A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Low-carbon spheroidized cement and preparation method thereof
The invention provides low-carbon spheroidized cement and a preparation method thereof. The particle size and interval accumulative distribution of the low-carbon spheroidized cement are as follows: the proportion less than 3 microns is less than or equal to 14%, the proportion less than 32 microns is less than or equal to 75%, the proportion less than 45 microns is less than or equal to 88%, and the proportion less than 80 microns is less than or equal to 98%. The circularity is 0.75 to 0.90, and the length-diameter ratio is 1.25 to 1.60; and the residue on a 45-micron sieve is 7-30%. The particle size distribution of the low-carbon spheroidized cement is optimized, the circularity is improved, the length-diameter ratio is reduced, the distribution interval of the length-diameter ratio and the circularity of particles is small, the particle size distribution is more reasonable, the particle stacking density is improved, the distribution is closer to Fuller curve distribution, and the particle morphology is obviously improved, so that the standard consistency water consumption of the cement is reduced, and the mortar fluidity is improved; the low-carbon spheroidized cement is low in hydration heat, proper in early strength and high in later strength, the inherent quality of the cement is improved, the preparation method is low in energy consumption, the low-carbon spheroidized cement is used for concrete, the workability of the concrete can be improved, the impermeability and durability of the concrete can be improved, and the service life of the concrete can be prolonged.
本发明提供一种低碳球形化水泥及其制备方法，其中低碳球形化水泥粒径及区间累计分布为：＜3μm占比≤14％，＜32μm占比≤75％，＜45μm占比≤88％，＜80μm占比≤98％；圆形度0.75‑0.90，长径比1.25‑1.60；45μm筛余7％‑30％。本发明通过对低碳球形化水泥粒径分布进行优化，提高圆形度，降低长径比，且颗粒长径比和圆形度分布区间小，粒径分布更加合理，提高颗粒堆积密度，更接近Fuller曲线分布，明显改善颗粒形貌，使得水泥标准稠度用水量降低，胶砂流动度提高，水化热更低，早期强度适当，后期强度更高，提升水泥内在品质，并实现低能耗的制备方法，将该低碳球形化水泥用于混凝土，可改善混凝土工作性，提高混凝土抗渗性和耐久性，延长混凝土使用寿命。
Low-carbon spheroidized cement and preparation method thereof
The invention provides low-carbon spheroidized cement and a preparation method thereof. The particle size and interval accumulative distribution of the low-carbon spheroidized cement are as follows: the proportion less than 3 microns is less than or equal to 14%, the proportion less than 32 microns is less than or equal to 75%, the proportion less than 45 microns is less than or equal to 88%, and the proportion less than 80 microns is less than or equal to 98%. The circularity is 0.75 to 0.90, and the length-diameter ratio is 1.25 to 1.60; and the residue on a 45-micron sieve is 7-30%. The particle size distribution of the low-carbon spheroidized cement is optimized, the circularity is improved, the length-diameter ratio is reduced, the distribution interval of the length-diameter ratio and the circularity of particles is small, the particle size distribution is more reasonable, the particle stacking density is improved, the distribution is closer to Fuller curve distribution, and the particle morphology is obviously improved, so that the standard consistency water consumption of the cement is reduced, and the mortar fluidity is improved; the low-carbon spheroidized cement is low in hydration heat, proper in early strength and high in later strength, the inherent quality of the cement is improved, the preparation method is low in energy consumption, the low-carbon spheroidized cement is used for concrete, the workability of the concrete can be improved, the impermeability and durability of the concrete can be improved, and the service life of the concrete can be prolonged.
本发明提供一种低碳球形化水泥及其制备方法，其中低碳球形化水泥粒径及区间累计分布为：＜3μm占比≤14％，＜32μm占比≤75％，＜45μm占比≤88％，＜80μm占比≤98％；圆形度0.75‑0.90，长径比1.25‑1.60；45μm筛余7％‑30％。本发明通过对低碳球形化水泥粒径分布进行优化，提高圆形度，降低长径比，且颗粒长径比和圆形度分布区间小，粒径分布更加合理，提高颗粒堆积密度，更接近Fuller曲线分布，明显改善颗粒形貌，使得水泥标准稠度用水量降低，胶砂流动度提高，水化热更低，早期强度适当，后期强度更高，提升水泥内在品质，并实现低能耗的制备方法，将该低碳球形化水泥用于混凝土，可改善混凝土工作性，提高混凝土抗渗性和耐久性，延长混凝土使用寿命。
Low-carbon spheroidized cement and preparation method thereof
一种低碳球形化水泥及其制备方法
SUN ZHISHENG (author) / ZHU WENSHANG (author) / MA ZHAOMU (author) / MA HAIJUN (author) / WANG XINGQIN (author) / WU HONG'AN (author) / LUO MINGYANG (author) / LIU ANQI (author) / WU YUXIANG (author)
2024-08-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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