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The influence of temperature and humidity on rust growth on weathering steel |
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| รหัสดีโอไอ | |
| Title | The influence of temperature and humidity on rust growth on weathering steel |
| Creator | Ryoya Nagata, Toshihiko Aso, Shusaku Tachibana |
| Contributor | - |
| Publisher | ISEC PRESS |
| Publication Year | 2559 |
| Keyword | Weathering steel, Rust, Salinity, Temperature, Humidity |
| Abstract | In order to achieve a long life of weathering steel bridges, resolution of several problems are required. Especially, rust evaluation technology, rust prediction method and repair technology of corroded weathering steel, reveal the rust growth progress characteristics under constant temperature and humidity environment. Steel test pieces, which were different concentration (0.3%, 1.0%, 3.0%) of salt water sprayed, were placed in a constant temperature and humidity test vessel, to observe the progress of rust in in-plane direction. Four pattern of exposure environment were tested, that were combination of temperature (40โ, 20โ) and relative humidity (50%, 95%). To calculate the increase of rust are, specimen surface was confirmed that higher salt concentration (3%) brought rapid rust development. Furthermore, the increase of rust area was highly dependent on temperature than humidity. From time observations, it becomes clear that increase of rust area can be approximated to a logarithmic curve. |
| ISBN | 978-0-9960437-3-1 |
