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DEVELOPMENT OF A PHYSICAL AND GEOCHEMICAL MODEL FOR LONG-TERM PERFORMANCE OF CEMENTITIOUS MATERIALS
http://hdl.handle.net/10173/1009
http://hdl.handle.net/10173/1009128b0576-3631-4bc5-b01e-ff64046c5667
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
sms12-0768.pdf (369.7 kB)
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| Item type | 会議発表論文 / Conference Paper(1) | |||||||||
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| 公開日 | 2013-10-25 | |||||||||
| タイトル | ||||||||||
| タイトル | DEVELOPMENT OF A PHYSICAL AND GEOCHEMICAL MODEL FOR LONG-TERM PERFORMANCE OF CEMENTITIOUS MATERIALS | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Modeling | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Durability | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | DuCOM | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | PHREEQC | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||||||
| 資源タイプ | conference paper | |||||||||
| 著者 |
ELAKNESWARAN, Yogarajah
× ELAKNESWARAN, Yogarajah
× ISHIDA, Tetsuya
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| 抄録 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | The deterioration of reinforced concrete is a major problem worldwide and hence the material issues are important in the entire process of infrastructures management. A simulation tool is necessary to evaluate the long-term performance of cementitious materials in various environments, consequently on safety assessment. This requires a good understanding of the underlying process affecting the performance of cementitious materials exposed to range of environmental conditions. The long-term performance of concrete structures do expose to aggressive environment has been investigating, however still more works are needed. A method is needed to take into account the fundamental physical and geochemical reactions resulting due to detrimental effects during the service-life of concrete structures. In this study, a coupled physical and geochemical model is developed for the prediction of long-term performance of cementitious materials. DuCOM (Durability COncrete Model) and geochemical code PHREEQC were used for this purpose. The coupled model allows predicting the spatial and time variation of minerals compositions, pore water concentrations, and other hydration and pore structures properties. In addition, it provides to a better understanding of the underlying mechanisms, which govern the degradation of cementitious materials. A part of simulation results have been compared with experimental data. The detailed experimental works have been considered for the further verification of the model. The sulfate ingress into concrete was analyzed in order to investigate the capability of the model. The simulation results are able to reproduce mineralogical alteration due to chemical reactions and sulfate ingress. It can be inferred that the developed model will be a useful tool to assess the performance of cementitious materials in aggressive environments, and thus provides a consistent platform in the management of concrete infrastructures. | |||||||||
| 書誌情報 |
Society for Social Management Systems Internet Journal 巻 8, 発行日 2012-05 |
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| 著者版フラグ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
| 出版者 | ||||||||||
| 出版者 | Society for Social Management Systems | |||||||||
