| 種別 | paper |
| 主題 | Corrosion of Steel Bars in 15-year Old Pre-cracked Specimens Made with Ordinary Poltland, Slag and Fly Ash Cements |
| 副題 | |
| 筆頭著者 | Tarek Uddin Mohammed（Independent Administrative Institution） |
| 連名者1 | Toru Yamaji（Independent Administrative Institution） |
| 連名者2 | Toshiyuki Aoyama（PS Corporation） |
| 連名者3 | Hidenori Hamada（Independent Administrative Institution） |
| 連名者4 | |
| 連名者5 | |
| キーワード | chloride ingress, corrosion, precracked concrete, fly ash cement, crack healing, ordinary portland cement, slag cement, tidal environment. |
| 巻 | 23 |
| 号 | 2 |
| 先頭ページ | 571 |
| 末尾ページ | 576 |
| 年度 | 2001 |
| 要旨 | A detailed investigation on the 15 years old precracked concrete specimens made with ordinary portland, slag (Type A, B and C) and fly ash (Type B) cements exposed in the tidal environment was carried out. Based on the results of this investigation, the chloride ingress as well as the degree of corrosion of steel bars in concrete is sequenced as OPC>FACB>SCA>SCB>SCC for narrow cracks (≦0.5mm), Narrow cracks heal irrespective of the cement types. Wide cracks are not healed and caused the formation of bottle-neck due to the severe corrosion around the perimeter of the bar. The presence of voids at the steel-concrete interface causes the formation of corrosiop pits at the uncracked regions as well. |
| PDFファイル名 | 023-01-2096.pdf |