Instrument for judging rebar space and protection layer thickness in steel concrete structure by magnetic force

Abstract

The invention relates to the technical field of building detection instrument, in particular to an instrument for judging rebar space and protection layer thickness in a steel concrete structure by amagnetic force. The instrument comprises a collection cylinder, wherein a first connection block is fixedly connected with the bottom of the collection cylinder, a cover is arranged at the top of thecollection cylinder, a second connection block is fixedly connected with one side, far away from the collection cylinder, of the cover, fixed pieces are fixedly connected with sides, adjacent to eachother, of the first connection block and the second connection block, connection holes are formed in the first connection block and the second connection block, and straps are arranged in the two connection holes. The instrument has the advantages that a protection film is arranged, the protection effect of a magnetic rolled plate is effectively improved, and damage to one side far away from a detection surface due to collision and friction of other objects during the application process of the magnetic rolled plate is effectively reduced, so that the magnetic rolled plate is difficult to damage, and the maintenance cost of the magnetic rolled plate is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of building detection instruments, in particular to an instrument for judging the distance between steel bars and the thickness of a protective layer in a steel concrete structure by using magnetic force. Background technique [0002] The reason why reinforced concrete can work together is determined by its own material properties. First, steel bars and concrete have approximately the same linear expansion coefficient, which will not cause excessive stress due to different environments. Second, there is good adhesion between steel bars and concrete. Sometimes the surface of the steel bar is also processed into spaced ribs to improve the mechanical engagement between the concrete and the steel bar. When this is still not enough to transmit the tension between the steel bar and the concrete, the end of the steel bar is usually bent 180 In addition, the alkaline environment provided by the calcium hydroxide in ...

AI Technical Summary

Problems solved by technology

[0003] (1) The existing instruments that use magnetic force to determine the spacing of steel bars and the thickness of the protective layer in steel concrete structures are inconvenient to carry, easy to damage, and have high maintenance costs, so they need to be improved

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