Method for testing interlayer bonding strength of 3D printing concrete
A 3D printing and bonding strength technology, which is applied in the preparation of test samples, measuring devices, instruments, etc., can solve the problems of inaccurate testing of 3D printing concrete interlayer bonding strength, and achieve simple test methods and high test accuracy. Effect
Inactive Publication Date: 2020-02-21
南京绿色增材智造研究院有限公司
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[0003] Purpose of the invention: Aiming at the problems existing in the prior art, the present invention provides a method for testing the interlayer bond strength of 3D printed concrete, wh
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[0023] This embodiment is a further improvement of Embodiment 1. The main improvement is that in the bonding strength test positioning device in Embodiment 1, two pressure-bearing bases 2 are fixedly installed on the bottom plate 1, so that the bonding strength test positioning The device can only be applied to the test positioning of the three-layer 3D printed concrete standard part 3 of one size, and the scope of application is narrow. And in the bonding strength test positioning device in the present embodiment, as figure 2 , and fix a horizontal slide rail 4 on the bottom plate 1, and connect one of the two pressure-bearing bases 2 on the slide rail 4 by adjusting the position of the pressure-bearing base 2 on the slide rail 4 Adjust the position of the three-layer 3D printed concrete standard part 3 on the pressure-bearing base 2. After the adjustment, the pressure-bearing base 2 can be clamped and positioned on the slide rail 4 by the left and right positioning blocks 5...
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The invention relates to the field of 3D printing concrete, and discloses a method for testing the interlayer bonding strength of 3D printing concrete. The method comprises the following steps: S1, forming a three-layer 3D printing concrete standard part with two adjacent layers being bonded; S2, performing leveling of each plane of the three-layer 3D printing concrete standard part; S3, measuringthe area of the bonding surface of two adjacent layers of the three-layer 3D printing concrete standard part, recording the area as S, and measuring the mass of the three-layer 3D printing concrete standard part, and recording the mass as m; S4, measuring a force F when the bonding surfaces on the two sides of the middle layer of concrete of the three-layer 3D printing concrete standard part arebroken, wherein the interlayer bonding strength of the three-layer 3D printing concrete standard part is (F + mg/3)/2S. According to the invention, the interlayer bonding strength of the 3D printing concrete can be simply and accurately tested, and the problem of inaccurate testing of the interlayer bonding strength of the 3D printing concrete is solved.
Description
technical field [0001] The invention relates to the field of 3D printing concrete, in particular to a method for testing the bond strength between layers of 3D printing concrete. Background technique [0002] The 3D printing concrete process makes it possible to realize special-shaped concrete structures and irregular concrete structures, and at the same time makes the concrete structure more beautiful. However, the bonding force between layers of 3D printed concrete is relatively weak, so the level of bonding strength between layers determines the life of 3D printed concrete. However, the molding method of 3D printed concrete makes the surface very rough, and the size of the concrete layer varies from layer to layer, which makes it very difficult to test the bond strength between layers of 3D printed concrete. Contents of the invention [0003] Purpose of the invention: Aiming at the problems existing in the prior art, the present invention provides a method for testing ...
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Login to View More IPC IPC(8): G01N19/04G01N1/28
CPCG01N19/04G01N1/28
Inventor 张亚梅李保亮陈春张培根孙正明
Owner 南京绿色增材智造研究院有限公司