Experimental device and method for testing diffusion degree of chloride ions in concrete

Abstract

The invention discloses an experimental device for testing the diffusion degree of chloride ions in concrete, and belongs to the technical field of chloride ion testing. The experimental device comprises a constant-temperature box, a non-fixed flat plate is arranged in the constant-temperature box, the non-fixed flat plate is used for containing a concrete piece to be tested, the non-fixed flat plate is connected with a liquid storage device, the liquid storage device is used for temporarily storing a chloride ion solution, a dryer and a humidifier are arranged in the constant-temperature box, the dryer and the humidifier are used for simulating dry-wet circulation in the constant-temperature box, a closed bin can be installed on the non-fixed flat plate, an inflation hole is formed in the closed bin, and the inflation hole is used for introducing pressurized gas. The invention further discloses an experimental method for testing the diffusion degree of chloride ions in concrete. According to the device and method of the invention, the actual environment condition of concrete can be well simulated, and the diffusion degree of chloride ions can be tested under the interference of multiple factors.

Description

technical field [0001] The invention relates to the technical field of chloride ion testing, in particular to an experimental device and method for testing the diffusion degree of chloride ions in concrete. Background technique [0002] Today, my country's infrastructure is developing vigorously, and tunnel engineering, port engineering, and highway and railway engineering are developing rapidly. As one of the most important materials in the contemporary civil engineering industry, concrete has the advantages of low price, simple production, corrosion resistance in the air, A series of advantages such as high strength. [0003] However, with the gradual completion of infrastructure construction, how to maintain tunnels, ports, highways and railways has become an urgent problem. Theoretically, concrete has the function of corrosion resistance in the general environment. The life expectancy of concrete at the beginning is mostly between 50 and 200 years. The durability of con...

AI Technical Summary

Problems solved by technology

In the actual environment, concrete is a heterogeneous material, which will produce structural defects and fine cracks in the process of formation and development, and concrete will be affected by many factors, such as high temperature, dry and wet cycles, load compression, Chloride ion attack and sulfate attack cannot meet the ideal conditions of Fick's second law, so the universality of Fick's second law for concrete prediction has been questioned more and more

The above device obviously only considers the influence of a single factor, and does not consider the coupling of factors such as temperature, humidity, and load together

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