減水剤を用いたコンクリートの減水と強度に関する研究

概要

論文の詳細を見る
To examine the effectiveness of water-reducing agents, typical one air-entraining agent, eight water-reducing admixtures and ten brands of normal protland cement now widely distributed throughout our country have been selected and used with some combinations. Comparative tests have been performed of fresh concrete with respect to its water-reduction, bleeding and initial hardening, and of hardened concrete with respect to its strength gain, all these with the above-mentioned admixture, and, for contrast, of the control concrete having the same cement content of 300 kg/m^3 and consistency of 7.5 cm without the critical admixture. The results of the tests show that the good quality of water-reducing admixtures can reduce water requirement by 10 to 15 percent, bleeding per unit area by more than 30 percent and give higher compressive strength without any harmful effect on setting.
社団法人日本材料学会の論文
1967-08-15