2 寒中に施工したコンクリートの強度推定について : 普通ポルトランドセメントの場合

概要

論文の詳細を見る
It is necessary to estimate the strength of concrete particularly in the case of winter concreting for the protection of concrete against repeated freezing and thawing and with a view to determination of the time for removal of forms. An attempt to apply the time-temperature function suggested by Saul and Bergstrom has been made and the method for estimation of concrete strength is developed by the author. The prediction of strength development of concrete is showed by two curves connected at 210°D・D ((θ+10)°・Day). These curves are simple and obtained without difficulty by use of a semilogarithmic paper from the strength of cement tested by the standard testing method in Japan. For different types of cement, the curves can be changed by a simple method and are capable to estimate concrete strength with safety. The author presented that the capability to apply the obtained curves for estimation of concrete strength for the dicision of the quality of concrete against frost damage, and of the sensitiveness of cement against temperature and of the lowering tendency of concrete strength by drying.
社団法人日本建築学会の論文
1958-07-25