Device for detecting concrete strength by common bearing platform hoop method and detection method thereof

Abstract

The invention relates to a device for detecting concrete strength by a common bearing platform hoop method and a detection method thereof, the device for detecting the concrete strength by the common bearing platform hoop method comprises a bearing platform in-situ hoop device, and the bearing platform in-situ hoop device comprises a datum plate (bearing platform), an automatic drilling and grinding machine and an automatic in-situ hoop instrument. According to the detection method for detecting the concrete strength by the hoop method, firstly, a hole is drilled in a to-be-detected concrete member, the datum plate is fixed to the to-be-detected member through an expansion pipe bolt hole by using an expansion pipe bolt, then a test piece is prepared, and finally, a detection result is automatically calculated. The equipment and the detection method have the advantages that the detected concrete test piece is prevented from bearing lateral force in the test process, it is guaranteed that the end face of the concrete test piece is perpendicular to the axis, it is guaranteed that the side face of the concrete test piece is straight and smooth, the purpose of manufacturing a standard concrete test piece on site is achieved, and the detection precision is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of concrete strength detection, in particular to a device and a detection method for detecting concrete strength by a common platform hoop method. Background technique [0002] Compressive strength is an important performance parameter of concrete, which is directly related to the overall quality and safety of concrete components and even engineering construction. According to the characteristics of concrete components in different engineering parts, it is necessary to meet the corresponding compressive strength requirements. Therefore, the detection of concrete compressive strength is a very important task. [0003] In the prior art, there are many methods for detecting the compressive strength of concrete, which are as follows: [0004] 1. Shear compression method: apply a pressure perpendicular to the pressure-bearing surface on the right-angled side of the concrete member according to the shear pressure...

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Problems solved by technology

[0004] 1. Shear compression method: apply a pressure perpendicular to the pressure-bearing surface on the right-angled side of the concrete member according to the shear pressure meter, so that the right-angled side of the concrete member will produce local shear compression damage, and estimate the resistance of the concrete member according to the shear pressure at this time. Compressive strength; the defect of this method: the direct use of concrete components for detection will cause certain damage to the concrete components, limited by the shape of the concrete components, the detection position, the range of compressive strength and the thickness of the concrete components, the situation of shear pressure is relatively Complicated, not conducive to ensuring the accuracy of test results

[0005] 2. Core drilling method: Drill concrete specimens on concrete components, and process them into standard core samples, and test their compressive strength on a pressure testing machine. The defect of this detection method: it causes greater damage to concrete components, and During the detection process, many factors are affected

[0006] 3. Rebound method: According to the relationship between the hardness and strength of the concrete member surface, the compressive strength of the concrete member is estimated; although this method does not cause damage to the concrete member, but through the relationship between the surface hardness and strength, the deduced The accuracy of the compressive strength is low, and it is difficult to accurately reflect the concrete compressive strength; it is not suitable for thin-walled and small concrete members that vibrate when shot

However, the test operation process is relatively cumbersome, and there are many restrictions and requirements on the on-site test conditions, and there are relatively many influencing factors, which are prone to test deviations and directly affect the detection accuracy.

[0008] 5. Post-anchoring method: This method estimates the compressive strength of concrete based on the pull-out force of post-anchoring method destroying concrete components within the range of 30mm on the surface of concrete components; Among them, there are many influencing factors and the stress is complicated, so it is difficult to achieve the purpose of accurate detection

The disadvantages of this technical solution are: high equipment weight, high cost, complicated operation, and low degree of automation

The disadvantage of this technical solution is: its structure is simple, but the test accuracy is not enough

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