Study on Corrosion Resistance of Modified Concrete Grounding Materials. Issue 1 (January 2020)

• Record Type: Journal Article
• Authors: Wang, Xianghan; Liu, Rui; Tan, Bo
• Is Part Of: IOP conference series. Volume 740:Issue 1(2020)
• Publication Date: 2020-01
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/740/1/012057
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: Steel is widely used as a grounding material in power system, but it is easily corroded in the soil. To resolve the problem a new type of modified concrete composite has been developed. The modified concrete, added with carbon fiber, wrapped around carbon steel to form a composite to reduce the steel corrosion. Three corrosion comparison tests had been taken out. The corrosion test under three different pH soils show that the composite's internal carbon steel's corrosion rate is better than zinc-clad steel's rate in all pH soils, and better than copper's in soil with pH=5, also better than copper-clad steel's in soil with pH=9. The typical area soil corrosion test shows that modified concrete can protect carbon steel in saline-alkali soil area and acid red soil area. The results of site-buried test show that modified concrete material can effectively reduce the corrosion of carbon steel in Tianjin saline soil. Those test results show that modified concrete, as external component, can protect internal carbon steel in various environments. The composite's anti-corrosion effect is better other metals regularly used in grounding. The composite can be used in power system grounding, especially in corrosive areas such as saline-alkali area and acid red area.