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 HIROKADO TAKAO, KAMIKOUCHI TAKASHI, IMAZU DAIKI, KANAI KENSUKE, SASAKI SHOHEI, KANO KAZUHIRO
Format Patent
LanguageEnglish
Japanese
Published 05.07.2023
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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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
Bibliography:Application Number: JP20210209351