| 種別 | paper |
| 主題 | A Study on Frost Resistance and Strength Properties of High Strength Concrete Using Andesite and Limestone |
| 副題 | |
| 筆頭著者 | Mahmoud NILI（Graduate School of Hokkaido University） |
| 連名者1 | Eiji KAMADA（Hokkaido University） |
| 連名者2 | Osamu KATSURA（Cold Region Housing and Urban Research Institute） |
| 連名者3 | Toshiyuki YOSHINO（Cold Region Housing and Urban Research Institute） |
| 連名者4 | |
| 連名者5 | |
| キーワード | high strength concrete, frost resistance, compressive strength, modulus of elasticity, experimental design method, andesite, limestone, thermal coefficient |
| 巻 | 14 |
| 号 | 1 |
| 先頭ページ | 1167 |
| 末尾ページ | 1172 |
| 年度 | 1992 |
| 要旨 | ABSTRACT Frost resistance and strength properties of high strength concrete are experimentally evaluated to find out the factors, which affect these two important properties of concrete. Twelve factors, namely type of coarse aggregate, surface condition of coarse and fine aggregates, mixing and casting procedures, removal age, type of mold, type of mixer and the testing machine are assumed to be paramount importance. An experimental design analysis was carried out to evaluate the affecting factors simultaneously. Despite the low water-cement ratio, deterioration of the specimens during freeze-thaw cycles were observed. The analyses variance indicate that, the type of coarse aggregate, mixing and casting procedures strongly affect both the frost resistance and the strength properties. Using andesite as the coarse aggregate produced a concrete with significantly higher compressive strength and frost resistance than that of with limestone. The results of thermal coefficient measurement of the coarse aggregate declare that, the low thermal coefficint of the limestone compared with andesite, may be responsible for low frost resistance of the limestone concretes. |
| PDFファイル名 | 014-01-1202.pdf |