Horizontal loading asphalt mixture stability tester and test method thereof

Abstract

The invention discloses a horizontal loading asphalt mixture stability tester and a test method thereof. One end of the horizontal loading device extends into the constant-temperature water bath, the force value sensor is located on the horizontal loading device, the driving device is connected with the horizontal loading device and drives the horizontal loading device to move left and right, and a displacement sensor is arranged between the driving device and the horizontal loading device. A signal feedback end of the displacement sensor, a signal feedback end of the force value sensor and a signal opening and closing end of the driving device are respectively connected with the control unit, and a test piece to be tested is clamped on the horizontal loading device and is positioned in the constant-temperature water bath. Through the force value and displacement sensors, the stress state is displayed in real time through the display, a force value and displacement curve is formed, the condition of the test piece in the stress process can be effectively identified, and the strength attenuation state of the asphalt mixture can be represented.

Description

technical field [0001] The invention relates to a horizontally loaded asphalt mixture stability tester and a test method thereof, belonging to the field of asphalt mixture stability tests. Background technique [0002] At present, when the asphalt mixture stability test specimens in the road engineering industry are taken from the water bath under the test conditions, the specimens will have a certain exposure time in the air, which will cause the temperature of the specimens to drop, and the specimens cannot be kept at the heat preservation temperature. . Secondly, the fixture device is arranged vertically during the test, and the core sample clamped in the middle will be affected by the self-weight of the upper fixture, and there will be a certain pressure initially, which cannot be eliminated. The existing stability instrument has two kinds of force sensors, which are cumbersome to switch, and the force range of the test piece must be identified in advance. The displace...

AI Technical Summary

Problems solved by technology

The displacement sensor of the existing stability meter is generally an LVDT sensor, which is very easy to affect the test results due to unstable placement, looseness during the test process or improper long-term maintenance

Existing stability instruments can only print test results, but cannot reflect the stress state in real time according to the pressure and displacement

The existing stability meter does not have the function of real-time data upload

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