A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ADDITIVE FOR FAST-HARDENING CEMENT, MANUFACTURING METHOD THEREOF, AND FAST-HARDENING CEMENT COMPOSITION USING THE ADDITIVE
To provide a quick-hardening additive for cement to be added to the cement, capable of showing excellent quick-hardening performance with excellent hydration activity, and securing sufficiently prescribed flowability, even at a low temperature; and to provide a manufacturing method thereof.SOLUTION: An additive for fast-hardening cement is an additive containing C12A7-based mineral phase as a main mineral, and contains f-MgO and spinel (MgO-Al2O3). The mole ratio of f-MgO (MgO/(MgO+spinel)(mole ratio)) to the total mole ratio of f-MgO and spinel (MgO-Al2O3) is 0.30-0.95, and a fast-hardening cement composition is obtained by blending the additive for fast-hardening cement, Portland cement and gypsum.SELECTED DRAWING: Figure 2
【課題】 低温においても、水和活性が優れて良好な急硬性能を示すと同時に所定の流動性を十分に確保することができる、セメントに添加するセメント用急硬性添加材及びその製造方法を提供する。【解決手段】 速硬性セメント用添加材は、Ｃ１２Ａ７系鉱物相を主鉱物とする添加材であって、当該添加材中にｆ−ＭｇＯとスピネル（ＭｇＯ・Ａｌ２Ｏ３）を含有し、ｆ−ＭｇＯとスピネル（ＭｇＯ・Ａｌ２Ｏ３）の合計モル数に対するｆ−ＭｇＯのモル比（ＭｇＯ／（ＭｇＯ＋スピネル）（モル比））が０．３０〜０．９５であり、前記速硬性セメント用添加材、ポルトランドセメント及び石膏を配合することで、速硬性セメント組成物を得る。【選択図】図２
ADDITIVE FOR FAST-HARDENING CEMENT, MANUFACTURING METHOD THEREOF, AND FAST-HARDENING CEMENT COMPOSITION USING THE ADDITIVE
To provide a quick-hardening additive for cement to be added to the cement, capable of showing excellent quick-hardening performance with excellent hydration activity, and securing sufficiently prescribed flowability, even at a low temperature; and to provide a manufacturing method thereof.SOLUTION: An additive for fast-hardening cement is an additive containing C12A7-based mineral phase as a main mineral, and contains f-MgO and spinel (MgO-Al2O3). The mole ratio of f-MgO (MgO/(MgO+spinel)(mole ratio)) to the total mole ratio of f-MgO and spinel (MgO-Al2O3) is 0.30-0.95, and a fast-hardening cement composition is obtained by blending the additive for fast-hardening cement, Portland cement and gypsum.SELECTED DRAWING: Figure 2
【課題】 低温においても、水和活性が優れて良好な急硬性能を示すと同時に所定の流動性を十分に確保することができる、セメントに添加するセメント用急硬性添加材及びその製造方法を提供する。【解決手段】 速硬性セメント用添加材は、Ｃ１２Ａ７系鉱物相を主鉱物とする添加材であって、当該添加材中にｆ−ＭｇＯとスピネル（ＭｇＯ・Ａｌ２Ｏ３）を含有し、ｆ−ＭｇＯとスピネル（ＭｇＯ・Ａｌ２Ｏ３）の合計モル数に対するｆ−ＭｇＯのモル比（ＭｇＯ／（ＭｇＯ＋スピネル）（モル比））が０．３０〜０．９５であり、前記速硬性セメント用添加材、ポルトランドセメント及び石膏を配合することで、速硬性セメント組成物を得る。【選択図】図２
ADDITIVE FOR FAST-HARDENING CEMENT, MANUFACTURING METHOD THEREOF, AND FAST-HARDENING CEMENT COMPOSITION USING THE ADDITIVE
速硬性セメント用添加材、その製造方法及び当該添加材を用いた速硬性セメント組成物
KANO KAZUHIRO (author) / KAMIKOUCHI TAKASHI (author)
2021-09-27
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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QUICK HARDENING ADDITIVE MATERIAL FOR CEMENT AND MANUFACTURING METHOD THEREFOR
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QUICK HARDENING ADDITIVE MATERIAL FOR CEMENT AND MANUFACTURING METHOD THEREFOR
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QUICK HARDENING ADDITIVE MATERIAL FOR CEMENT AND MANUFACTURING METHOD THEREFOR
| European Patent Office | 2016