約5年間の実測データに基づくコンクリートのクリープ・収縮寸法効果の評価とクリープ予測方法の提案

概要

論文の詳細を見る
It is well known that size of concrete member strongly affects its creep and shrinkage behaviors. In this study, creep and shrinkage strains of 50 and 130MPa concretes in various size square columns were measured for about 5 years. The effects of size on shrinkage and creep were discussed through comparisons between the observed values and the calculated values by CEB-FIP 1990 and JSCE model codes. The results showed that these models, especially CEB-FIP 1990 Model Code (MC90) codes, could evaluate the relative changes of creep and shrinkage due to specimen size. This might indicate that the combination of accurate shrinkage and creep evaluations of reference specimen (Ex. 10cm square column) and the size effect factor of MC90 enables the correct evaluation of shrinkage and creep of various size square columns. In this paper, a revised MC90 adjusted to creep data in Japan was also proposed.
社団法人日本建築学会の論文
2005-07-30