A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
UHPC (Ultra High Performance Concrete) rapid fluidization admixture and preparation method thereof
The invention relates to a UHPC (Ultra High Performance Concrete) rapid fluidization admixture, and belongs to the technical field of building materials. The UHPC rapid fluidization admixture prepared by the invention comprises silica fume, fly ash microspheres, tourmaline powder, spherical aluminum oxide and spherical nano ferric oxide. After the silica fume is subjected to surface hydrophobic treatment, the structure of the surface of the silica fume is changed, the surface of the silica fume is prevented from being in excessive contact with water, the fluidity and dispersity are improved, and the silica fume can better interact with other components in concrete and be uniformly mixed with the other components; added spherical ferric oxide effectively absorbs moisture in the storage process, and internal moisture prevention is achieved; due to mutual repulsive interaction of charges of the fly ash microspheres and the tourmaline powder, particle friction is reduced, and dispersion of powder particles is improved; spherical aluminum oxide with different particle sizes is used as supporting sites for particle friction, so that rapid closest packing and fluidization are realized; through the synergistic effect of all the materials, rapid fluidization of UHPC after water is added and stirring is achieved, and the stirring time is shortened.
本发明涉及一种UHPC快速流化掺合料，属于建筑材料技术领域。本发明制备的UHPC快速流化掺合料包括硅灰、粉煤灰微珠、电气石粉、球形三氧化二铝和球形纳米三氧化二铁。硅灰经过表面疏水处理后，其表面的结构发生改变，避免硅灰表面过多接触水分，提高了流动性和分散性，使其能够更好地与混凝土中的其他成分相互作用和混合均匀；加入的球形三氧化二铁有效吸收存储过程中的水分，实现内部防潮；粉煤灰微珠与电气石粉存在的电荷相互排斥作用，减少颗粒摩擦，提高粉体颗粒的分散；不同粒径的球状三氧化二铝作为颗粒摩擦的支撑位点，实现快速最紧密堆积和流化；各材料间的协同作用，实现了UHPC在加水搅拌后快速流化，缩短搅拌时间。
UHPC (Ultra High Performance Concrete) rapid fluidization admixture and preparation method thereof
The invention relates to a UHPC (Ultra High Performance Concrete) rapid fluidization admixture, and belongs to the technical field of building materials. The UHPC rapid fluidization admixture prepared by the invention comprises silica fume, fly ash microspheres, tourmaline powder, spherical aluminum oxide and spherical nano ferric oxide. After the silica fume is subjected to surface hydrophobic treatment, the structure of the surface of the silica fume is changed, the surface of the silica fume is prevented from being in excessive contact with water, the fluidity and dispersity are improved, and the silica fume can better interact with other components in concrete and be uniformly mixed with the other components; added spherical ferric oxide effectively absorbs moisture in the storage process, and internal moisture prevention is achieved; due to mutual repulsive interaction of charges of the fly ash microspheres and the tourmaline powder, particle friction is reduced, and dispersion of powder particles is improved; spherical aluminum oxide with different particle sizes is used as supporting sites for particle friction, so that rapid closest packing and fluidization are realized; through the synergistic effect of all the materials, rapid fluidization of UHPC after water is added and stirring is achieved, and the stirring time is shortened.
本发明涉及一种UHPC快速流化掺合料，属于建筑材料技术领域。本发明制备的UHPC快速流化掺合料包括硅灰、粉煤灰微珠、电气石粉、球形三氧化二铝和球形纳米三氧化二铁。硅灰经过表面疏水处理后，其表面的结构发生改变，避免硅灰表面过多接触水分，提高了流动性和分散性，使其能够更好地与混凝土中的其他成分相互作用和混合均匀；加入的球形三氧化二铁有效吸收存储过程中的水分，实现内部防潮；粉煤灰微珠与电气石粉存在的电荷相互排斥作用，减少颗粒摩擦，提高粉体颗粒的分散；不同粒径的球状三氧化二铝作为颗粒摩擦的支撑位点，实现快速最紧密堆积和流化；各材料间的协同作用，实现了UHPC在加水搅拌后快速流化，缩短搅拌时间。
UHPC (Ultra High Performance Concrete) rapid fluidization admixture and preparation method thereof
一种UHPC快速流化掺合料及其制备方法
HUANG WENCONG (author) / XI HAIPING (author) / ZOU XIAOPING (author) / JIANG JIANSONG (author) / LIU WENWEN (author) / YI PENG (author) / HE ZIYANG (author) / GAO PENGHUI (author) / FAN KAI (author)
2024-03-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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