Concrete density detector for municipal engineering detection

Abstract

The invention belongs to the field of engineering detection, and particularly relates to a concrete density detector for municipal engineering detection. The concrete density detector comprises a rebound apparatus, the lower portion of the outer surface of an external column is fixedly connected with the inner wall of the rebound apparatus, and a display meter is fixedly connected to the upper surface of the external column; an inner cavity of the display meter is fixedly connected with an inner cavity of the rebound apparatus through an electric wire, a lifting handle is fixedly connected to the axis of the external connection column through an open hole, and the bottom end of the lifting handle is fixedly connected with the inner cavity of the rebound apparatus through a connection column. When the device is used, a user can easily apply force to the device, different from a common rebound apparatus, the rebound apparatus part of the device is provided with four groups of test points, four groups of data can be obtained after the device is used for testing once, the average density of concrete at the position can be obtained through simple calculation of a display meter, more accurate and reliable data can be obtained, the test range is expanded, and the use is more convenient.

Description

technical field [0001] The invention belongs to the field of engineering detection, in particular to a concrete density detector for municipal engineering detection. Background technique [0002] Concrete refers to the collective name of engineering composite materials that aggregate aggregates into a whole by cementitious materials. Recycled concrete refers to the waste concrete blocks that are crushed, cleaned, and graded, and mixed with grading in a certain proportion. Replace natural aggregates such as sand and gravel, and then add cement, water, etc. to make new concrete. Within a certain range, the strength of concrete is proportional to the density. If the density is high, the strength will be correspondingly higher. The compressive strength of cement concrete cubes Test, as an important index to evaluate the strength of cement concrete, the existing detection methods of building concrete mainly include: rebound method, ultrasonic method, core drilling sampling method...

AI Technical Summary

Problems solved by technology

[0003] Since it is difficult for the ultrasonic detector to accurately measure the strength of the concrete, the core drilling method is not easy to sample, so the rebound method is often used during construction, which can more conveniently and accurately detect whether the concrete density is qualified, but the use of the rebound method A concrete rebound tester is required to detect the density of concrete. The general concrete rebound tester needs to be kept perpendicular to the contact surface during detection. The iron core is retracted into the sleeve by pressing the user, so the test range is small. It is quite inconvenient when measuring large concrete buildings, and the accuracy of the test is also biased

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