A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CONCRETE COMPOSITION
To provide a concrete composition that is less susceptible to variations in external factors, has high fluidity during its pouring, retains its fresh properties, hardly gets separated in water, and can express high strength after its curing.SOLUTION: A concrete composition contains water, cement, aggregate and admixtures. The admixtures include a high-range water-reducing agent defined in JIS A6204, a setting retarder having a water-reducing rate of less than 4% as measured in accordance with JIS A6204, a thickener containing alkyl allyl sulfonate and alkyl ammonium salt, and a nonionic surfactant. Preferably, the content of each admixture is in a predetermined range.SELECTED DRAWING: None
【課題】外的要因の変動による影響を受けにくく、打設時の流動性やフレッシュ保持性、水中不分離性を良好に兼ね備え、且つ硬化後に優れた強度を発現できるコンクリート組成物を提供すること。【解決手段】本発明のコンクリート組成物は、水、セメント、骨材及び混和材料を含み、混和材料として、ＪＩＳ Ａ６２０４に規定される高性能減水剤、ＪＩＳ Ａ６２０４に準じて測定される減水率が４％未満である凝結遅延剤、アルキルアリルスルホン酸塩とアルキルアンモニウム塩とを含む増粘剤、及びノニオン系界面活性剤を含む。各混和材料の含有量をそれぞれ所定の範囲とすることも好適である。【選択図】なし
CONCRETE COMPOSITION
To provide a concrete composition that is less susceptible to variations in external factors, has high fluidity during its pouring, retains its fresh properties, hardly gets separated in water, and can express high strength after its curing.SOLUTION: A concrete composition contains water, cement, aggregate and admixtures. The admixtures include a high-range water-reducing agent defined in JIS A6204, a setting retarder having a water-reducing rate of less than 4% as measured in accordance with JIS A6204, a thickener containing alkyl allyl sulfonate and alkyl ammonium salt, and a nonionic surfactant. Preferably, the content of each admixture is in a predetermined range.SELECTED DRAWING: None
【課題】外的要因の変動による影響を受けにくく、打設時の流動性やフレッシュ保持性、水中不分離性を良好に兼ね備え、且つ硬化後に優れた強度を発現できるコンクリート組成物を提供すること。【解決手段】本発明のコンクリート組成物は、水、セメント、骨材及び混和材料を含み、混和材料として、ＪＩＳ Ａ６２０４に規定される高性能減水剤、ＪＩＳ Ａ６２０４に準じて測定される減水率が４％未満である凝結遅延剤、アルキルアリルスルホン酸塩とアルキルアンモニウム塩とを含む増粘剤、及びノニオン系界面活性剤を含む。各混和材料の含有量をそれぞれ所定の範囲とすることも好適である。【選択図】なし
CONCRETE COMPOSITION
コンクリート組成物
KATO KIYOTAKA (author) / IWANAGA SUNAO (author) / NAKAMURA SEIKI (author)
2022-08-25
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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