Research Articles | Challenge Journal of Concrete Research Letters

Economic Service Life of RC Structure Based on Corrosion Initiation Time

Md. Shafiqul Islam
View Counter: Abstract | 979 times | ‒ Full Article | 217 times |

Full Text:

PDF

Abstract


Target service life of the structure specified by the codes and standards for RC infrastructures has failed to achieve due to uncertainties at the time of construction of structure and at exposure to real environment. Moreover, the more resistivity of the cover concrete, the larger is the service life and thus higher is the cost incurred by the owner. Therefore, economic service life (ESL) has more value than considering engineering service life, where both the failure and the cost consider parallel in the prediction of service life.A statistical model to determine the time to initiate corrosion due to chloride attack to the RC member and subsequent repair considering all costs incorporated is taken into account in this research. Cost minimization model is used to calculate economic service life where initial cost, repair cost and gain from revenue for the structure are paid attention. Further, a correlation between corrosion initiation time (CIT) and economic service life (ESL) is proposed.


Keywords


corrosion initiation time; economic service life; random sampling

References


Baboian, R., (1992). “Synergistic Effects of Acid Deposition and Road Salts on Corrosion.” Corrosion Forms and Control for Infrastructures, ASTM STP 1137, pp. 17-29.

The Ministry of Land, Infrastructure and Transport, (2003). “White paper on of land, infrastructure and transportation in Japan.”

Sagu¨es, A., Kranc, S., Presuel-Moreno, F., (1997). “Applied Modeling for Corrosion Protection Design for Marine Bridge Substructures.” Report No. 0510718, Florida Department of Transportation, Tallahassee, FL.

Kalos, M.H. and Whitlock, P.A., (1986). “Monte Carlo Methods: Volume I. Basics.” Wiley, New York.

Efron, B. and Tibshirani, R.J., (1993). “An Introduction to the Bootstrap.” Chapman and Hall, New York.

Drinkwater, R. W. and Hastings, N. A. J., (1967). “An Economic Replacement Model.” Op. Rsrch. Qtrly., 18(2), pp. 121-138.

Bertolini, L., Elsener, B., Pedeferri, P., Polder, R., (2004). “Corrosion of Steel in Concrete – Prevention, Diagnosis, Repair.” Weinheim: Wiley-VCH.

Kirkpatrick, T.J., Weyers, R.E., Anderson-Cook, C.M., Sprinkel, M.M., (2002). “Probabilistic Model for the Chloride-induced Corrosion Service Life of Bridge Decks.” Cement and Concrete Research, Vol. 32, pp. 1943–1960.

Mitchell, Z.W., Jr., (1998). “A Statistical Analysis Of Construction Equipment Repair Costs Using Field Data & The Cumulative Cost Model.” PhD Dissertation submitted to the Faculty of the Virginia Polytechnic Institute and State University.

JSCE Guidelines for Concrete, (2007). “Standard Specifications for Concrete Structures-Maintenance.” Japan Society of Civil Engineers.

Rostam, S., (2005). “Design and Construction of Segmental Concrete Bridges for Service Life of 100 to 150 Years.” ASBI Convention, Washington, DC.


Refbacks

  • There are currently no refbacks.