Simulation method of acid-rain corrosion solution

Abstract

The invention discloses a simulation method of an acid-rain corrosion solution. The method comprises the following steps: simulating an acid-rain solution by the use of a mixed solution of ammonia sulfate and nitric acid in a test, controlling SO1<2-> concentration by the use of ammonia sulfate, and regulating pH value of the solution by the use of nitric acid; carrying out an acid-rain corrosion circulation test by selecting concrete as a test piece; and immersing the test piece in the simulated acid-rain solution for 36 h, taking out the test piece and air-drying for 1 h, drying by a drying oven of 60 DEG C for 10 h, and cooling for 1 h. Total time of the one circulation is 48 h. There are many simulation test method for research on acid-rain corrosion damage on the market. However, the tests consider no natural factors such as temperature jump, alternation of wetting and drying, sun exposure and the like which also will aggravate the damage, and few researches on acid-rain corrosion are carried out. The method of the invention makes up the above defects for the research. Through the method, durability of concrete under the action of a single factor of acid rain and multiple factors is researched, and some achievements are made.

Description

technical field [0001] The invention belongs to the field of environment and relates to a laboratory simulation method, in particular to a simulation method of acid rain erosion solution. Background technique [0002] Acid rain is one of the environmental problems attracting worldwide attention. It can not only cause acidification of rivers, rivers, lakes, lakes and other water bodies, and cause the structure and function of aquatic ecosystems to be disordered, but also change the physical and chemical properties of soil and damage plants. The morphological structure and inhibition of plant metabolism will cause great harm to terrestrial ecosystems and human health. [0003] With the continuous acceleration of the industrialization process, the environmental pollution caused by the burning of coal, natural gas and automobile exhaust has led to the large-scale generation of acid rain. Because acid rain contains acidic substances, these substances can react with cement hydrat...

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Problems solved by technology

In addition, there are more or less devices or methods describing acid rain simulation in the patent, such as acid rain simulation corrosion device (patent number: 201320398920.4) and experimental device for simulating coating acid rain resistance test (patent number: 201320549264.3) are only some simulations of acid rain device is described, there is no real simulation method for acid rain erosion solution

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