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Computers and Concrete Volume 15, Number 6, June 2015, pages 879-902 DOI: http://dx.doi.org/10.12989/cac.2015.15.6.879 |
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Remaining service life estimation of reinforced concrete buildings based on fuzzy approach |
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Hae-Chang Cho,Deuck Hang Lee,Hyunjin Ju,Kang Su Kim,
Ki-Hyun Kim and Paulo J.M. Monteiro
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| Abstract | ||
| The remaining service life (RSL) of buildings has been an important issue in the field of building and facility management, and its development is also one of the essential factors for achieving sustainable infrastructure. Since the estimation of RSL of buildings is heavily affected by the subjectivity of individual inspector or engineer,much effort has been placed in the development of a rational method that can estimate the RSL of existing buildings more quantitatively using objective measurement indices. Various uncertain factors contribute to the deterioration of the structural performance of buildings, and most of the common building structures are constructed not with a single structural member but with various types of structural components (e.g., beams, slabs, and columns) in multistory floors. Most existing RSL estimation methods, however, consider only an individual factor. In this study, an estimation method for RSL of concrete buildings is presented by utilizing a fuzzy theory to consider the effects of multiple influencing factors on the deterioration of durability (e.g., concrete carbonation, chloride attack, sulfate attack), as well as the current structural condition (or damage level) of buildings. | ||
| Key Words | ||
| remaining service life; chloride attack; concrete carbonation; sulfate attack; Choquet integral; | ||
| Address | ||
| Hae-Chang Cho,Deuck Hang Lee,Hyunjin Ju and Kang Su Kim : Department of Architectural Engineering, University of Seoul, 163 Seoulsiripdaero, Dongdaemun-gu, Seoul 130-743, Republic of Korea Ki-Hyun Kim and Paulo J.M.Monteiro : Department of Civil & Environmental Engineering, University of California, 725 Davis Hall, Berkeley,CA 94720, USA | ||