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Special Report
converter. Photograph of the concrete N.S., Steel Corrosion in Concrete: Whiting, D., ASTM STP No. 1276,
is produced from which defects in rein- Fundamentals and Civil Engineer- p. 91-106, (1966).
forcements, cracks, voids, etc. are iden- ing Practice, 1977. 16. Gowers, K.R., Millard, S.G., Gill,
tified. Radiations being dangerous, extra 3. Elsener, B., Buchler, M., Stalder, J.S., and Gill, R.P., British Corro-
precautions are to be taken(25). F., and Bohni, H., Journal of Cor- sion Journal, No. 29, p. 25, (1994).
rosion, Vol. 55, page 1155, 1999. 17. Andrade, C., Alonso, M.C., Gon-
Visual inspection 4. ASTM C 876-91, Standard test zalez, J.A., “An initial effort to use
Visual inspection of concrete struc- method for half-cell potentials of corrosion rate measurements for
tures, sometimes with binoculars, is uncoated reinforced steel in con- estimating steel rebar durability in
done once a month, year, or several crete, (1999). concrete”, ASTM STP 1065, Eds.
years, according to the importance and 5. Elsener, B., Bonhi, H., Mate- Berke et al., Philadelphia, (1990).
time after the structure was completed. rial Science Forum, No. 111/112, 18. Eden, D.A., and Rothwell, A.N.,
In some cases, some inspection is car- p-635, (1992). “Electrochemical noise data analy-
ried out with hammers to assess the 6. Arup, H., in: Crane, A.P., Ed., Cor- sis, interpretation, and presenta-
soundness of concrete. The periodic rosion of reinforcement in concrete tion”, Conference on corrosion,
inspection covers the visual data such as construction, (1983). NACE International, Houston,
cracks, rust stains, quality of concrete, 7. Browne, R.D., Geoghegan, M.P., Paper No. 292, (1992).
spalled concrete cover, exposed rein- and Baker, A.F., in: Crane, A.P., 19. Searson, P.C., and Dawson, J.L.,
forcement, etc.(25). Ed., Corrosion of reinforcement in “Electrochemical Noise Analysis”,
concrete construction, (1983). Journal of Electrochemical Society,
CONCLUSION 8. Flis, J., Pickering, H.W., Osseo- No. 135, p. 1908, (1998).
Reinforced concrete structures have Asare, K., Electrochemistry, Acti- 20. Maalej, M., Karasaridis, A., Pan-
the potential to be durable and capable vity No. 43, p-1921, (1998). tazopoulou, S., Hatzinakos, D.,
of withstanding adverse environmental 9. Videm, K., “Corrosion of rein- Journal of Smart Materials and
conditions. However, failures do still forcement in concrete – Monitor- Structures, No. 11, p. 581, (2002).
occur as a result of premature reinforce- ing, Prevention and Rehabilita- 21. Kuang, K.S.C., Akmaluddin,
ment corrosion. The maintenance and tion”, EFC No. 25, p. 104-121, Cantwell, C.J., and Thomas, C.,
repair of bridges and buildings requires (1998). Journal on Measurement Science
effective inspection and monitoring for 10. Yeih, W. and Huang, R., “Cement and Technology, No.14, p. 205,
assessing reinforcement corrosion. Corrosion Research”, No. 28, p. (2003).
1071, (1998). 22. Rajagopalan, K.S., Chandra-
A number of rebar corrosion mea- 11. Protection of reinforcement in con- sekharan, S., Rangaswamy, N.S.,
surement techniques are available. Each crete – An update, Galvanizing and and Muralidharan, V.S., Indian
has certain advantages and limitations. other methods, Indian Lead Zinc Concrete Journal, No. 52(9), p. 231,
To obtain maximum information about Information Centre (ILZIC), New (1978).
the corrosion state, a combination of Delhi, page-36, (1995). 23. C-597-83, Standard Test Method
techniques is needed. Although corro- 12. Berke, N.S., Hicks, M., in: Chaker, for Pulse Velocity through Con-
sion measurements are usually qualita- V., Ed., “Corrosion forms and con- crete, Annual book of ASTM, Stan-
tive and semi-quantitative, significant trol for infrastructure”, ASTM. dards, Vol. 4 (02), p. 289, (1989).
benefits can be derived. The develop- 13. Andrade, C., Alonso, S., Goni, S., 24. Sato, et al., Measurement technique
ment of durable, embeddable sensors In: Eds. Dhir. R.K., and Roderick, of acquiring sodium chloride con-
and inexpensive microprocessor con- M., “Proceedings of Conference centration by using Near-Infrared
trol and communications, have led to on Concrete”, Scotland, (1993). spectrum, Proceedings of JSCE
development of corrosion monitoring 14. Millard, S., Harrison, J., Edwards, Annual Conference, Vol. 56, pp: 844-
systems. A., British Journal of Non-destruc- 845, (2001).
tive Testing, No. 31, p. 616, (1989). 25. Song, Ha-Won and Saraswathy,
REFERENCES 15. Broomfield, J.P., “Techniques Velu, “Corrosion Monitoring of
1. Raupach, M., and Schiebl, P., NDT & to assess the corrosion activity Reinforced Concrete Structures –
Electrochemical International, Vol., of steel reinforced concrete A Case Review”, International
34, pp-435. structures”, in Eds: Berke, N.S., Journal of Electrochemical Science,
2. Bentur, A., Diamond, S., Berke, Escalante, E., Nmai, C.K., and No.2, p. 1-28, (2007).
196 Chemical Weekly February 27, 2024
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