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CONCRETE COMPOSITION KNEADING METHOD AND CONCRETE COMPOSITION PRODUCTION METHOD
To provide a concrete composition kneading method capable of reducing the kneading time of a concrete composition having a low water-binding material ratio and comprising silica fume, and a concrete composition production method.SOLUTION: A concrete composition kneading method comprises: a first kneading step where first cement C1, first silica fume SF1, a fine aggregate and a coarse aggregate are kneaded to obtain a first kneaded material; a second kneading step where the first kneaded material, water and an additive are kneaded to obtain a second kneaded material; and a third kneading step where the second kneaded material, second cement C2 and second silica fume SF2 are kneaded to obtain a third kneaded material. A water-kneading material ratio (W/(C+SF)) is 25 mass% or less, and the mass ratio of the total content of the first cement and the first silica fume satisfies the following inequality (1): 0.40≤(C1+SF1)/(C+SF)≤0.60(1).SELECTED DRAWING: None
【課題】水結合材比が低く、かつ、シリカフュームを含有するコンクリート組成物の練混ぜ時間を短縮することができるコンクリート組成物の混練方法、及び、コンクリート組成物の製造方法を提供することを課題とする。【解決手段】本発明に係るコンクリート組成物の混練方法は、第一セメントC1と、第一シリカフュームSF1と、細骨材と、粗骨材と、を混練して第一混練物を得る第一混練工程と、前記第一混練物と、水と、混和剤と、を混練して第二混練物を得る第二混練工程と、前記第二混練物と、第二セメントC2と、第二シリカフュームSF2と、を混練して第三混練物を得る第三混練工程と、を備え、水結合材比(W/(C+SF))が25質量%以下であり、セメントC及びシリカフュームSFの合計含有量に対する、前記第一セメント及び前記第一シリカフュームの合計含有量の質量割合が下記式(1)を満たす。0.40≦(C1+SF1)/(C+SF)≦0.60 (1)【選択図】なし
CONCRETE COMPOSITION KNEADING METHOD AND CONCRETE COMPOSITION PRODUCTION METHOD
To provide a concrete composition kneading method capable of reducing the kneading time of a concrete composition having a low water-binding material ratio and comprising silica fume, and a concrete composition production method.SOLUTION: A concrete composition kneading method comprises: a first kneading step where first cement C1, first silica fume SF1, a fine aggregate and a coarse aggregate are kneaded to obtain a first kneaded material; a second kneading step where the first kneaded material, water and an additive are kneaded to obtain a second kneaded material; and a third kneading step where the second kneaded material, second cement C2 and second silica fume SF2 are kneaded to obtain a third kneaded material. A water-kneading material ratio (W/(C+SF)) is 25 mass% or less, and the mass ratio of the total content of the first cement and the first silica fume satisfies the following inequality (1): 0.40≤(C1+SF1)/(C+SF)≤0.60(1).SELECTED DRAWING: None
【課題】水結合材比が低く、かつ、シリカフュームを含有するコンクリート組成物の練混ぜ時間を短縮することができるコンクリート組成物の混練方法、及び、コンクリート組成物の製造方法を提供することを課題とする。【解決手段】本発明に係るコンクリート組成物の混練方法は、第一セメントC1と、第一シリカフュームSF1と、細骨材と、粗骨材と、を混練して第一混練物を得る第一混練工程と、前記第一混練物と、水と、混和剤と、を混練して第二混練物を得る第二混練工程と、前記第二混練物と、第二セメントC2と、第二シリカフュームSF2と、を混練して第三混練物を得る第三混練工程と、を備え、水結合材比(W/(C+SF))が25質量%以下であり、セメントC及びシリカフュームSFの合計含有量に対する、前記第一セメント及び前記第一シリカフュームの合計含有量の質量割合が下記式(1)を満たす。0.40≦(C1+SF1)/(C+SF)≦0.60 (1)【選択図】なし
CONCRETE COMPOSITION KNEADING METHOD AND CONCRETE COMPOSITION PRODUCTION METHOD
コンクリート組成物の混練方法、及び、コンクリート組成物の製造方法
KOTABE YUICHI (author) / MIURA SHINJI (author) / FUNAO TAKAYOSHI (author)
2023-01-04
Patent
Electronic Resource
Japanese
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