Method for controlling distribution direction of steel fibers in steel fiber reinforced concrete through magnetic field
A technology of steel fiber concrete and steel fiber, which is applied in the field of controlling the distribution direction of steel fiber in steel fiber concrete through a magnetic field, and can solve problems such as cracks that cannot fully exert the tensile performance of steel fiber, and disorderly addition of steel fiber
Inactive Publication Date: 2019-05-03
NANJING UNIV OF SCI & TECH
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[0005] However, in many literatures, the addition of steel fibers is chaotic, and the strong tensile properties of steel fibers and the ability to bridge cracks caused by tension cannot be fully utilized.
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[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0023] The implementation of the present invention will be described in detail below in conjunction with specific embodiments.
[0024] In the drawings of this embodiment, the same or similar symbols correspond to the same or similar components; The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orien...
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Abstract
The invention discloses a method for controlling distribution direction of steel fibers in steel fiber reinforced concrete through magnetic field. The method includes: firstly preparing a concrete material and determining the blend ratio of the concrete material; adding magnetized steel fibers to prepare a steel fiber reinforced concrete test model; placing the steel fiber reinforced concrete testmodel in a controllable magnetic field, and controlling the distribution direction of steel fibers by controlling the direction of the magnetic field. In the method, by generating the magnetic field,the completely magnetized steel fibers in the steel fiber reinforced concrete are controlled by means of the magnetic field, thereby controlling the distribution direction of steel fibers. The methodis simple and flexible and is easy to carry out, and has important practical significance for controllable preparation and shaping of the steel fiber reinforced concrete.
Description
technical field [0001] The invention belongs to the preparation technology of steel fiber concrete, in particular to a method for controlling the distribution direction of steel fibers in steel fiber concrete through a magnetic field. Background technique [0002] As we all know, concrete is a building material whose tensile strength is much lower than the compressive strength. Its low tensile strength makes it easy to produce more cracks in the tension zone and to be damaged first when it is working. Adding steel fiber can better change this phenomenon, we call this kind of concrete mixed with steel fiber as steel fiber concrete. [0003] These randomly distributed steel fibers in concrete can effectively prevent the expansion of micro-cracks and the formation of macro-cracks in concrete, significantly improve the tensile, bending, impact and fatigue properties of concrete, and have good ductility . [0004] According to various theories of fiber reinforcement mechanism, ...
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IPC IPC(8): C04B40/00C04B28/04
Inventor 孙巍巍陈乐冯君王磊
Owner NANJING UNIV OF SCI & TECH