Road material corrosion testing machine

Abstract

The invention discloses a road material corrosion testing machine. The road material corrosion testing machine disclosed by the invention comprises a corrosion chamber, a cylinder and an air pump, wherein a side door is arranged on the first side wall of the corrosion chamber; an electromagnetic valve and a counting sensor are arranged on a support plate; an air inlet is formed on one side face of the electromagnetic valve; an air outlet and an air return port are formed on the other side face of the electromagnetic valve; the electromagnetic valve is connected with a controller; the countingsensor is connected with the controller; a pressure bottom plate, a pressure top plate, a guide rod and at least two connecting rods are arranged in the corrosion chamber; a test piece tray is installed at the upper end of the guide rod; the pressure bottom plate is movably installed on the guide rod; the ends of a cylinder piston rod pass through the support plate and are connected with the pressure top plate through a through hole; a counting sheet is installed on the cylinder piston rod; a water injection port is formed at the top of the corrosion chamber; a liquid taking hole is formed onthe first side wall of the corrosion chamber; and a liquid taking pipe is installed in the liquid taking hole. The road material corrosion testing machine disclosed by the invention can be used for realizing uniform solution concentration in the corrosion course and ensures the corrosion effect accuracy of the whole test piece layer.

Description

Technical field [0001] The invention relates to a corrosion testing machine, in particular to a road material corrosion testing machine. Background technique [0002] The anti-corrosion performance of the base material will affect the performance and life of the pavement. Under the action of the vehicle load, the pavement material will reduce the strength and the bearing capacity of the pavement due to the corrosion effect. The corrosion resistance of pavement materials has become one of the important contents of pavement durability research. [0003] At present, the research on material dissolution is mainly concentrated in hydraulic construction. The widely used dissolution test methods mainly include the following four categories: First, the leaching method, that is, the cement slurry that has been cured to a certain age is broken, and a certain amount of particles is taken. The diameter of the particles is used as the sample, and then a certain amount of distilled water or low...

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Problems solved by technology

Among them, the leaching method is to break the test piece, which does not conform to the actual corrosion state of the road material; the through-flow method is to force the water to pass through the test piece under a certain pressure, so as to better simulate the actual situation of the water-retaining building. However, it is not consistent with the actual road material dissolution environment; the jet method uses the weight loss of the specimen to measure the dissolution state, and the dissolution test is not directly carried out; the simulated accelerated test is that the water rotates and flows on the surface of the specimen, which cannot simulate the real road load.

[0004] At present, there is no feasible device for the test method of road material erosion

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