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A platform for research: civil engineering, architecture and urbanism
METHOD FOR PRODUCING HYDRAULIC CURED BODY AND CEMENT COMPOSITION FOR CARBONATION CURING
To provide a method for producing a hydraulic cured body excellent in workability, low in carbon dioxide gas discharge in production, having a carbon dioxide fixing property and good in strength, and a cement composition for carbonation curing.SOLUTION: A method for producing a hydraulic cured body includes curing and carbonating a cement composition that contains water, a mixed cement containing a blast furnace slag fine powder and cement, calcium hydroxide, and a setting retarding agent to produce the hydraulic cured body. The cement composition contains 10 pts.mass or more and 70 pts.mass or less of the calcium hydroxide relative to 100 pts.mass of the total amount of the blast furnace slag fine powder, the cement and the calcium hydroxide, 30 pts.mass or more and 1,400 pts.mass or less of the calcium hydroxide relative to 100 pts.mass of the blast furnace slag fine powder, 270 kg/m3 or more and 600 kg/m3 or less in total of the blast furnace slag fine powder, the cement and the calcium hydroxide, and 25 pts.mass or more and 65 pts.mass or less of the water relative to 100 pts.mass of the total amount of the blast furnace slag fine powder, the cement and the calcium hydroxide.SELECTED DRAWING: None
【課題】作業性に優れ、製造時の炭酸ガス排出量が少なく、炭酸ガス固定化機能を有し、強度が良好な水硬性硬化体の製造方法および炭酸化養生用セメント組成物を提供する。【解決手段】本発明の水硬性硬化体の製造方法は、水と、高炉スラグ微粉末とセメントとを含む混合セメントと、水酸化カルシウムと、凝結遅延剤と、を含有するセメント組成物を、硬化および炭酸化養生し、水硬性硬化体を製造する、水硬性硬化体の製造方法であって、前記セメント組成物は、前記水酸化カルシウムを、前記高炉スラグ微粉末と前記セメントと前記水酸化カルシウムの合計量の１００質量部に対して１０質量部以上７０質量部以下含有し、前記水酸化カルシウムを、前記高炉スラグ微粉末１００質量部に対して３０質量部以上１４００質量部以下含有し、前記高炉スラグ微粉末と前記セメントと前記水酸化カルシウムを合計で２７０ｋｇ／ｍ３以上６００ｋｇ／ｍ３以下含有し、前記水を、前記高炉スラグ微粉末と前記セメントと前記水酸化カルシウムの合計量の１００質量部に対して、２５質量部以上６５質量部以下含有する。【選択図】なし
METHOD FOR PRODUCING HYDRAULIC CURED BODY AND CEMENT COMPOSITION FOR CARBONATION CURING
To provide a method for producing a hydraulic cured body excellent in workability, low in carbon dioxide gas discharge in production, having a carbon dioxide fixing property and good in strength, and a cement composition for carbonation curing.SOLUTION: A method for producing a hydraulic cured body includes curing and carbonating a cement composition that contains water, a mixed cement containing a blast furnace slag fine powder and cement, calcium hydroxide, and a setting retarding agent to produce the hydraulic cured body. The cement composition contains 10 pts.mass or more and 70 pts.mass or less of the calcium hydroxide relative to 100 pts.mass of the total amount of the blast furnace slag fine powder, the cement and the calcium hydroxide, 30 pts.mass or more and 1,400 pts.mass or less of the calcium hydroxide relative to 100 pts.mass of the blast furnace slag fine powder, 270 kg/m3 or more and 600 kg/m3 or less in total of the blast furnace slag fine powder, the cement and the calcium hydroxide, and 25 pts.mass or more and 65 pts.mass or less of the water relative to 100 pts.mass of the total amount of the blast furnace slag fine powder, the cement and the calcium hydroxide.SELECTED DRAWING: None
【課題】作業性に優れ、製造時の炭酸ガス排出量が少なく、炭酸ガス固定化機能を有し、強度が良好な水硬性硬化体の製造方法および炭酸化養生用セメント組成物を提供する。【解決手段】本発明の水硬性硬化体の製造方法は、水と、高炉スラグ微粉末とセメントとを含む混合セメントと、水酸化カルシウムと、凝結遅延剤と、を含有するセメント組成物を、硬化および炭酸化養生し、水硬性硬化体を製造する、水硬性硬化体の製造方法であって、前記セメント組成物は、前記水酸化カルシウムを、前記高炉スラグ微粉末と前記セメントと前記水酸化カルシウムの合計量の１００質量部に対して１０質量部以上７０質量部以下含有し、前記水酸化カルシウムを、前記高炉スラグ微粉末１００質量部に対して３０質量部以上１４００質量部以下含有し、前記高炉スラグ微粉末と前記セメントと前記水酸化カルシウムを合計で２７０ｋｇ／ｍ３以上６００ｋｇ／ｍ３以下含有し、前記水を、前記高炉スラグ微粉末と前記セメントと前記水酸化カルシウムの合計量の１００質量部に対して、２５質量部以上６５質量部以下含有する。【選択図】なし
METHOD FOR PRODUCING HYDRAULIC CURED BODY AND CEMENT COMPOSITION FOR CARBONATION CURING
水硬性硬化体の製造方法および炭酸化養生用セメント組成物
MUKAI TOSHINARI (author) / SEKI KENGO (author) / TORII TAKESHI (author) / WATANABE KENZO (author) / SAKAI GORO (author) / MORIYAMA YOSHINORI (author) / SAKATA NOBORU (author) / TAKAMURA TAKASHI (author)
2023-11-10
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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