Method and tester for testing oil absorption rate of multifunctional fiber for asphalt mixture

Abstract

The invention discloses a determination method and a determination instrument for the oil absorption rate of fibers in an asphalt mixture. A control panel is in electric control connection with an electromagnetic vibration device, a centrifugal device, a collection device and an extrusion device; the electromagnetic vibration device provides a vibration function and is used for simulating the asphalt adsorption state of fibers in the skeleton dense asphalt mixture; the centrifugal device is used for verifying whether the test medium is adsorbed in the fiber. The collecting device is used for collecting redundant non-adsorbed test media; the extrusion device provides an extrusion function and is used for simulating the state that the fibers adsorb asphalt in the suspension compact asphalt mixture. The device and the method have the advantages that experimental test simulation can be performed according to stress states of fibers in asphalt mixtures with different structures, and the asphalt adsorption state of the fibers in the skeleton compact asphalt mixture can be simulated; simulating the asphalt adsorption state of the fiber in the suspension dense asphalt mixture; the temperature of the test medium can be controlled, the fiber adsorption asphalt can be directly tested, the oil absorption state of the fiber can be truly expressed, and the test precision is high.

Description

technical field [0001] The invention belongs to the technical field of test and detection, and relates to a multifunctional fiber oil absorption test method and a tester for asphalt mixture, and is especially suitable for measuring fiber oil absorption in asphalt mixture. Background technique [0002] With the development of society and economy, the performance requirements of asphalt pavement are getting higher and higher, and the addition of fiber can obviously improve the road performance of asphalt mixture. The ability of fiber to absorb asphalt in asphalt mixture directly affects the road performance of asphalt mixture. It is of great significance to accurately measure the oil absorption rate of fiber in asphalt mixture. [0003] The existing fiber oil absorption tester (JJYMX-I) uses kerosene as the fiber oil absorption test medium; the test process is to take the dried fiber, add a certain amount of kerosene, stir well and let it stand; then pour it into the sample s...

AI Technical Summary

Problems solved by technology

[0007] The invention discloses a multifunctional fiber oil absorption test method and measuring instrument for asphalt mixture, in order to solve the problem that in the prior art, kerosene is used instead of asphalt as the medium of fiber oil absorption test, which cannot directly characterize the absorption of asphalt in the asphalt mixture by fiber ignoring the ability of the fiber itself to absorb asphalt, and not considering the influence of different stress states on the oil absorption rate of the fiber in asphalt mixtures with different structures, the test medium and measurement methods cannot express the real oil absorption state of the fiber, and the test accuracy is poor, etc. question

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