Device for determining adhesive property of steel bars and concrete in extruding manner and testing method of device

Abstract

The invention discloses a device for determining the adhesive property of a steel bar and concrete in an extruding manner. The device comprises a loading framework, a concrete test piece, the steel bar, PVC (Polyvinyl Chloride) pipes, a displacement meter, a force sensor, a hydraulic jack, an oil pump, a static signal testing and analysis system and a computer, wherein the loading framework is composed of an upper steel plate, a lower steel plate and a high-intensity bolt; the steel bar is arranged in the middle of a concrete test piece; the upper end of the steel bar penetrates through a round hole formed in the middle of the upper steel plate; the displacement meter and the force sensor are arranged at the upper end and lower end of the steel bar respectively; the hydraulic jack is arranged below the force sensor; the displacement meter and the force sensor are connected with the static signal testing and analysis system; the static signal testing and analysis system is connected with the computer; the PVC pipes sleeves the two ends of the part, located in the concrete test piece, of the steel bar. The device disclosed by the invention has a simple structure and is convenient to detach; a few of materials and instruments are needed; the device is not only suitable for scientific researches, but also suitable for testing the adhesive property of the steel bar and the concrete at a construction site.

Description

technical field [0001] The invention relates to an extruding device and a testing method for measuring the bonding performance of steel bars and concrete, which belong to the field of concrete construction. Background technique [0002] The bonding performance between steel bars and concrete is the basis for the joint work of steel bars and concrete components, and it is also the premise for the load bearing of reinforced concrete structures. The working stress necessary to establish the structural load-bearing in the concrete. [0003] At present, most of the devices for measuring the bonding performance of steel bars and concrete adopt the pull-out type, and the pull-out type test method needs to use a material testing machine, and the device is complicated. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide an extrusion-type device for measuring the bonding performance of steel bars and concrete in view of the a...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the devices for measuring the bonding performance of steel bars and concrete adopt pull-out type, and the pull-out type test method needs to use a material testing machine, which is complicated.

Images