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A platform for research: civil engineering, architecture and urbanism
High-toughness low-shrinkage ultra-high performance concrete and preparation method thereof
The invention discloses high-toughness low-shrinkage ultra-high performance concrete and a preparation method thereof. The steel fibers are screened and shaken, so that the steel fibers with the same size are uniformly distributed in the concrete, when the concrete is influenced by external force, the fibers are not easy to straighten and loosen or pull out from the concrete, and the toughness of the concrete is improved. The zeolite powder is used as an internal curing agent, the surface of the zeolite powder is porous and rough, the water absorption rate is high, the zeolite powder soaked in clear water can slowly release internal moisture along with the prolonging of time after the concrete is formed, the concrete is subjected to sufficient internal curing, and the self-constriction and drying shrinkage of the concrete are greatly reduced.
本发明公开一种高韧性低收缩超高性能混凝土及其制备方法。本发明通过对钢纤维进行筛选和摇筛，使得尺寸相同的钢纤维均匀的分布在混凝土中，当混凝土受外力影响时，纤维不易从混凝土中拉直松动或拔出，有利于提高混凝土的韧性。沸石粉作为内养护剂，其表面多孔、粗糙，吸水率高，经过清水浸泡后的沸石粉在混凝土成型后会随着时间的延长缓慢释放出内部水分，使混凝土得到充分的内养护，大幅降低混凝土的自收缩和干燥收缩。
High-toughness low-shrinkage ultra-high performance concrete and preparation method thereof
The invention discloses high-toughness low-shrinkage ultra-high performance concrete and a preparation method thereof. The steel fibers are screened and shaken, so that the steel fibers with the same size are uniformly distributed in the concrete, when the concrete is influenced by external force, the fibers are not easy to straighten and loosen or pull out from the concrete, and the toughness of the concrete is improved. The zeolite powder is used as an internal curing agent, the surface of the zeolite powder is porous and rough, the water absorption rate is high, the zeolite powder soaked in clear water can slowly release internal moisture along with the prolonging of time after the concrete is formed, the concrete is subjected to sufficient internal curing, and the self-constriction and drying shrinkage of the concrete are greatly reduced.
本发明公开一种高韧性低收缩超高性能混凝土及其制备方法。本发明通过对钢纤维进行筛选和摇筛，使得尺寸相同的钢纤维均匀的分布在混凝土中，当混凝土受外力影响时，纤维不易从混凝土中拉直松动或拔出，有利于提高混凝土的韧性。沸石粉作为内养护剂，其表面多孔、粗糙，吸水率高，经过清水浸泡后的沸石粉在混凝土成型后会随着时间的延长缓慢释放出内部水分，使混凝土得到充分的内养护，大幅降低混凝土的自收缩和干燥收缩。
High-toughness low-shrinkage ultra-high performance concrete and preparation method thereof
一种高韧性低收缩超高性能混凝土及其制备方法
LIU GANGLIANG (author) / WANG ZHONGWEN (author) / LIU ZHIFENG (author) / LIU HONGBO (author) / HUANG XIANG (author) / XIE AIZENG (author)
2021-11-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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