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Multi-scale fiber composite reinforced coal gangue ceramsite concrete and preparation method thereof
The invention belongs to the technical field of concrete materials, and relates to multi-scale fiber composite reinforced coal gangue ceramsite concrete and a preparation method thereof. The concrete is prepared from the following raw materials: 200 to 300kg/m < 3 > of cement, 50 to 120kg/m < 3 > of fly ash, 600 to 750kg/m < 3 > of sand, 1000 to 1300kg/m < 3 > of coated coal gangue ceramsite, 3 to 9kg/m < 3 > of modified basalt fiber, 10 to 20kg/m < 3 > of modified calcium carbonate whisker, 0.1 to 1kg/m < 3 > of surface-treated carbon nanotube, 100 to 200kg/m < 3 > of water and 5 to 20kg/m < 3 > of efficient air-entraining and water-reducing agent The purpose of the invention is achieved by carrying out shell wrapping treatment on the coal gangue ceramsite, carrying out modification treatment on the basalt fiber and the calcium carbonate whisker and the like. According to the method, the coal gangue can be effectively utilized, pollution of the coal gangue to the environment is reduced, and meanwhile the supply shortage situation of natural gravel can be relieved; the multi-scale fibers formed by the nano-scale carbon nanotubes, the micron-scale calcium carbonate whiskers and the millimeter-scale basalt fibers can achieve the effects of reducing early-stage shrinkage of the coal gangue ceramsite concrete, resisting cracks and toughening, the strength and mechanical properties of the coal gangue ceramsite concrete are improved on different structural levels, and the coal gangue ceramsite concrete has good application and popularization prospects.
本发明属于混凝土材料技术领域，涉及一种多尺度纤维复合增强煤矸石陶粒混凝土及其制备方法，原料组成如下：水泥200‑300kg/m3、粉煤灰50‑120kg/m3、砂子600‑750kg/m3、裹壳煤矸石陶粒1000‑1300kg/m3、改性玄武岩纤维3‑9kg/m3、改性碳酸钙晶须10‑20kg/m3、表面处理后的碳纳米管0.1‑1kg/m3、水100‑200kg/m3、高效引气减水剂5‑20kg/m3；通过对煤矸石陶粒进行裹壳处理，玄武岩纤维、碳酸钙晶须进行改性处理等达到本发明的目的。本发明方法可有效利用煤矸石，减少煤矸石对环境的污染，同时可缓解天然砂石的供应紧缺现状；纳米级碳纳米管‑微米级碳酸钙晶须‑毫米级玄武岩纤维构成的多尺度纤维可起到减小煤矸石陶粒混凝土早期收缩和阻裂增韧的作用，并在不同结构层次上改善煤矸石陶粒混凝土的强度和力学性能，具有很好的应用与推广前景。
Multi-scale fiber composite reinforced coal gangue ceramsite concrete and preparation method thereof
The invention belongs to the technical field of concrete materials, and relates to multi-scale fiber composite reinforced coal gangue ceramsite concrete and a preparation method thereof. The concrete is prepared from the following raw materials: 200 to 300kg/m < 3 > of cement, 50 to 120kg/m < 3 > of fly ash, 600 to 750kg/m < 3 > of sand, 1000 to 1300kg/m < 3 > of coated coal gangue ceramsite, 3 to 9kg/m < 3 > of modified basalt fiber, 10 to 20kg/m < 3 > of modified calcium carbonate whisker, 0.1 to 1kg/m < 3 > of surface-treated carbon nanotube, 100 to 200kg/m < 3 > of water and 5 to 20kg/m < 3 > of efficient air-entraining and water-reducing agent The purpose of the invention is achieved by carrying out shell wrapping treatment on the coal gangue ceramsite, carrying out modification treatment on the basalt fiber and the calcium carbonate whisker and the like. According to the method, the coal gangue can be effectively utilized, pollution of the coal gangue to the environment is reduced, and meanwhile the supply shortage situation of natural gravel can be relieved; the multi-scale fibers formed by the nano-scale carbon nanotubes, the micron-scale calcium carbonate whiskers and the millimeter-scale basalt fibers can achieve the effects of reducing early-stage shrinkage of the coal gangue ceramsite concrete, resisting cracks and toughening, the strength and mechanical properties of the coal gangue ceramsite concrete are improved on different structural levels, and the coal gangue ceramsite concrete has good application and popularization prospects.
本发明属于混凝土材料技术领域，涉及一种多尺度纤维复合增强煤矸石陶粒混凝土及其制备方法，原料组成如下：水泥200‑300kg/m3、粉煤灰50‑120kg/m3、砂子600‑750kg/m3、裹壳煤矸石陶粒1000‑1300kg/m3、改性玄武岩纤维3‑9kg/m3、改性碳酸钙晶须10‑20kg/m3、表面处理后的碳纳米管0.1‑1kg/m3、水100‑200kg/m3、高效引气减水剂5‑20kg/m3；通过对煤矸石陶粒进行裹壳处理，玄武岩纤维、碳酸钙晶须进行改性处理等达到本发明的目的。本发明方法可有效利用煤矸石，减少煤矸石对环境的污染，同时可缓解天然砂石的供应紧缺现状；纳米级碳纳米管‑微米级碳酸钙晶须‑毫米级玄武岩纤维构成的多尺度纤维可起到减小煤矸石陶粒混凝土早期收缩和阻裂增韧的作用，并在不同结构层次上改善煤矸石陶粒混凝土的强度和力学性能，具有很好的应用与推广前景。
Multi-scale fiber composite reinforced coal gangue ceramsite concrete and preparation method thereof
一种多尺度纤维复合增强煤矸石陶粒混凝土及其制备方法
XING MIN (author) / ZHANG HENGJI (author) / LIU LIYUAN (author) / JIA XUEMEI (author) / ZHAO XUAN (author) / CHEN SHUAI (author) / YAN JINGZHE (author) / MA PENGCHUAN (author) / WANG GUOYONG (author) / WANG HONGMEI (author)
2022-04-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2021