Modeling Chloride Diffusion Coefficient of Steel Fiber Reinforced Concrete under Bending Load
The chloride diffusion coefficient is the most important parameter when predicting chloride ingress in concrete. This paper proposed a model for calculating the chloride diffusion coefficient of steel fiber reinforced concrete (SFRC). Considering the concrete structures in service are usually subjec...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/3789214 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832549414944636928 |
|---|---|
| author | Qiannan Wang Wei Sun Liping Guo Chunping Gu Jinyu Zong |
| author_facet | Qiannan Wang Wei Sun Liping Guo Chunping Gu Jinyu Zong |
| author_sort | Qiannan Wang |
| collection | DOAJ |
| description | The chloride diffusion coefficient is the most important parameter when predicting chloride ingress in concrete. This paper proposed a model for calculating the chloride diffusion coefficient of steel fiber reinforced concrete (SFRC). Considering the concrete structures in service are usually subjected to external loads, the effect of bending load was discussed and expressed with a stress factor ks in the model. The chloride diffusion coefficient of cement paste was calculated with capillary porosity and then used to predict the chloride diffusion coefficient of SFRC. Some factors in the model were determined with experimental results. Chloride bulk diffusion tests were performed on SFRC and plain concrete (without fiber) specimens under bending load. SFRC showed slightly better chloride resistance for unstressed specimens. The compressive stress decreased the chloride diffusion coefficient of SFRC, while it caused no change in plain concrete. For the tensile zone, the chloride resistance of concrete was improved significantly by adding steel fibers. Overall, SFRC performed better chloride resistance, especially under bending load. The proposed model provides a simple approach for calculating the chloride diffusion coefficient of SFRC under bending load. |
| format | Article |
| id | doaj-art-f864dbf67a714f9e81a40e8f3338fe2e |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-f864dbf67a714f9e81a40e8f3338fe2e2025-02-03T06:11:29ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/37892143789214Modeling Chloride Diffusion Coefficient of Steel Fiber Reinforced Concrete under Bending LoadQiannan Wang0Wei Sun1Liping Guo2Chunping Gu3Jinyu Zong4School of Materials Science & Engineering, Southeast University, Nanjing 211189, ChinaSchool of Materials Science & Engineering, Southeast University, Nanjing 211189, ChinaSchool of Materials Science & Engineering, Southeast University, Nanjing 211189, ChinaCollege of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, ChinaSchool of Materials Science & Engineering, Southeast University, Nanjing 211189, ChinaThe chloride diffusion coefficient is the most important parameter when predicting chloride ingress in concrete. This paper proposed a model for calculating the chloride diffusion coefficient of steel fiber reinforced concrete (SFRC). Considering the concrete structures in service are usually subjected to external loads, the effect of bending load was discussed and expressed with a stress factor ks in the model. The chloride diffusion coefficient of cement paste was calculated with capillary porosity and then used to predict the chloride diffusion coefficient of SFRC. Some factors in the model were determined with experimental results. Chloride bulk diffusion tests were performed on SFRC and plain concrete (without fiber) specimens under bending load. SFRC showed slightly better chloride resistance for unstressed specimens. The compressive stress decreased the chloride diffusion coefficient of SFRC, while it caused no change in plain concrete. For the tensile zone, the chloride resistance of concrete was improved significantly by adding steel fibers. Overall, SFRC performed better chloride resistance, especially under bending load. The proposed model provides a simple approach for calculating the chloride diffusion coefficient of SFRC under bending load.http://dx.doi.org/10.1155/2018/3789214 |
| spellingShingle | Qiannan Wang Wei Sun Liping Guo Chunping Gu Jinyu Zong Modeling Chloride Diffusion Coefficient of Steel Fiber Reinforced Concrete under Bending Load Advances in Civil Engineering |
| title | Modeling Chloride Diffusion Coefficient of Steel Fiber Reinforced Concrete under Bending Load |
| title_full | Modeling Chloride Diffusion Coefficient of Steel Fiber Reinforced Concrete under Bending Load |
| title_fullStr | Modeling Chloride Diffusion Coefficient of Steel Fiber Reinforced Concrete under Bending Load |
| title_full_unstemmed | Modeling Chloride Diffusion Coefficient of Steel Fiber Reinforced Concrete under Bending Load |
| title_short | Modeling Chloride Diffusion Coefficient of Steel Fiber Reinforced Concrete under Bending Load |
| title_sort | modeling chloride diffusion coefficient of steel fiber reinforced concrete under bending load |
| url | http://dx.doi.org/10.1155/2018/3789214 |
| work_keys_str_mv | AT qiannanwang modelingchloridediffusioncoefficientofsteelfiberreinforcedconcreteunderbendingload AT weisun modelingchloridediffusioncoefficientofsteelfiberreinforcedconcreteunderbendingload AT lipingguo modelingchloridediffusioncoefficientofsteelfiberreinforcedconcreteunderbendingload AT chunpinggu modelingchloridediffusioncoefficientofsteelfiberreinforcedconcreteunderbendingload AT jinyuzong modelingchloridediffusioncoefficientofsteelfiberreinforcedconcreteunderbendingload |