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Fuzzy Inference Based Design for Durability of Reinforced Concrete Structure in Chloride-Induced Corrosion Environment
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 Title & Authors
Fuzzy Inference Based Design for Durability of Reinforced Concrete Structure in Chloride-Induced Corrosion Environment
Do Jeong-Yun; Song Hun; Soh Yang-Seob;
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 Abstract
This article involves architecting prototype-fuzzy expert system for designing the nominal cover thickness by means of fuzzy inference for quantitatively representing the environment affecting factor to reinforced concrete in chloride-induced corrosion environment. In this work, nominal cover thickness to reinforcement in concrete was determined by the sum of minimum cover thickness and tolerance to that defined from skill level, constructability and the significance of member. Several variables defining the quality of concrete and environment affecting factor (EAF) including relative humidity, temperature, cyclic wet and dry, and the distance from coast were treated as fuzzy variables. To qualify EAF the environment conditions of cycle degree of wet-dry, relative humidity, distance from coast and temperature were used as input variables. To determine the nominal cover thickness a qualified EAF, concrete grade, and water-cement ratio were used. The membership functions of each fuzzy variable were generated from the engineering knowledge and intuition based on some references as well as some international codes of practice.
 Keywords
durability design;reinforced concrete;fuzzy inference system;expert system;
 Language
English
 Cited by
 References
1.
Somerville, G., 'The Design Life of Structures,' Thomson Litho Ltd., East Kilbride, Scotland, 1992, pp.25-39

2.
Jeongyun Do, 'Nominal Cover Thickness Design of RC Quantitatively Considering Environment Condition by means of Fuzzy Inference System', Journal of Asian Architecture and Building Engineering, Vol.3 No.2, 2004, pp.225-232 crossref(new window)

3.
ACI Committee 201, 'Guide to Durable Concrete, Manual of Concrete Practice, Part 1,' American Concrete Institute, Detroit, 1994, pp.16-20

4.
Bentur, A. et al., 'Steel Corrosion in Concrete; Fundamentals and Civil Engineering Practice,' E & FN Spon, London, 1997, pp.24-58 and 146-155

5.
ACI Committee 318, 'Building Code Requirements for Reinforced Concrete and Commentary, Manual of Concrete Practice, Part 3,' American Concrete Institute, Detroit, 1994, pp.35-40

6.
George J. Klir and Bo Yuan, 'Fuzzy Sets and Fuzzy Logic:Theory and Applications,' Prentice-Hall Inc., USA, 1995, pp.97-117

7.
Mun, K.I. and Lee, H.Y., 'Intellectual information system using Matlab.' Ajin company, Seoul (In Korean), 2003, pp.12-32

8.
Yoshiki, T., et al., 'Study on Required Cover Depth of Concrete Highway Bridges in Coastal Environment,' 17th U.S.-Japapn Bridge Engineering Workshop, Tsukuba, Japan, Nov. 2001, pp. 1-16

9.
British Standard 8110, 'Structural Use of Concrete, Part 1, Code of Practice for Design and Construction,' British Standard Institute, 1985

10.
BS EN 206-1/BS 8500, 'Guide to the Selection of Concrete Quality and Cover to Reinforcement for Normal Concrete Structures,' British Cement Association, Berkshire, 2002, pp.1-3

11.
Maher A. B., 'Performance of Concrete in a Coastal Environment,' Cement and Concrete Composites, Vol.25 Issue 6, 2003, pp.539-548 crossref(new window)

12.
Zivica, V., 'Influence of W/C ratio on Rate of Chloride Induced Corrosion of Steel Reinforcement and its Dependence on Ambient Temperature,' Bulletin of Material Science, Vol.26 No.5, 2003, pp.471-475 crossref(new window)