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Testing method of testing machine for testing interlayer tensile strength of 3D printing concrete

A concrete layer, tensile strength technology, applied in the direction of strength characteristics, the use of stable tension / pressure test material strength, measuring devices, etc., can solve the problems of difficult to obtain test results, etc., to facilitate installation and operation, reduce errors, Effect of reducing sliding friction

Pending Publication Date: 2022-07-29
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the interface positive tension test is the most effective method to evaluate the interface bonding performance, but just like testing the axial tensile performance of traditional concrete, it has high requirements for the test device and test method, and it is difficult to obtain an ideal test method. As a result, the tensile properties of concrete are usually reflected indirectly by means of beam bending tests and split tension tests.

Method used

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  • Testing method of testing machine for testing interlayer tensile strength of 3D printing concrete
  • Testing method of testing machine for testing interlayer tensile strength of 3D printing concrete
  • Testing method of testing machine for testing interlayer tensile strength of 3D printing concrete

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Embodiment 1

[0040] The test method of the 3D printing concrete interlayer tensile strength test machine in this embodiment is as follows: figure 2As shown, the testing machine includes a self-reaction force frame, a force-applying device, a specimen clamping device and a control and data acquisition system; the self-reaction force frame is used to support other components; the force-applying device is fixedly arranged on the self-reaction force frame The bottom of the test piece is used to exert pressure on the specimen holding device as the power source of the whole testing machine; the specimen holding device is placed above the force applying device, and the upper end of the specimen holding device is connected to the self-reaction force through the load sensor 41 The top of the frame is fixedly connected, and the specimen clamping device is used to clamp the specimen to be tested 51 and convert the pressure exerted by the force application device into the axial tensile stress of the s...

Embodiment 2

[0059] This embodiment is roughly the same as the first embodiment, and the similarities will not be repeated. The differences are: Figure 7 As shown, the servo power source 21 of the force applying device is replaced by a jack 22. The jack 22 can be a hydraulic jack or a mechanical jack. The use of the jack can reduce the cost of the testing machine.

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Abstract

The invention belongs to the technical field of intelligent construction, and particularly relates to a testing method of a testing machine for testing interlayer tensile strength of 3D printing concrete, and the testing method comprises the following steps: firstly, preparing a to-be-tested piece, starting the testing machine, and starting a control and data acquisition system; then putting a test piece to be tested into an upper square clamping frame and a lower square clamping frame of the test piece clamping device; secondly, the control and data acquisition system controls the force application device to drive the lower square clamping frame to move upwards, and the upper square clamping frame and the lower square clamping frame relatively displace to enable the to-be-tested piece to bear tensile force and be damaged; and finally, the control and data acquisition system controls the force application device to drive the lower square clamping frame to move downwards, the two parts of the disconnected test piece are taken out, the next group of test pieces are installed, and the next group of test is started. The test method is small in test error, high in test precision and high in test efficiency.

Description

technical field [0001] The invention belongs to the technical field of intelligent construction, and in particular relates to a test method of a 3D printing concrete interlayer tensile strength test machine. Background technique [0002] As Industry 4.0 moves towards the direction of artificial intelligence, the era of intelligent construction has arrived. In order to adapt to the future development trend of science and technology, the construction industry must rely on 3D printing technology. As a new type of additive manufacturing process, 3D printing integrates computer-aided design, material processing and molding processes. Based on digital models, special materials are extruded, sintered, melted, light-cured, sprayed through software and CNC systems. and other methods to build up solid structures layer by layer. This makes it possible to manufacture complex structural parts that cannot be realized due to the constraints of traditional manufacturing methods, and has br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/10G01N3/04G01N3/02B33Y80/00
CPCG01N3/10G01N3/04G01N3/02B33Y80/00
Inventor 汤寄予高丹盈张亚可杨林房栋庞育阳谷志强郭奥飞
Owner ZHENGZHOU UNIV