Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nanometer/micrometer filler composite toughened ultra-high-performance concrete and preparation method thereof
The invention provides nanometer/micrometer filler composite toughened ultra-high-performance concrete and a preparation method thereof. The ultra-high-performance concrete comprises cement, fly ash,silica fume, quartz sand, stainless steel microwires, a nanometer filler, water and a water reducing agent in a weight ratio of 1: (0.2-0.4): (0.2-0.4): (1.2-1.6): (0.10-0.20): (0.015-4.0000): (0.35-0.45): (0.0015-0.003). According to the invention, the low-doping-amount stainless steel microwires and the low-doping-amount nanometer filler are compounded and doped, so the structural compactness ofthe ultra-high-performance concrete is enhanced from a nanometer/microcosmic scale, original micro-cracks are reduced, the generation and the development of the cracks can be effectively limited, thetoughness of the ultra-high performance concrete is substantially improved, the engineering application range of the concrete is expanded, the improvement of structure durability and the optimizationof structure design are easily achieved, production process is simple, a large amount of industrial waste, namely fly ash is used, and the concrete is of important significance to environmental protection.
本发明提供一种纳/微米填料复合增韧超高性能混凝土及其制备方法，所述超高性能混凝土按重量比包括水泥：粉煤灰：硅灰：石英砂：不锈钢微丝：纳米填料：水：减水剂＝1：0.2～0.4：0.2～0.4：1.2～1.6：0.10～0.20：0.0015～4.0000：0.35～0.45：0.0015～0.003。本发明通过复合掺入低掺量不锈钢微丝和纳米填料，从纳/微观尺度增强了超高性能混凝土的结构密实度，减少了原生微裂纹，并可有效限制裂纹的产生和发展，大幅度提高了超高性能混凝土的韧性，拓展了其工程应用范围，并有利于结构耐久性的提高和结构设计的优化，且生产工艺简单，大量使用工业废料粉煤灰，对保护环境具有重要意义。
Nanometer/micrometer filler composite toughened ultra-high-performance concrete and preparation method thereof
The invention provides nanometer/micrometer filler composite toughened ultra-high-performance concrete and a preparation method thereof. The ultra-high-performance concrete comprises cement, fly ash,silica fume, quartz sand, stainless steel microwires, a nanometer filler, water and a water reducing agent in a weight ratio of 1: (0.2-0.4): (0.2-0.4): (1.2-1.6): (0.10-0.20): (0.015-4.0000): (0.35-0.45): (0.0015-0.003). According to the invention, the low-doping-amount stainless steel microwires and the low-doping-amount nanometer filler are compounded and doped, so the structural compactness ofthe ultra-high-performance concrete is enhanced from a nanometer/microcosmic scale, original micro-cracks are reduced, the generation and the development of the cracks can be effectively limited, thetoughness of the ultra-high performance concrete is substantially improved, the engineering application range of the concrete is expanded, the improvement of structure durability and the optimizationof structure design are easily achieved, production process is simple, a large amount of industrial waste, namely fly ash is used, and the concrete is of important significance to environmental protection.
本发明提供一种纳/微米填料复合增韧超高性能混凝土及其制备方法，所述超高性能混凝土按重量比包括水泥：粉煤灰：硅灰：石英砂：不锈钢微丝：纳米填料：水：减水剂＝1：0.2～0.4：0.2～0.4：1.2～1.6：0.10～0.20：0.0015～4.0000：0.35～0.45：0.0015～0.003。本发明通过复合掺入低掺量不锈钢微丝和纳米填料，从纳/微观尺度增强了超高性能混凝土的结构密实度，减少了原生微裂纹，并可有效限制裂纹的产生和发展，大幅度提高了超高性能混凝土的韧性，拓展了其工程应用范围，并有利于结构耐久性的提高和结构设计的优化，且生产工艺简单，大量使用工业废料粉煤灰，对保护环境具有重要意义。
Nanometer/micrometer filler composite toughened ultra-high-performance concrete and preparation method thereof
一种纳/微米填料复合增韧超高性能混凝土及其制备方法
DONG SUFEN (Autor:in) / WANG XINYUE (Autor:in) / WANG DANNA (Autor:in) / HAN BAOGUO (Autor:in)
20.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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