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High-performance alkali-activated slag-based seawater coral aggregate concrete and preparation method thereof
The invention provides high-performance alkali-activated slag-based seawater coral aggregate concrete and a preparation method thereof. The concrete is formed by mixing industrial waste residues, an alkali activator, fibers, coral reef sand, coral reef stones and seawater, wherein the industrial waste residues are formed by a mixture of slag, fly ash and silica fume. According to the invention, the coal ash and the silica fume in a certain ratio are doped to overcome the defects that an alkali-activated full-slag cementing material is short in setting time and large in shrinkage, and the strength characteristic of concrete cannot be affected; the fibers are doped to effectively improve the toughness and crack resistance of the coral aggregate concrete; and meanwhile, shrinkage of the alkali-activated slag cementing material can be relieved to a certain extent through the restraining effect of the fibers. The concrete is suitable for a marine environment, and the purposes of environmental protection, high strength and high durability are achieved.
本发明提出了一种高性能碱激发矿渣基海水珊瑚骨料混凝土及制备方法，该混凝土由工业废渣、碱激发剂、纤维、珊瑚礁砂、珊瑚礁石和海水混合而成，矿渣、粉煤灰和硅灰混合物形成工业废渣。本发明通过掺入一定比例的粉煤灰和硅灰来缓减碱激发全矿渣胶凝材料凝结时间快、收缩大的弊端，而且不会影响到混凝土的强度特性。纤维的掺入是为了有效增加珊瑚骨料混凝土的韧性和抗裂性能。同时，纤维的约束作用还可一定程度上缓解碱激发矿渣胶凝材料的收缩。本发明使得这种混凝土适用于海洋环境，实现绿色环保、高强度、高耐久的目的。
High-performance alkali-activated slag-based seawater coral aggregate concrete and preparation method thereof
The invention provides high-performance alkali-activated slag-based seawater coral aggregate concrete and a preparation method thereof. The concrete is formed by mixing industrial waste residues, an alkali activator, fibers, coral reef sand, coral reef stones and seawater, wherein the industrial waste residues are formed by a mixture of slag, fly ash and silica fume. According to the invention, the coal ash and the silica fume in a certain ratio are doped to overcome the defects that an alkali-activated full-slag cementing material is short in setting time and large in shrinkage, and the strength characteristic of concrete cannot be affected; the fibers are doped to effectively improve the toughness and crack resistance of the coral aggregate concrete; and meanwhile, shrinkage of the alkali-activated slag cementing material can be relieved to a certain extent through the restraining effect of the fibers. The concrete is suitable for a marine environment, and the purposes of environmental protection, high strength and high durability are achieved.
本发明提出了一种高性能碱激发矿渣基海水珊瑚骨料混凝土及制备方法，该混凝土由工业废渣、碱激发剂、纤维、珊瑚礁砂、珊瑚礁石和海水混合而成，矿渣、粉煤灰和硅灰混合物形成工业废渣。本发明通过掺入一定比例的粉煤灰和硅灰来缓减碱激发全矿渣胶凝材料凝结时间快、收缩大的弊端，而且不会影响到混凝土的强度特性。纤维的掺入是为了有效增加珊瑚骨料混凝土的韧性和抗裂性能。同时，纤维的约束作用还可一定程度上缓解碱激发矿渣胶凝材料的收缩。本发明使得这种混凝土适用于海洋环境，实现绿色环保、高强度、高耐久的目的。
High-performance alkali-activated slag-based seawater coral aggregate concrete and preparation method thereof
高性能碱激发矿渣基海水珊瑚骨料混凝土及制备方法
ZHANG BAI (author) / ZHU HONG (author) / WANG QIANG (author) / LI FANGZHENG (author) / DONG ZHIQIANG (author)
2021-12-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2021
Design and properties of seawater coral aggregate alkali-activated concrete
| Taylor & Francis Verlag | 2022