiles in concrete. Corrosion, 50(3): 234-239. https://doi.org/10.5006/1.3293515

Branco FA and Brito JDe (2004). Handbook of concrete bridge management. American Society of Civil Engineers, Reston, USA. https://doi.org/10.1061/9780784405604

Broomfield JP (1997). Corrosion of steel in concrete understanding, investigation and repair. E & FN Spoon, London, UK. https://doi.org/10.4324/9780203414606

Fu X and Chung D (1997). Effect of corrosion on the bond between concrete and steel rebars. Journal of Cement Concrete Research, 27(12): 1811–1815. https://doi.org/10.1016/S0008-8846(97)00172-5

Gajanan MS (2012). Green building with Concrete-Sustainable design and construction. CRC press, New York, USA.

Guha T and Ghosh P (2015). Diurnal and seasonal variation of mixing ratio and δ13C of air CO2 observed at an urban station Bangalore, India. Environmental Science and Pollution Research, 22(3): 1877-1890. https://doi.org/10.1007/s11356-014-3530-3 PMid:25292295

Ho DWS and Lewis RK (1987). Carbonation of concrete and its prediction. Cement and Concrete Research, 17(3): 489-504. https://doi.org/10.1016/0008-8846(87)90012-3

Maslehuddin M, Page CL, Rasheeduzzafar CL, and Al-Mana AI (1996). Effect of temperature on pore solution chemistry and reinforcement corrosion in contaminated concrete. In: Page CL, Bamforth PB, and Figg JW (Eds.), Corrosion of reinforcement in concrete construction: 67-75. Special Publication-Royal Society of Chemistry, Cambridge, UK.

Monteiro I, Branco FA, De Brito J, and Neves R (2012). Statistical analysis of the carbonation coefficient in open air concrete structures. Construction and Building Materials, 29: 263-269. https://doi.org/10.1016/j.conbuildmat.2011.10.028

Neville AM (1995). Properties of concrete. 4th Edition, Longman Group Limited, Harlow, UK.

Neville AM (2004). Properties of concrete, 4th Edition, Pearson Education Limited, UK.

Ramachandra TV and Kumar U (2010). Greater Bangalore: Emerging urban heat island. GIS Development, 14(1): 86-104.

Saetta AV, Schrefler BA, and Vitaliani RV (1993). The carbonation of concrete and the mechanism of moisture, heat and carbon dioxide flow through porous materials. Cement and Concrete Research, 23(4): 761-772. https://doi.org/10.1016/0008-8846(93)90030-D

Schiessl P (1998). Corrosion of steel in concrete. Report of the Technical Committee 60 CSC RILEM, Chapman and Hall, London, UK.

Sudhira HS, Ramachandra TV and Balasubrahmanya MH (2007). City profile Bangalore. Cities, 24(5): 379–390. https://doi.org/10.1016/j.cities.2007.04.003

Tuutti K (1982). Corrosion of steel in concrete. Swedish Cement and Concrete Research Institute. Stockholm, Sweden. PMid:6951261