Tester for testing water stability of asphalt mixture

Abstract

The invention provides a tester for testing water stability of an asphalt mixture. The tester comprises a container, a cover plate, a water leveling chamber, an air chamber, a pressure meter, an air inlet valve, an air exhaust valve, a micro-adjustable valve, a water adding valve, an electric heat pipe and a steel partition board, wherein the electric heat pipe is arranged at the bottom in the container; the steel partition board is arranged in the middle in the container; an opening in the top of the container is covered tightly with the cover plate; the water leveling chamber is arranged on the side, close to the inside of the container, of the cover plate; the air chamber is arranged on the side, away from the inside of the container, of the cover plate; and the air chamber is communicated with the inside of the container through an air hole; the air inlet valve, the air exhaust valve, the micro-adjustable valve and the pressure meter are all installed on the cover plate and are communicated with the air chamber; and the water adding valve is arranged on the cover plate and are communicated with the inside of the container. The tester is perfect in function, easy to operate and capable of well simulating an actual work condition of the water effect on an asphalt pavement, and has good practical effect and application value on a water damage test of the modern asphalt pavement.

Description

technical field [0001] The invention belongs to the field of asphalt mixture water stability evaluation devices, in particular to an asphalt mixture water stability tester. Background technique [0002] With the rapid development of expressways in my country, asphalt pavement has become the main pavement form. Due to the increasing traffic volume, the asphalt pavement is facing a severe test, and the early damage phenomenon of the pavement is common, and the damage caused by the hydrodynamic pressure is particularly prominent. Rainwater enters the pavement structure through the gaps or cracks in the pavement, and free water cannot seep out to form stagnant water. When a vehicle drives over a road surface with stagnant water or road surface water, the water between the tire and the road surface is continuously squeezed by the high-speed tires to form hydrodynamic pressure, which accelerates the softening and peeling of the asphalt mixture, which seriously affects the asphalt...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a water stability tester for asphalt mixture, which aims to solve the problem that the existing technology cannot simulate the actual situation of the road surface well, and its evaluation method and index cannot establish a good corresponding relationship with the road performance

Images