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A platform for research: civil engineering, architecture and urbanism
ADMIXTURE FOR HYDRAULIC COMPOSITION AND HYDRAULIC COMPOSITION
To provide an admixture for a hydraulic composition useful for fixing carbon dioxide gas and capable of obtaining a hardened body with suppressed drying shrinkage strain, and to provide the hydraulic composition which includes the admixture for the hydraulic composition and which can obtain the hardened body with a high amount of carbon dioxide gas fixation and suppressed drying shrinkage strain.SOLUTION: An admixture for a hydraulic composition comprises a modified concrete powder which has a 50% particle size of 50 μm or less and is a reaction product of a recycled concrete powder and carbon dioxide gas, the modified concrete powder containing calcium carbonate and a silicate. The hydraulic composition comprising the admixture therefor is also provided.SELECTED DRAWING: None
【課題】炭酸ガス固定化に有用であり、乾燥収縮ひずみが抑制された硬化体を得ることができる水硬性組成物用混和剤材及び水硬性組成物用混和剤材を含む、炭酸ガス固定量が高く、乾燥収縮ひずみが抑制された硬化体を得ることができる水硬性組成物を提供する。【解決手段】５０％粒径５０μｍ以下であって、再生コンクリート粉末と炭酸ガスとの反応生成物である改質コンクリート粉末を含み、前記改質コンクリート粉末は、炭酸カルシウムと、ケイ酸質とを含む水硬性組成物用混和材、及び該水硬性組成物用混和材を含む水硬性組成物。【選択図】なし
ADMIXTURE FOR HYDRAULIC COMPOSITION AND HYDRAULIC COMPOSITION
To provide an admixture for a hydraulic composition useful for fixing carbon dioxide gas and capable of obtaining a hardened body with suppressed drying shrinkage strain, and to provide the hydraulic composition which includes the admixture for the hydraulic composition and which can obtain the hardened body with a high amount of carbon dioxide gas fixation and suppressed drying shrinkage strain.SOLUTION: An admixture for a hydraulic composition comprises a modified concrete powder which has a 50% particle size of 50 μm or less and is a reaction product of a recycled concrete powder and carbon dioxide gas, the modified concrete powder containing calcium carbonate and a silicate. The hydraulic composition comprising the admixture therefor is also provided.SELECTED DRAWING: None
【課題】炭酸ガス固定化に有用であり、乾燥収縮ひずみが抑制された硬化体を得ることができる水硬性組成物用混和剤材及び水硬性組成物用混和剤材を含む、炭酸ガス固定量が高く、乾燥収縮ひずみが抑制された硬化体を得ることができる水硬性組成物を提供する。【解決手段】５０％粒径５０μｍ以下であって、再生コンクリート粉末と炭酸ガスとの反応生成物である改質コンクリート粉末を含み、前記改質コンクリート粉末は、炭酸カルシウムと、ケイ酸質とを含む水硬性組成物用混和材、及び該水硬性組成物用混和材を含む水硬性組成物。【選択図】なし
ADMIXTURE FOR HYDRAULIC COMPOSITION AND HYDRAULIC COMPOSITION
水硬性組成物用混和材及び水硬性組成物
KOJIMA MASAO (author) / NISHIOKA YUKIKO (author) / KATAMURA SHOGO (author) / MATSUSHITA TETSURO (author) / IKEO YOSAKU (author) / KAWAJIRI SATOSHI (author) / KONO TAKAO (author) / YANAGIBASHI KUNIO (author) / FUJITA TAKAHITO (author) / SUGIMOTO MINAMI (author)
2023-12-26
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
Admixture for hydraulic composition and hydraulic composition
| European Patent Office | 2023
ADMIXTURE FOR HYDRAULIC COMPOSITION AND HYDRAULIC COMPOSITION
| European Patent Office | 2022