Pitch mixed material cracking resistance tester

Abstract

The invention relates to a pitch mixed material cracking resistance tester which is used for solving the problem of test detection of pitch mixed materials and comprises an environmental box, a fixed support seat, a sticking platform plate, a slide plate, a slide plate displacement loading mechanism, a spoke type sensor, a rotating coupling and a servo motor, wherein the fixed support seat is installed in the environmental box; the sticking platform plate is installed on the fixed support seat and touches and is connected with the slide plate in a movable fit way; the bottom of the slide plate is connected with the slide plate displacement loading mechanism; the slide plate displacement loading mechanism is connected with the servo motor by the rotating coupling, and the spoke type sensoris connected to a coupling disk of the rotating coupling; a side support seat of which the bearing is embedded into the environmental box is installed on the rotating coupling; and the servo motor isconnected outside the side body of the environmental box. The invention has simple structure and simple and convenient use and is suitable for carrying out a cracking resistance test on various pitchmixed materials.

Description

technical field [0001] The invention relates to a road pavement material testing instrument, in particular to an instrument for testing the anti-crack performance of asphalt mixture. Background technique [0002] The asphalt pavement in highway construction is mainly paved on the base layer with asphalt mixture and compacted by road rollers. Asphalt mixture is a road construction material mixed with coarse aggregate, fine aggregate and filler of different particle sizes and asphalt binder according to a certain gradation. The type of asphalt in the asphalt mixture, the content of asphalt and the gradation of various mineral materials will affect the crack resistance of the asphalt mixture, especially the reflective cracks on the asphalt pavement caused by the impact of the semi-rigid base layer are a relatively common form of damage. It seriously affects the service life of the road. Therefore, before the large-scale construction of the road surface, the crack resistance te...

AI Technical Summary

Problems solved by technology

However, in the known technology, only the anti-crack performance test items have been proposed in road construction at present, and there are no mature test standards and test instruments.

In order to achieve the purpose of testing and inspection of asphalt mixture, use existing instruments and equipment such as reciprocating pressure testing machine, carry out displacement (strain) and load (stress) to test and detect the anti-cracking performance of asphalt mixture, the composition of the overall test and detection instrument The structure and operation are quite complicated, and the test and detection environment is unstable, which is greatly affected by human factors, and the data accuracy is poor, which causes inconvenience to use

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