Variable-cross-section multi-anchoring-section special steel fiber structure

Abstract

The invention discloses a variable-cross-section multi-anchoring-section special steel fiber structure. The variable-cross-section multi-anchoring-section special steel fiber structure comprises a steel fiber body, the middle section of the steel fiber body is a flat and straight first anchoring section, hook-shaped second anchoring sections are arranged on the two end sides of the first anchoring section, the cross sections of the second anchoring sections are round, main anchoring points are arranged on the second anchoring sections, third anchoring sections are arranged at the side ends, away from the first anchoring section, of the second anchoring sections, and the cross sections of the third anchoring sections are oval and flat. The middle section of the steel fiber body is the flat and straight first anchoring section, so that the tensile strength of a steel fiber body is guaranteed; the hook-shaped second anchoring sections are provided with the main anchoring points so that the anchoring range of the steel fiber and concrete can be enlarged, and therefore the bonding strength of the steel fiber is improved, and the anchoring capacity is improved; the structure of an anchoring protruding part enables the bonding area of the steel fibers and the concrete to be increased, so that the bonding strength of the concrete and the steel fibers is improved, and then the tensile strength of the concrete is improved; and the anchoring protruding parts can carry out limitation on the steel fiber, so that the steel fiber is not to be pulled out or moves easily.

Description

technical field [0001] The invention relates to the technical field of building materials, and more specifically relates to a special steel fiber structure with variable cross-section and multiple anchoring segments. Background technique [0002] With the extensive development of the construction industry in the world today, the requirements for construction quality are getting higher and higher. In order to improve the comprehensive performance of concrete, it is often necessary to add some steel fibers to the construction concrete projects at home and abroad to improve the tensile strength and anti-strength of ordinary concrete. Shear, bending, abrasion and crack resistance, improve the comprehensive performance of concrete. [0003] The prior art discloses that the connecting section of the steel fiber is a straight first anchoring section with an elliptical flat cross-section, and hook-shaped second anchoring sections are provided on both sides of the first anchoring sec...

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Problems solved by technology

[0004] However, in the actual application process, it is found that the steel fiber steel fiber has poor adhesion to reinforced concrete, and the anchorage is unstable, and it is easy to be pulled out and displaced, which will adversely affect the safety and durability of the concrete structure.

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