Asphalt mixture accumulation type steam motion parameter detection device and method

Abstract

The invention discloses an asphalt mixture accumulation type steam motion parameter detection device comprising a closed cavity, a magnetic suspension balance, a sample barrel, a constant-temperaturecirculating bath A, a steam supply system and a vacuum pump; the magnetic suspension balance and the sample barrel are both arranged in the closed cavity, and the sample barrel is suspended on a hookbelow the magnetic suspension balance; the constant-temperature circulating bath A is arranged on the periphery of the closed cavity and is used for controlling the temperature in the closed cavity; the sealed cavity is provided with a gas inlet and a gas outlet, and the gas inlet and outlet respectively communicate with the steam supply system, the vacuum pump and a pressure return pipeline through a first pipeline. The invention further discloses an asphalt mixture steam motion parameter detection method, and the steam motion parameter in the asphalt mixture can be accurately and rapidly determined. The device and the method in the invention have the beneficial effects that the "air permeability" and "water retention" capability of the asphalt pavement under the actual service environment can be accurately and quickly quantified; and the rationality, the test precision and the test time of the test method are all remarkably improved compared with the existing test method.

Description

technical field [0001] The invention belongs to the technical field of pavement materials, and in particular relates to an asphalt mixture accumulation type water vapor movement parameter detection device and method. Background technique [0002] Asphalt pavement is an important pavement form of highways and urban roads in our country. Water damage is one of the main forms of early disease of asphalt pavement. A large number of asphalt pavements have water damage phenomena such as looseness, slurry, and potholes in the early stage of service; The extension of pavement service time and water damage will further affect road service performance, shorten the service life of asphalt pavement, and cause huge social and economic losses. [0003] Liquid water is considered to be the main source of water damage to asphalt pavement. Therefore, the current research on water damage to asphalt pavement mainly focuses on the damage caused by liquid water to asphalt mixture. The domestic ...

AI Technical Summary

Problems solved by technology

Accumulation-type water-air movement inside asphalt mixture is an important form of water-air accumulation inside asphalt mixture, but the current research on accumulation-type water-air movement inside asphalt mixture has many deficiencies in both experimental design and theoretical model, mainly including the following Two aspects: 1. The design of the water-air movement test for asphalt mixture in the current research is not rigorous, and there are many interference factors and large errors in the test process; 2. The establishment of the theoretical model of water-air movement inside the asphalt mixture is not rigorous. Movement parameters determined inaccurately

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