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A platform for research: civil engineering, architecture and urbanism
High-early-strength low-shrinkage composite Portland cement and preparation method thereof
The invention discloses high-early-strength low-shrinkage composite Portland cement and a preparation method thereof. The high-early-strength low-shrinkage composite Portland cement comprises low-shrinkage Portland cement clinker, an early-strength component and a gypsum component, the low-shrinkage Portland cement clinker is prepared from a calcium raw material, a silicon-aluminum raw material, an iron raw material, a first activating agent and a mineralizing agent; the mineral composition comprises 30 to 50 parts of C3S, 20 to 40 parts of C2S, 0.5 to 5 parts of C3A and 10 to 25 parts of C4AF. The particle size distribution characteristics are as follows: D10 is more than or equal to 5 microns, D90 is less than or equal to 45 microns, the uniformity index is 1.2-1.6, and the characteristic particle size is 25-30 microns; the early strength component is prepared from F-type fly ash or C-type fly ash, limestone, magnesium oxide and a second activator; the mineral composition comprises the following components in parts by weight: 50-65 parts of C20A13M3350 and 35-50 parts of C2S. The cement prepared by the invention not only has high early strength, but also has small drying shrinkage.
本发明公开了一种高早强低收缩复合硅酸盐水泥及制备方法，包括：低收缩硅酸盐水泥熟料、早强组分和石膏组分；低收缩硅酸盐水泥熟料由钙质原料、硅铝质原料、铁质原料、第一活化剂和矿化剂制备而成；其矿物组成包括：C3S 30～50份、C2S 20～40份、C3A0.5～5份、C4AF 10～25份；其粒度分布特征为D10≥5μm、D90≤45μm、均匀性指数为1.2～1.6，特征粒径为25～30μm；早强组分由F类粉煤灰或C类粉煤灰、石灰石、氧化镁和第二活化剂制备而成；其矿物组成包括：C20A13M3S350～65份、C2S 35～50份。本发明所制得的水泥不仅早期强度高，同时具有较小的干燥收缩率。
High-early-strength low-shrinkage composite Portland cement and preparation method thereof
The invention discloses high-early-strength low-shrinkage composite Portland cement and a preparation method thereof. The high-early-strength low-shrinkage composite Portland cement comprises low-shrinkage Portland cement clinker, an early-strength component and a gypsum component, the low-shrinkage Portland cement clinker is prepared from a calcium raw material, a silicon-aluminum raw material, an iron raw material, a first activating agent and a mineralizing agent; the mineral composition comprises 30 to 50 parts of C3S, 20 to 40 parts of C2S, 0.5 to 5 parts of C3A and 10 to 25 parts of C4AF. The particle size distribution characteristics are as follows: D10 is more than or equal to 5 microns, D90 is less than or equal to 45 microns, the uniformity index is 1.2-1.6, and the characteristic particle size is 25-30 microns; the early strength component is prepared from F-type fly ash or C-type fly ash, limestone, magnesium oxide and a second activator; the mineral composition comprises the following components in parts by weight: 50-65 parts of C20A13M3350 and 35-50 parts of C2S. The cement prepared by the invention not only has high early strength, but also has small drying shrinkage.
本发明公开了一种高早强低收缩复合硅酸盐水泥及制备方法，包括：低收缩硅酸盐水泥熟料、早强组分和石膏组分；低收缩硅酸盐水泥熟料由钙质原料、硅铝质原料、铁质原料、第一活化剂和矿化剂制备而成；其矿物组成包括：C3S 30～50份、C2S 20～40份、C3A0.5～5份、C4AF 10～25份；其粒度分布特征为D10≥5μm、D90≤45μm、均匀性指数为1.2～1.6，特征粒径为25～30μm；早强组分由F类粉煤灰或C类粉煤灰、石灰石、氧化镁和第二活化剂制备而成；其矿物组成包括：C20A13M3S350～65份、C2S 35～50份。本发明所制得的水泥不仅早期强度高，同时具有较小的干燥收缩率。
High-early-strength low-shrinkage composite Portland cement and preparation method thereof
一种高早强低收缩复合硅酸盐水泥及制备方法
XIE YONGJIANG (author) / LI SHUMING (author) / DENG QINGSHAN (author) / FENG ZHONGWEI (author) / ZHENG XINGUO (author) / LIU JING (author) / ZHANG CHI (author) / YU PEIYUN (author) / HU JIALIN (author) / LIU XIANGHUI (author)
2024-02-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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