Carbon dioxide erosion testing device and simulation method

Abstract

The invention discloses a carbon dioxide erosion testing device and a simulation method and relates to the field of carbon dioxide erosion testing simulation. The carbon dioxide erosion testing devicecomprises a carbon dioxide storage device, a reaction container, a pressure control component and a water amount control device, wherein the carbon dioxide storage device is used for containing carbon dioxide; the reaction container is used for containing a testing sample; the pressure control component is used for controlling the pressure of the carbon dioxide in the reaction container; the water amount control device is used for controlling the water amount inside the reaction container. The carbon dioxide erosion testing simulation method which comprises the following steps: putting a testing sample into the reaction container; vacuuming the reaction container; increasing the amount of water inside the reaction container; increasing the concentration of the carbon dioxide inside the reaction container. By adopting the carbon dioxide erosion testing device and the simulation method disclosed by the invention, carbon dioxide erosion action of a carbon dioxide erosion function to concrete structures on the ground, and carbon dioxide erosion action of carbon dioxide dissolved in water to concrete structures soaked in water, are effectively simulated.

Description

technical field [0001] The invention relates to the field of carbon dioxide erosion test simulation, in particular to a carbon dioxide erosion test device and a simulation method. Background technique [0002] In recent years, the erosion of CO2 on concrete structures has attracted increasing attention. Monitoring results show that the concentration of CO2 in the atmosphere has increased by 25% in the past 100 years. In the middle of the 19th century, the average concentration of CO2 in the atmosphere was 280×10-6 , reached 379×10-6 in 2005, and is expected to rise to 650×10-6 by 2100. The increase in the concentration of carbon dioxide in the atmosphere will aggravate the carbon dioxide erosion of the above-ground concrete structure. At the same time, the carbonic acid corrosive water environment has a serious erosion effect on the concrete in underground structural engineering and hydraulic structures; CO2 exists in oil and gas layers or formation water as an associated ga...

AI Technical Summary

Problems solved by technology

At the same time, the carbonic acid corrosive water environment has a serious erosion effect on the concrete in underground structural engineering and hydraulic structures; CO2 exists in oil and gas layers or formation water as an associated gas of oil and natural gas or a component of formation water, and oil well cement stones Under the action of water-soluble CO2, the compressive strength and structure are damaged; during the sampling of carbon dioxide storage sites, carbon dioxide dissolves in water to form carbonic acid, and the erosion of carbonic acid on cement materials will cause long-term performance degradation of cement materials, which may cause the risk of carbon dioxide leakage

These concrete structures eroded by carbonic acid water environment are often located underground or hidden projects. Once the concrete structure is eroded and damaged, it will have a greater impact on the entire project.

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