Concrete Mix Design for Service Life of RC Structures under Carbonation Using Genetic Algorithm
Steel corrosion in reinforced concrete (RC) structure is such a critical problem to structural safety that many researches have been performed for maintaining required performance during intended service life. This paper is for a numerical technique for obtaining optimum concrete mix proportions thr...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2014/653753 |
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| author | Seung-Jun Kwon Byung Jae Lee Yun Yong Kim |
| author_facet | Seung-Jun Kwon Byung Jae Lee Yun Yong Kim |
| author_sort | Seung-Jun Kwon |
| collection | DOAJ |
| description | Steel corrosion in reinforced concrete (RC) structure is such a critical problem to structural safety that many researches have been performed for maintaining required performance during intended service life. This paper is for a numerical technique for obtaining optimum concrete mix proportions through genetic algorithm (GA) for RC structures under carbonation which is considered as a serious deterioration in underground sites and big cities. For this study, mix proportions and CO2 diffusion coefficients are analyzed through the previous studies, and then the fitness function of CO2 diffusion coefficient is derived through regression analysis. The fitness function from 69 test results includes 5 variables of mix proportions such as w/c (water to cement) ratio, cement content, sand content percentage, coarse aggregate content, and R.H. (relative humidity). Through GA technique, simulated mix proportions are obtained for 12 cases of verification and they show reasonable results with average relative error of 4.6%. Assuming intended service life and design parameters, intended CO2 diffusion coefficients and cement contents are determined and then related mix proportions are simulated. The proposed technique can provide initial concrete mix proportions which satisfy service life under carbonation. |
| format | Article |
| id | doaj-art-24a6e2e1335a4f10b0443a11426c2e9a |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-24a6e2e1335a4f10b0443a11426c2e9a2025-02-03T01:12:09ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422014-01-01201410.1155/2014/653753653753Concrete Mix Design for Service Life of RC Structures under Carbonation Using Genetic AlgorithmSeung-Jun Kwon0Byung Jae Lee1Yun Yong Kim2Department of Civil and Environmental Engineering, Hannam University, 133 Ojeong-dong, Daedeok-gu, Daejeon 306-791, Republic of KoreaDepartment of Civil Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, Republic of KoreaDepartment of Civil Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, Republic of KoreaSteel corrosion in reinforced concrete (RC) structure is such a critical problem to structural safety that many researches have been performed for maintaining required performance during intended service life. This paper is for a numerical technique for obtaining optimum concrete mix proportions through genetic algorithm (GA) for RC structures under carbonation which is considered as a serious deterioration in underground sites and big cities. For this study, mix proportions and CO2 diffusion coefficients are analyzed through the previous studies, and then the fitness function of CO2 diffusion coefficient is derived through regression analysis. The fitness function from 69 test results includes 5 variables of mix proportions such as w/c (water to cement) ratio, cement content, sand content percentage, coarse aggregate content, and R.H. (relative humidity). Through GA technique, simulated mix proportions are obtained for 12 cases of verification and they show reasonable results with average relative error of 4.6%. Assuming intended service life and design parameters, intended CO2 diffusion coefficients and cement contents are determined and then related mix proportions are simulated. The proposed technique can provide initial concrete mix proportions which satisfy service life under carbonation.http://dx.doi.org/10.1155/2014/653753 |
| spellingShingle | Seung-Jun Kwon Byung Jae Lee Yun Yong Kim Concrete Mix Design for Service Life of RC Structures under Carbonation Using Genetic Algorithm Advances in Materials Science and Engineering |
| title | Concrete Mix Design for Service Life of RC Structures under Carbonation Using Genetic Algorithm |
| title_full | Concrete Mix Design for Service Life of RC Structures under Carbonation Using Genetic Algorithm |
| title_fullStr | Concrete Mix Design for Service Life of RC Structures under Carbonation Using Genetic Algorithm |
| title_full_unstemmed | Concrete Mix Design for Service Life of RC Structures under Carbonation Using Genetic Algorithm |
| title_short | Concrete Mix Design for Service Life of RC Structures under Carbonation Using Genetic Algorithm |
| title_sort | concrete mix design for service life of rc structures under carbonation using genetic algorithm |
| url | http://dx.doi.org/10.1155/2014/653753 |
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