Condition Survey and Assessment of Concrete Footings in Industrial Plants
Publication: Journal of Materials in Civil Engineering
Volume 9, Issue 4
Abstract
A condition survey method was developed to assess more than 1,000 footings in an old oil refinery in the Arabian gulf. A data collection sheet was used to record the exposure conditions during operation, the observed distresses, their degree, and the overall condition of the footings. A classification method was used to categorize the footings according to the observed distresses by applying a weighting system to each distress and degree of damage. The degree of confidence in this method was evaluated and was found to range between 85 and 91%. The results showed that 75% of the footings were exposed to cyclic wetting by seawater or combined attack from cyclic wetting with other pollutants. Footings exposed to water or water associated with pollutants suffered 75% of the total reported distresses. Cracking, delamination, and spalling were the most frequent distresses reported, and together they represented 60% of the total. Poor detailing of the joint between the concrete and the equipment chassis and the use of cement mortar with a high water to cement (w/c) ratio in sealing anchor bolts were found to be responsible for many of the steel corrosion distresses.
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References
1.
ACI Committee 201. (1984). “Guide for making a condition survey of concrete in service,” ACI 201.1R-68; Manual of Concrete practice, Am. Concrete Inst., Detroit, Mich.
2.
Al-Qazweeni, G., and Daoud, O. K.(1991). “Concrete deterioration in a 20 years old structure in Kuwait.”Int. J. Cement and Concrete Res., 21(6), 1155–1164.
3.
Daoud, O. E. K., and Ibrahim, I. A.(1995). “Impact of environmental and operating conditions in oil refineries on concrete properties.”ACI Mat. J., 93(4), 307–317.
4.
Daoud, O. K., Al-Qazweeni, J., and Higab, K. (1990). “Causes of deterioration and repair measures in concrete foundations at a Kuwaiti refinery.”Progress Rep. KISR 3468, Kuwait Inst. for Scientific Res., Kuwait.
5.
Novokshchenov, V.(1995). “Deterioration of reinforced concrete in the marine industrial environment of the Arabian Gulf—a case study.”Mat. and Struct., 28(181), 392–400.
6.
O'Connor, J. P.(1994). “Middle Eastern concrete deterioration: unusual case history.”J. Perfo. of Constr. Fac., ASCE, 8(3), 201–212.
7.
Shalaby, H., and Daoud, O. E. K.(1990). “Case studies of deterioration of coastal structures in two oil refineries in the Arabian Gulf region.”Int. J. Cement and Concrete Res., 20(6), 975–985.
Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 9 • Issue 4 • November 1997
Pages: 161 - 170
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Nov 1, 1997
Published in print: Nov 1997
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