Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Spheroidized low-heat Portland cement for nuclear power engineering and preparation method thereof
The invention provides spheroidized low-heat Portland cement for nuclear power engineering and a preparation method of the spheroidized low-heat Portland cement. The spheroidized low-heat Portland cement for nuclear power engineering has 8-22% of 45 [mu] m square hole sieve residue, 0.85-0.98 of uniformity coefficient, 0.76-0.85 of average circularity and 1.31-1.60 of average length-diameter ratio. In the nuclear power cement clinker, the content of tricalcium silicate (C3S) is less than or equal to 57%, the content of tricalcium aluminate (C3A) is less than or equal to 7%, and the content of free calcium oxide (f-CaO) is less than or equal to 1.0%; the standard consistency water consumption is less than or equal to 25%, and the 28d dry shrinkage rate is less than or equal to 0.07 The 3d hydration heat is less than or equal to 250kJ/kg, and the 7d hydration heat is less than or equal to 290kJ/kg. The invention also provides a preparation method of the spheroidized low-heat Portland cement for nuclear power engineering. The invention optimizes the particle size distribution of the spheroidized low-heat Portland cement for nuclear power engineering, improves the particle morphology, reduces the porosity, enhances the compactness, improves the pore structure of set cement, reduces the hydration heat and enhances the early strength.
本发明提供一种核电工程用球形化低热硅酸盐水泥及其制备方法，所述核电工程用球形化低热硅酸盐水泥的45μm方孔筛筛余8‑22％，均匀性系数0.85‑0.98，平均圆形度0.76‑0.85，平均长径比1.31‑1.60；核电水泥熟料中硅酸三钙(C3S)含量≤57％，铝酸三钙(C3A)含量≤7％，游离氧化钙(f‑CaO)含量≤1.0％；标准稠度用水量≤25％，28d干缩率≤0.07％；3d水化热≤250kJ/kg，7d水化热≤290kJ/kg。还提供一种核电工程用球形化低热硅酸盐水泥制备方法。本发明优化核电工程用球形化低热硅酸盐水泥粒径分布和改善颗粒形貌，减小孔隙率，提升密实度，改善水泥石孔隙结构，降低水化热，提高早期强度。
Spheroidized low-heat Portland cement for nuclear power engineering and preparation method thereof
The invention provides spheroidized low-heat Portland cement for nuclear power engineering and a preparation method of the spheroidized low-heat Portland cement. The spheroidized low-heat Portland cement for nuclear power engineering has 8-22% of 45 [mu] m square hole sieve residue, 0.85-0.98 of uniformity coefficient, 0.76-0.85 of average circularity and 1.31-1.60 of average length-diameter ratio. In the nuclear power cement clinker, the content of tricalcium silicate (C3S) is less than or equal to 57%, the content of tricalcium aluminate (C3A) is less than or equal to 7%, and the content of free calcium oxide (f-CaO) is less than or equal to 1.0%; the standard consistency water consumption is less than or equal to 25%, and the 28d dry shrinkage rate is less than or equal to 0.07 The 3d hydration heat is less than or equal to 250kJ/kg, and the 7d hydration heat is less than or equal to 290kJ/kg. The invention also provides a preparation method of the spheroidized low-heat Portland cement for nuclear power engineering. The invention optimizes the particle size distribution of the spheroidized low-heat Portland cement for nuclear power engineering, improves the particle morphology, reduces the porosity, enhances the compactness, improves the pore structure of set cement, reduces the hydration heat and enhances the early strength.
本发明提供一种核电工程用球形化低热硅酸盐水泥及其制备方法，所述核电工程用球形化低热硅酸盐水泥的45μm方孔筛筛余8‑22％，均匀性系数0.85‑0.98，平均圆形度0.76‑0.85，平均长径比1.31‑1.60；核电水泥熟料中硅酸三钙(C3S)含量≤57％，铝酸三钙(C3A)含量≤7％，游离氧化钙(f‑CaO)含量≤1.0％；标准稠度用水量≤25％，28d干缩率≤0.07％；3d水化热≤250kJ/kg，7d水化热≤290kJ/kg。还提供一种核电工程用球形化低热硅酸盐水泥制备方法。本发明优化核电工程用球形化低热硅酸盐水泥粒径分布和改善颗粒形貌，减小孔隙率，提升密实度，改善水泥石孔隙结构，降低水化热，提高早期强度。
Spheroidized low-heat Portland cement for nuclear power engineering and preparation method thereof
一种核电工程用球形化低热硅酸盐水泥及其制备方法
SUN ZHISHENG (Autor:in) / ZHU WENSHANG (Autor:in) / MA ZHAOMU (Autor:in) / MA HAIJUN (Autor:in) / WANG XINGQIN (Autor:in) / WU HONG'AN (Autor:in) / LUO MINGYANG (Autor:in) / LIU ANQI (Autor:in) / WU YUXIANG (Autor:in)
01.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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