CEMENT CLINKER COMPOSITION AND PORTLAND CEMENT COMPOSITION: Fid-Bau Portal

CEMENT CLINKER COMPOSITION AND PORTLAND CEMENT COMPOSITION

YAMADA AKIRA / MIYAWAKI KENJI

PROBLEM TO BE SOLVED: To provide a cement clinker composition that improves the strength development of concrete and mortar, and to provide a portland cement composition containing the cement clinker composition.SOLUTION: There is provided a cement clinker composition in which the proportion of 3CaO-SiOcalculated by the Bogue equation is 50 to 75 mass%, the proportion of 2CaO-SiOis 5 to 25 mass%, the proportion of the sum of 3CaO-AlOand 4CaO-AlO-FeOis 10 to 25 mass%, and MgO, SO, and F are contained and the content of MgO is 0.5 to 3.0 mass%, the content of SOis 0.3 to 1.5 mass%, the content of F is 100 to 800 mass ppm, and the content of MgO, SO, and F satisfies the relationship of the following formula (1). A portland cement composition comprising the cement clinker composition and gypsum. 1000≤(content of MgO(mass%))×(content of F (mass ppm)F)÷(content of SO(mass%))≤1800 (1).SELECTED DRAWING: None

【課題】コンクリートやモルタルの強度発現性を向上させるセメントクリンカ組成物およびそのセメントクリンカ組成物を含むポルトランドセメント組成物の提供。【解決手段】ボーグ式で算出された３ＣａＯ・ＳｉＯ２の割合が５０〜７５質量％、２ＣａＯ・ＳｉＯ２の割合が５〜２５質量％、３ＣａＯ・Ａｌ２Ｏ３及び４ＣａＯ・Ａｌ２Ｏ３・ＦｅＯ３の合計の割合が１０〜２５質量％、、ＭｇＯ、ＳＯ３及びＦを含み、ＭｇＯの含有量が０．５〜３．０質量％、ＳＯ３の含有量が０．３〜１．５質量％、Ｆの含有量が１００〜８００質量ｐｐｍ、ＭｇＯ、ＳＯ３およびＦの含有量が下記の式（１）の関係を満たすセメントクリンカ組成物。このセメントクリンカ組成物、石膏とを含むポルトランドセメント組成物。１０００≦（ＭｇＯの含有量（質量％））×（Ｆの含有量（質量ｐｐｍ））÷（ＳＯ３の含有量（質量％））≦１８００（１）【選択図】なし

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