Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modified silica fume, preparation method thereof and ultra-high performance concrete
The invention belongs to the technical field of cement concrete, and particularly relates to modified silica fume, a preparation method thereof and ultra-high performance concrete. The preparation method of the modified silica fume provided by the invention comprises the following steps: mixing silica fume, a modifier and water to obtain slurry, carrying out solid-liquid separation, and sequentially washing, drying and grinding the solid to obtain the modified silica fume, the modifying agent is an amino silane modifying agent and comprises aminopropyl trimethoxy silane, aminopropyl triethoxy silane and glycidyl ether oxypropyl trimethoxy silane. Through optimization of the silica fume modifier, optimization of the silica fume dispersion process and optimization of the ultra-high performance concrete, the dispersion performance of the silica fume in the ultra-high performance concrete is improved, the stacking compactness of the ultra-high performance concrete is effectively improved, and the defects that traditional silica fume is difficult to disperse, complex in process, large in dispersion side effect and the like are overcome; the construction performance and the strength of the ultra-high performance concrete are improved.
本发明属于水泥混凝土技术领域，具体涉及一种改性硅灰及其制备方法、超高性能混凝土。本发明提供的改性硅灰的制备方法，将硅灰、改性剂和水混合得到的浆料进行固液分离，将固体依次进行洗涤、干燥和研磨，得到改性硅灰；改性剂为氨基硅烷改性剂，包括氨丙基三甲氧基硅烷、氨丙基三乙氧基硅烷和缩水甘油醚氧丙基三甲氧基硅烷。本发明通过硅灰改性剂优选、硅灰分散流程优化和超高性能混凝土优化，提升了硅灰在超高性能混凝土中的分散性能，有效改善了超高性能混凝土的堆积密实程度，解决了传统硅灰分散困难、流程复杂、分散副作用大等缺点，提升了超高性能混凝土施工性能和强度。
Modified silica fume, preparation method thereof and ultra-high performance concrete
The invention belongs to the technical field of cement concrete, and particularly relates to modified silica fume, a preparation method thereof and ultra-high performance concrete. The preparation method of the modified silica fume provided by the invention comprises the following steps: mixing silica fume, a modifier and water to obtain slurry, carrying out solid-liquid separation, and sequentially washing, drying and grinding the solid to obtain the modified silica fume, the modifying agent is an amino silane modifying agent and comprises aminopropyl trimethoxy silane, aminopropyl triethoxy silane and glycidyl ether oxypropyl trimethoxy silane. Through optimization of the silica fume modifier, optimization of the silica fume dispersion process and optimization of the ultra-high performance concrete, the dispersion performance of the silica fume in the ultra-high performance concrete is improved, the stacking compactness of the ultra-high performance concrete is effectively improved, and the defects that traditional silica fume is difficult to disperse, complex in process, large in dispersion side effect and the like are overcome; the construction performance and the strength of the ultra-high performance concrete are improved.
本发明属于水泥混凝土技术领域，具体涉及一种改性硅灰及其制备方法、超高性能混凝土。本发明提供的改性硅灰的制备方法，将硅灰、改性剂和水混合得到的浆料进行固液分离，将固体依次进行洗涤、干燥和研磨，得到改性硅灰；改性剂为氨基硅烷改性剂，包括氨丙基三甲氧基硅烷、氨丙基三乙氧基硅烷和缩水甘油醚氧丙基三甲氧基硅烷。本发明通过硅灰改性剂优选、硅灰分散流程优化和超高性能混凝土优化，提升了硅灰在超高性能混凝土中的分散性能，有效改善了超高性能混凝土的堆积密实程度，解决了传统硅灰分散困难、流程复杂、分散副作用大等缺点，提升了超高性能混凝土施工性能和强度。
Modified silica fume, preparation method thereof and ultra-high performance concrete
一种改性硅灰及其制备方法、超高性能混凝土
WEN DECHENG (Autor:in) / WEI DINGBANG (Autor:in) / GUO HAIZHEN (Autor:in) / REN GUOBIN (Autor:in) / TANG WEIBIN (Autor:in) / HU LIEN (Autor:in) / SHAO FEIFEI (Autor:in) / LI DENGKE (Autor:in)
09.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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