CEMENT COMPOSITION AND METHOD FOR PRODUCING THE SAME
To provide: a cement composition which has excellent long-term mortar strength even when a content of MgO in Portland cement is high; and a method for producing a cement composition, capable of improving the long-term mortar strength even when the content of MgO in Portland cement is high.SOLUTION:...
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Main Authors | , , , , , |
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Format | Patent |
Language | English Japanese |
Published |
05.07.2023
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Subjects | |
Online Access | Get full text |
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Summary: | To provide: a cement composition which has excellent long-term mortar strength even when a content of MgO in Portland cement is high; and a method for producing a cement composition, capable of improving the long-term mortar strength even when the content of MgO in Portland cement is high.SOLUTION: A cement composition comprises: Portland cement which satisfies (1) and (2); and 0.001-0.025 pt.mass of an alkanolamine based on 100 pts.mass of the Portland cement. (1) 0.55≤MgO/Fe2O3+CL'SO3/SO3≤0.95 (2)0≤▵C4AF.SELECTED DRAWING: None
【課題】ポルトランドセメント中のMgO含有量が高くても、モルタル長期強度に優れるセメント組成物及びポルトランドセメント中のMgO含有量が高くても、モルタル長期強度を向上することができるセメント組成物の製造方法を提供する。【解決手段】下記(1)及び(2)を満たすポルトランドセメントと、前記ポルトランドセメント100質量部に対し、0.001~0.025質量部のアルカノールアミンと、を含むセメント組成物。(1)0.55≦MgO/Fe2O3+CL'SO3/SO3≦0.95(2)0≦△C4AF【選択図】なし |
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Bibliography: | Application Number: JP20210209351 |