Rebound method concrete compressive strength detection device

Abstract

The invention provides a rebound method concrete compressive strength detection device, the tail end of a support rod is movably mounted at the top of a stress seat, a sleeve is fixedly mounted on theright surface of the stress seat, a push rod is slidably mounted in the sleeve, and a magnet is arranged at the left end of the push rod. A corresponding coil is arranged on the left side of the magnet and located in the stress base, and a movable base is fixedly installed at the right end of the push rod. After the rebound apparatus is recovered by using an internal spring, the positions of themetal sheet and the variable resistor are adjusted by moving the moving plate upwards in the supporting plate, and the resistance value of the variable resistor connected into a circuit is adjusted, so that the current in the coil connected with the variable resistor in series is adjusted, and a magnetic field generated by the coil pushes the magnet; the push rod and the movable seat are guaranteed to move rightwards in the guide rail rod, and the movable seat drives the clamping seat to rotate at the top end of the supporting rod while moving rightwards, so that the test block is turned overanticlockwise, and the purpose of turning over the test block is achieved.

Description

technical field [0001] The invention belongs to the technical field of concrete strength detection, and in particular relates to a device for detecting compressive strength of concrete by a rebound method. Background technique [0002] At present, there are many methods for detecting the compressive strength of concrete. For the detection of concrete compressive strength of structures or components, methods such as rebound method, ultrasonic rebound comprehensive method, after-installation extraction method or core drilling method can be used. The bullet method is a method to estimate the strength of concrete by bouncing the concrete surface with a dowel rod, and measuring the distance that the weight is bounced back, and taking the ratio of the bounce distance to the initial length of the spring as an indicator related to strength. [0003] In the process of rebound detection of concrete test blocks, it is necessary to manually squeeze the rebound tester for detection. The ...

AI Technical Summary

Problems solved by technology

[0003] In the process of rebound detection of concrete test blocks, it is necessary to manually squeeze the rebound tester for detection. The detection efficiency is low and the labor load is increased. In addition, it is impossible to perform rebound detection on different test block surfaces, so manual turning is required. The accuracy of the test results is not high. Therefore, in view of this, we will study and improve the existing structure and defects, and provide a rebound method concrete compressive strength test device, in order to achieve more practical value.

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