Characteristic of Chloride Ion Diffusion in Mortar Mixed with Ion-Exchange Resin
| Autor: | Osamu Sanada, Nobuhito Inoue, Hiroshi Mutsuyoshi, Shingo Asamoto |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Concrete Research and Technology. 24:123-134 |
| ISSN: | 2186-2745 1340-4733 |
| DOI: | 10.3151/crt.24.123 |
| Popis: | Recently, a number of concrete structures constructed several decades earlier are showing significant degradation, especially in coastal areas. For the effective repair and reinforcement of such structures, the development of high performance repairing material is required. Meanwhile, ion exchange resin has traditionally been used to remove impurities such as chloride in the process of cleaning industrial wastewater and manufacturing pure water. In this study, for the purpose of removing the chloride in deteriorated concrete structures, the application of ion exchange resin to repairing material is investigated. Firstly, the effect of ion exchange resin on the adsorption of chloride ion in mortar is examined by chemical analysis. The diffusion of chloride in mortar with ion exchange resin is experimentally and numerically studied. Finally, it is experimentally verified that the chloride in mortar is removed by inverse diffusion due to the ion exchange resin.近年，塩害地域に位置し，供用後数十年経過しているコンクリート構造物への補修・補強事例が増える中，補修・補強材料としての高性能材料が求められている。一方，工業用水や純水の製造過程では，塩化物等の不純物の除去を目的に従来からイオン交換樹脂が用いられており，その特性は明らかにされている。本論文では，イオン交換樹脂が持つ塩化物イオンの吸着性能に着目し，化学的分析によるイオン交換樹脂の塩化物イオン吸着効果の検証，塩分浸漬実験による全塩化物量の定量，イオン交換樹脂を混入したモルタルの塩化物イオン拡散に関する数値解析，イオン交換樹脂による塩化物の除塩特性を検証する実験を行い，イオン交換樹脂を混和したモルタルの塩化物イオン拡散特性を論じたものである。 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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