Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-flow-state low-shrinkage high-toughness fiber concrete and preparation method thereof
The invention provides fiber concrete with high flow state, low shrinkage and high toughness. The concrete comprises cement, a viscosity-reducing, reinforcing and toughening mineral admixture, mullite sand, basalt coarse aggregate, multi-scale hybrid fibers, an ultra-dispersion viscosity-reducing special admixture and water. The working performance of a concrete mixture is optimized and the compactness and homogeneity of the concrete are improved by utilizing the ball effect of fly ash microspheres in the viscosity-reducing, reinforcing and toughening mineral admixture and the viscosity-reducing effect of the ultra-dispersion viscosity-reducing special admixture, so that the self-compaction and high-flow-state design of the high-strength concrete is realized; the toughness of the fiber concrete is synergistically improved in multiple scales; the toughening design of the fiber concrete on the molecular scale can be realized by utilizing the small-scale effect of the gas-phase nano SiO2 particles; the high-flow-state, high-elastic-modulus, high-toughness and low-shrinkage fiber concrete has high strength, self-compaction and high durability, the problem that a large-span concrete box arch bridge is prone to mid-span downwarping is solved, and the high-flow-state, high-elastic-modulus, high-toughness and low-shrinkage fiber concrete has important practical application value.
本发明提供了一种高流态低收缩高韧性纤维混凝土。本发明的混凝土包括水泥、降粘增强增韧矿物掺合料、莫来石砂、玄武岩粗集料、多尺度混杂纤维、超分散降粘专用外加剂和水；其利用降粘增强增韧矿物掺合料中粉煤灰微珠的“滚珠效应”的和超分散降粘专用外加剂的降粘作用，优化混凝土拌合物的工作性能，改善混凝土的密实性和均质性，实现高强混凝土的自密实、高流态设计；多尺度协同提升纤维混凝土的韧性：利用气相纳米SiO2颗粒的小尺度效应可实现纤维混凝土在分子尺度上的增韧设计；本发明所述高流态高弹模高韧性低收缩纤维混凝土兼具高强、自密实及高耐久性能，解决了大跨度混凝土箱拱桥易跨中下挠的问题，具有重要的实际应用价值。
High-flow-state low-shrinkage high-toughness fiber concrete and preparation method thereof
The invention provides fiber concrete with high flow state, low shrinkage and high toughness. The concrete comprises cement, a viscosity-reducing, reinforcing and toughening mineral admixture, mullite sand, basalt coarse aggregate, multi-scale hybrid fibers, an ultra-dispersion viscosity-reducing special admixture and water. The working performance of a concrete mixture is optimized and the compactness and homogeneity of the concrete are improved by utilizing the ball effect of fly ash microspheres in the viscosity-reducing, reinforcing and toughening mineral admixture and the viscosity-reducing effect of the ultra-dispersion viscosity-reducing special admixture, so that the self-compaction and high-flow-state design of the high-strength concrete is realized; the toughness of the fiber concrete is synergistically improved in multiple scales; the toughening design of the fiber concrete on the molecular scale can be realized by utilizing the small-scale effect of the gas-phase nano SiO2 particles; the high-flow-state, high-elastic-modulus, high-toughness and low-shrinkage fiber concrete has high strength, self-compaction and high durability, the problem that a large-span concrete box arch bridge is prone to mid-span downwarping is solved, and the high-flow-state, high-elastic-modulus, high-toughness and low-shrinkage fiber concrete has important practical application value.
本发明提供了一种高流态低收缩高韧性纤维混凝土。本发明的混凝土包括水泥、降粘增强增韧矿物掺合料、莫来石砂、玄武岩粗集料、多尺度混杂纤维、超分散降粘专用外加剂和水；其利用降粘增强增韧矿物掺合料中粉煤灰微珠的“滚珠效应”的和超分散降粘专用外加剂的降粘作用，优化混凝土拌合物的工作性能，改善混凝土的密实性和均质性，实现高强混凝土的自密实、高流态设计；多尺度协同提升纤维混凝土的韧性：利用气相纳米SiO2颗粒的小尺度效应可实现纤维混凝土在分子尺度上的增韧设计；本发明所述高流态高弹模高韧性低收缩纤维混凝土兼具高强、自密实及高耐久性能，解决了大跨度混凝土箱拱桥易跨中下挠的问题，具有重要的实际应用价值。
High-flow-state low-shrinkage high-toughness fiber concrete and preparation method thereof
一种高流态低收缩高韧性纤维混凝土及其制备方法
GUO YUE (Autor:in) / GUO DENG (Autor:in) / DING QINGJUN (Autor:in) / ZHOU PENG (Autor:in) / ZHOU SITING (Autor:in) / CHEN DONGDONG (Autor:in) / YU ZEWEN (Autor:in) / JIN FAN (Autor:in) / LI ZHUO (Autor:in) / LI JINHUI (Autor:in)
10.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
High-toughness low-shrinkage ultra-high performance concrete and preparation method thereof
| Europäisches Patentamt | 2021
Shrinkage-resistant ultrahigh-toughness concrete and preparation method thereof
| Europäisches Patentamt | 2022
Low-shrinkage high-toughness concrete and production process thereof
| Europäisches Patentamt | 2023
High-toughness synthetic fiber concrete and preparation method thereof
| Europäisches Patentamt | 2023
High-flow-state low-shrinkage environment-friendly premixed concrete and preparation method thereof
| Europäisches Patentamt | 2022