A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CONCRETE COMPOSITION, CONCRETE AND REINFORCED CONCRETE CONSTRUCTION METHOD
To provide a concrete composition, which is particularly suitable for a reinforced concrete (RC) construction, and has properties such as light weight, high strength, high durability, and high fluidity, and to provide a concrete, and a reinforced concrete construction method.SOLUTION: In a concrete composition of the present invention, a filler having a particle size range of 1 to 10 μm is added to a hydraulic cement having a particle size range of 10 to 100 μm in a range of 25 to 40% of a volume of powder, which is an absolute volume of the hydraulic cement plus an absolute volume of the filler; a kneaded composition having a water/cement ratio in a range of 16-25% is formed by mixing and kneading water that contains lightweight aggregates, such as a fine aggregate and a coarse aggregate, a surfactant as a dispersing agent for a hydraulic cement and a filler, and an air entraining agent for adjusting the density of the concrete to be formed; the concrete obtained after hardening the kneaded composition is prepared to have a density according to JIS A 1116 of 1.87 g/cm3 or less, and a compressive strength of 60 N/mm2 or more.SELECTED DRAWING: None
【課題】特に鉄筋コンクリート（ＲＣ）の施工に好適な、軽量且つ高強度、高耐久性及び高流動性等の特性を有するコンクリート組成物、コンクリート、及び鉄筋コンクリートの施工法を提供する。【解決手段】本発明のコンクリート組成物は、１０～１００μｍの粒度範囲にある水硬性セメントに、粒度範囲が１～１０μｍのフィラーが、水硬性セメントの絶対容積＋フィラーの絶対容積である粉体の体積に対して２５～４０％の範囲で加えられ、軽量骨材である細骨材や粗骨材、水硬性セメントやフィラーの分散剤としての界面活性剤、形成されるコンクリートの密度調整のための空気連行剤を含む水が混合されて練り混ぜられることで、水／セメント比が１６～２５％の範囲の混練組成物が形成され、それを硬化させたコンクリートが、ＪＩＳ Ａ １１１６による密度が１.８７ｇ／ｃｍ3以下で、圧縮強度が６０Ｎ／ｍｍ2以上、となるように調製されている。【選択図】なし
CONCRETE COMPOSITION, CONCRETE AND REINFORCED CONCRETE CONSTRUCTION METHOD
To provide a concrete composition, which is particularly suitable for a reinforced concrete (RC) construction, and has properties such as light weight, high strength, high durability, and high fluidity, and to provide a concrete, and a reinforced concrete construction method.SOLUTION: In a concrete composition of the present invention, a filler having a particle size range of 1 to 10 μm is added to a hydraulic cement having a particle size range of 10 to 100 μm in a range of 25 to 40% of a volume of powder, which is an absolute volume of the hydraulic cement plus an absolute volume of the filler; a kneaded composition having a water/cement ratio in a range of 16-25% is formed by mixing and kneading water that contains lightweight aggregates, such as a fine aggregate and a coarse aggregate, a surfactant as a dispersing agent for a hydraulic cement and a filler, and an air entraining agent for adjusting the density of the concrete to be formed; the concrete obtained after hardening the kneaded composition is prepared to have a density according to JIS A 1116 of 1.87 g/cm3 or less, and a compressive strength of 60 N/mm2 or more.SELECTED DRAWING: None
【課題】特に鉄筋コンクリート（ＲＣ）の施工に好適な、軽量且つ高強度、高耐久性及び高流動性等の特性を有するコンクリート組成物、コンクリート、及び鉄筋コンクリートの施工法を提供する。【解決手段】本発明のコンクリート組成物は、１０～１００μｍの粒度範囲にある水硬性セメントに、粒度範囲が１～１０μｍのフィラーが、水硬性セメントの絶対容積＋フィラーの絶対容積である粉体の体積に対して２５～４０％の範囲で加えられ、軽量骨材である細骨材や粗骨材、水硬性セメントやフィラーの分散剤としての界面活性剤、形成されるコンクリートの密度調整のための空気連行剤を含む水が混合されて練り混ぜられることで、水／セメント比が１６～２５％の範囲の混練組成物が形成され、それを硬化させたコンクリートが、ＪＩＳ Ａ １１１６による密度が１.８７ｇ／ｃｍ3以下で、圧縮強度が６０Ｎ／ｍｍ2以上、となるように調製されている。【選択図】なし
CONCRETE COMPOSITION, CONCRETE AND REINFORCED CONCRETE CONSTRUCTION METHOD
コンクリート組成物、コンクリート及び鉄筋コンクリートの施工法
TSURUTA TAKESHI (author) / TSUJI MASAAKI (author)
2023-12-07
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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