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A platform for research: civil engineering, architecture and urbanism
Surface-modified steel fiber, modification method and concrete based on steel fiber
The invention belongs to the technical field of building materials, and particularly relates to a surface modified steel fiber, a modification method and concrete based on the steel fiber. According to the method for modifying the surface of the steel fiber in the composite mode through the silane and the nano-silicon dioxide, the surface roughness of the steel fiber can be remarkably improved, and the bonding performance of a fiber-matrix interface is improved. When the modified steel fiber is used as a reinforcing material of concrete, the fracture resistance and the compressive strength of a modified concrete product at the 7d curing age are respectively improved by 48.2% and 16% compared with those of an unmodified product, and the fracture resistance and the compressive strength at the 28d curing age are respectively improved by 52.7% and 16% compared with those of the unmodified product.
本发明属于建筑材料技术领域，更具体地，涉及表面改性的钢纤维、改性方法及基于该钢纤维的混凝土。本发明提供的硅烷和纳米二氧化硅复合改性钢纤维表面方法可以显著增大钢纤维的表面粗糙度，提升纤维‑基体界面的粘结性能。将改性得到的钢纤维用作混凝土的增强材料，改性混凝土产品7d养护龄期时的抗折和抗压强度值相对未改性产品分别提升48.2％和16％，28d养护龄期时的抗折和抗压强度值相对未改性产品分别提升52.7％和16％。
Surface-modified steel fiber, modification method and concrete based on steel fiber
The invention belongs to the technical field of building materials, and particularly relates to a surface modified steel fiber, a modification method and concrete based on the steel fiber. According to the method for modifying the surface of the steel fiber in the composite mode through the silane and the nano-silicon dioxide, the surface roughness of the steel fiber can be remarkably improved, and the bonding performance of a fiber-matrix interface is improved. When the modified steel fiber is used as a reinforcing material of concrete, the fracture resistance and the compressive strength of a modified concrete product at the 7d curing age are respectively improved by 48.2% and 16% compared with those of an unmodified product, and the fracture resistance and the compressive strength at the 28d curing age are respectively improved by 52.7% and 16% compared with those of the unmodified product.
本发明属于建筑材料技术领域，更具体地，涉及表面改性的钢纤维、改性方法及基于该钢纤维的混凝土。本发明提供的硅烷和纳米二氧化硅复合改性钢纤维表面方法可以显著增大钢纤维的表面粗糙度，提升纤维‑基体界面的粘结性能。将改性得到的钢纤维用作混凝土的增强材料，改性混凝土产品7d养护龄期时的抗折和抗压强度值相对未改性产品分别提升48.2％和16％，28d养护龄期时的抗折和抗压强度值相对未改性产品分别提升52.7％和16％。
Surface-modified steel fiber, modification method and concrete based on steel fiber
表面改性的钢纤维、改性方法及基于该钢纤维的混凝土
YANG ZHENJUN (author) / TIAN JIEFU (author) / ZENG YI (author)
2024-04-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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