初期に高温履歴を受けた構造体コンクリートの簡易的な圧縮強度推定方法に関する研究
2004 年 69 巻 579 号 p. 7-14
詳細
2004 年 69 巻 579 号 p. 7-14
It is well known that the long-term strength of high strength concrete in structure subject to high temperature history at early age is lower than that of standard cured specimens. Nevertheless, simple methods of estimating the strength of concrete in such structure have not been established yet. In this paper, a simple method for estimating the compressive strength of concrete in structure subject to high temperature history at early age using the compressive strength of standard cured specimen was investigated. Through this investigation, a strength development model relating the compressive strength to the logarithmic aging time has been suggested. The kind of binder, maximum temperature, and the water-binder ratio has been taken into consideration as the parameters that influence strength development. The results obtained through this method were compared and found to be similar to about 200 site experiment data, indicating that the method is of practical use.
