Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Copper tailing geopolymer concrete as well as preparation method and application thereof
The invention provides copper tailing geopolymer concrete as well as a preparation method and application thereof, and belongs to the technical field of building materials. The calcined copper tailings, the fly ash and the slag are used as cementing materials, the reactivity of the copper tailings can be improved by calcining, and the content of aluminum in the cementing materials can be improved by adding the fly ash and the slag, so that the reactivity of the cementing materials is improved, the formation of a cementing phase is promoted, and the mechanical property of the concrete is enhanced; the preparation method comprises the following steps: depolymerizing low polymers [SiO4] < 4-> and [AlO4] < 4->, exciting the depolymerized low polymers [SiO4] < 4-> and [AlO4] < 4-> through sodium silicate and alkali metal hydroxide under an alkaline condition, connecting the low polymers into a three-dimensional network structure in a staggered manner through an oxygen bridge, further improving the mechanical properties of the concrete in cooperation with coarse aggregate and fine aggregate, and adding a water reducer and a retarder to make the concrete have good fluidity.
本发明提供了一种铜尾矿地聚物混凝土及其制备方法和应用，属于建筑材料技术领域。本发明以煅烧铜尾矿、粉煤灰和矿渣作为胶凝材料，煅烧能够提高铜尾矿的反应活性，加入粉煤灰和矿渣能够提高胶凝材料中铝元素的含量，从而提高胶凝材料的反应活性，促进胶凝相的形成，增强混凝土的力学性能，使解聚后的低聚合体[SiO4]4‑和[AlO4]4‑通过硅酸钠和碱金属氢氧化物在碱性条件下激发，通过氧桥交错连接为三维立体网络结构，再配合粗骨料和细骨料，进一步提高混凝土的力学性能，加入减水剂和缓凝剂使得混凝土具有较好的流动性。
Copper tailing geopolymer concrete as well as preparation method and application thereof
The invention provides copper tailing geopolymer concrete as well as a preparation method and application thereof, and belongs to the technical field of building materials. The calcined copper tailings, the fly ash and the slag are used as cementing materials, the reactivity of the copper tailings can be improved by calcining, and the content of aluminum in the cementing materials can be improved by adding the fly ash and the slag, so that the reactivity of the cementing materials is improved, the formation of a cementing phase is promoted, and the mechanical property of the concrete is enhanced; the preparation method comprises the following steps: depolymerizing low polymers [SiO4] < 4-> and [AlO4] < 4->, exciting the depolymerized low polymers [SiO4] < 4-> and [AlO4] < 4-> through sodium silicate and alkali metal hydroxide under an alkaline condition, connecting the low polymers into a three-dimensional network structure in a staggered manner through an oxygen bridge, further improving the mechanical properties of the concrete in cooperation with coarse aggregate and fine aggregate, and adding a water reducer and a retarder to make the concrete have good fluidity.
本发明提供了一种铜尾矿地聚物混凝土及其制备方法和应用，属于建筑材料技术领域。本发明以煅烧铜尾矿、粉煤灰和矿渣作为胶凝材料，煅烧能够提高铜尾矿的反应活性，加入粉煤灰和矿渣能够提高胶凝材料中铝元素的含量，从而提高胶凝材料的反应活性，促进胶凝相的形成，增强混凝土的力学性能，使解聚后的低聚合体[SiO4]4‑和[AlO4]4‑通过硅酸钠和碱金属氢氧化物在碱性条件下激发，通过氧桥交错连接为三维立体网络结构，再配合粗骨料和细骨料，进一步提高混凝土的力学性能，加入减水剂和缓凝剂使得混凝土具有较好的流动性。
Copper tailing geopolymer concrete as well as preparation method and application thereof
一种铜尾矿地聚物混凝土及其制备方法和应用
REN HONGWEI (Autor:in) / DENG XIN (Autor:in) / CHEN JIANWEI (Autor:in) / ZHANG RUI (Autor:in)
13.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2023
Copper tailing powder modified geopolymer preparation device and preparation method thereof
| Europäisches Patentamt | 2024
Tungsten tailing powder geopolymer mortar and preparation method thereof
| Europäisches Patentamt | 2020
Copper tailing modifier as well as preparation method and application thereof
| Europäisches Patentamt | 2021
Preparation method of tungsten tailing-based geopolymer
| Europäisches Patentamt | 2022