A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Steel fiber structure for ultrahigh-strength concrete and concrete structure
The invention relates to a steel fiber structure for ultrahigh-strength concrete. The steel fiber structure comprises a steel fiber body, a plurality of flat head units are distributed on the steel fiber body, the spreading length AA of the flat head units is larger than the diameter D of the steel fiber body, and the breaking strength of the ultrahigh-strength concrete is improved through the meshing force of the flat head units in the ultrahigh-strength concrete. Compared with the prior art, the parts, exceeding the steel fiber body in the radial direction, of the flat head units and cementin ultra-high-strength concrete (UHPC) generate high meshing force, disengagement and separation of the steel fiber structure in cement are avoided, the tensile strength of the steel fiber structure can be completely exerted and is increased to 1200-2000MPa from 400MPa which can be loaded by existing steel fibers, so that the performance of the steel fiber structure can reach a full-load state, the breaking strength of the ultrahigh-strength concrete is remarkably improved, and the consumption of the steel fibers is reduced.
本发明涉及用于超高强度混凝土的钢纤维结构，包括钢纤维主体，所述的钢纤维主体上分布有多处扁头单元，所述的扁头单元的铺开长度AA大于钢纤维主体的直径D，通过扁头单元在超高强度混凝土中的咬合力提升超高强度混凝土的断裂强度。与现有技术相比，本发明中扁头单元在钢纤维主体径向上超出的部分与超高强度混凝土(UHPC)中的水泥产生较强的咬合力，避免了在钢纤维结构在水泥中脱开分离，使得钢纤维结构能够发挥出其完全的抗拉强度，由现有钢纤维可负载的400MPa增加至1200‑2000MPa，使得钢纤维结构的性能可达到满载状态，显著地提升了超高强度混凝土的断裂强度，节省了钢纤维的用量。
Steel fiber structure for ultrahigh-strength concrete and concrete structure
The invention relates to a steel fiber structure for ultrahigh-strength concrete. The steel fiber structure comprises a steel fiber body, a plurality of flat head units are distributed on the steel fiber body, the spreading length AA of the flat head units is larger than the diameter D of the steel fiber body, and the breaking strength of the ultrahigh-strength concrete is improved through the meshing force of the flat head units in the ultrahigh-strength concrete. Compared with the prior art, the parts, exceeding the steel fiber body in the radial direction, of the flat head units and cementin ultra-high-strength concrete (UHPC) generate high meshing force, disengagement and separation of the steel fiber structure in cement are avoided, the tensile strength of the steel fiber structure can be completely exerted and is increased to 1200-2000MPa from 400MPa which can be loaded by existing steel fibers, so that the performance of the steel fiber structure can reach a full-load state, the breaking strength of the ultrahigh-strength concrete is remarkably improved, and the consumption of the steel fibers is reduced.
本发明涉及用于超高强度混凝土的钢纤维结构，包括钢纤维主体，所述的钢纤维主体上分布有多处扁头单元，所述的扁头单元的铺开长度AA大于钢纤维主体的直径D，通过扁头单元在超高强度混凝土中的咬合力提升超高强度混凝土的断裂强度。与现有技术相比，本发明中扁头单元在钢纤维主体径向上超出的部分与超高强度混凝土(UHPC)中的水泥产生较强的咬合力，避免了在钢纤维结构在水泥中脱开分离，使得钢纤维结构能够发挥出其完全的抗拉强度，由现有钢纤维可负载的400MPa增加至1200‑2000MPa，使得钢纤维结构的性能可达到满载状态，显著地提升了超高强度混凝土的断裂强度，节省了钢纤维的用量。
Steel fiber structure for ultrahigh-strength concrete and concrete structure
一种用于超高强度混凝土的钢纤维结构及混凝土结构
YAN PENGFEI (author) / YAN BIAO (author)
2020-09-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Novel ultrahigh-strength steel fiber reinforced concrete composite structure protective door
| European Patent Office | 2023
Preparation method of ultrahigh-strength steel fiber reinforced concrete
| European Patent Office | 2021