Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
CEMENT COMPOSITION AND CEMENT COMPOSITION PRODUCTION METHOD, AND DURABILITY-ENHANCING ADMIXTURE
To provide a cement composition suppressing expansion with DEF even when there is a large content of an admixture, and having sufficient compressive strength development in a high temperature environment.SOLUTION: Provided is a cement composition containing cement clinker, gypsum and an admixture. The admixture includes inorganic powder including an amorphous phase, and limestone. The inorganic powder has a chemical composition including CaO, SiO2 and Al2O3, and on the basis of the total amount of the inorganic powder, the amount of CaO is 6.0-40.0 mass%, the amount of SiO3 is 35.0-75.0 mass%, and the amount of Al2O3 is 14.0-25.0 mass%. The content of the admixture based on the total amount of the cement clinker, the gypsum and the admixture is 2.0-30.0 mass%, the content of the inorganic powder is 1.0-29.0 mass%, and the content of the limestone is 1.0-10.0 mass%.SELECTED DRAWING: None
【課題】混合材の含有量が多い場合であっても、ＤＥＦに伴う膨張を抑制し、且つ高温環境下における十分な圧縮強度発現性を有するセメント組成物を提供すること。【解決手段】本開示の一側面は、セメントクリンカーと、石膏と、混合材と、を含有し、上記混合材が、非晶質相を含む無機粉末、及び石灰石を含み、上記無機粉末は、ＣａＯ、ＳｉＯ２及びＡｌ２Ｏ３を含む化学組成を有し、上記無機粉末の全量を基準として、ＣａＯ量が６．０〜４０．０質量％、ＳｉＯ３量が３５．０〜７５．０質量％、及びＡｌ２Ｏ３量が１４．０〜２５．０質量％であり、上記セメントクリンカー、上記石膏及び上記混合材の合計量を基準とする上記混合材の含有量が２．０〜３０．０質量％であり、上記無機粉末の含有量が１．０〜２９．０質量％であり、且つ、上記石灰石の含有量が１．０〜１０．０質量％である、セメント組成物を提供する。【選択図】なし
CEMENT COMPOSITION AND CEMENT COMPOSITION PRODUCTION METHOD, AND DURABILITY-ENHANCING ADMIXTURE
To provide a cement composition suppressing expansion with DEF even when there is a large content of an admixture, and having sufficient compressive strength development in a high temperature environment.SOLUTION: Provided is a cement composition containing cement clinker, gypsum and an admixture. The admixture includes inorganic powder including an amorphous phase, and limestone. The inorganic powder has a chemical composition including CaO, SiO2 and Al2O3, and on the basis of the total amount of the inorganic powder, the amount of CaO is 6.0-40.0 mass%, the amount of SiO3 is 35.0-75.0 mass%, and the amount of Al2O3 is 14.0-25.0 mass%. The content of the admixture based on the total amount of the cement clinker, the gypsum and the admixture is 2.0-30.0 mass%, the content of the inorganic powder is 1.0-29.0 mass%, and the content of the limestone is 1.0-10.0 mass%.SELECTED DRAWING: None
【課題】混合材の含有量が多い場合であっても、ＤＥＦに伴う膨張を抑制し、且つ高温環境下における十分な圧縮強度発現性を有するセメント組成物を提供すること。【解決手段】本開示の一側面は、セメントクリンカーと、石膏と、混合材と、を含有し、上記混合材が、非晶質相を含む無機粉末、及び石灰石を含み、上記無機粉末は、ＣａＯ、ＳｉＯ２及びＡｌ２Ｏ３を含む化学組成を有し、上記無機粉末の全量を基準として、ＣａＯ量が６．０〜４０．０質量％、ＳｉＯ３量が３５．０〜７５．０質量％、及びＡｌ２Ｏ３量が１４．０〜２５．０質量％であり、上記セメントクリンカー、上記石膏及び上記混合材の合計量を基準とする上記混合材の含有量が２．０〜３０．０質量％であり、上記無機粉末の含有量が１．０〜２９．０質量％であり、且つ、上記石灰石の含有量が１．０〜１０．０質量％である、セメント組成物を提供する。【選択図】なし
CEMENT COMPOSITION AND CEMENT COMPOSITION PRODUCTION METHOD, AND DURABILITY-ENHANCING ADMIXTURE
セメント組成物及びその製造方法、並びに、耐久性向上混合材
GOTO TAKU (Autor:in) / ITO TAKAYASU (Autor:in) / NAGAI MASAAKI (Autor:in) / KONISHI KAZUO (Autor:in)
11.10.2021
Patent
Elektronische Ressource
Japanisch
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