Electrochemical Study of Stainless Steel Anchor Bolt Corrosion Initiation in Corrosive Underground Water

Abstract

Application of low-nickel stainless steel anchor was one of the economical and effective methods to solve the durability problem of slope engineering. At present, there are scarce reports about corrosion characteristics of low-nickel stainless steel in various underground waters. For investigating the corrosion initiation of stainless steel anchor bolt in corrosive underground water, the effect of SO42−, HCO3− and pH value on the corrosion behavior of 201 low-nickel stainless steel was studied via electrochemical methods. As the SO42− concentration, HCO3− concentration or pH value increase, the open circuit potential and polarization resistance increase, while the double-layer capacitance, donor density and passive current density decrease. The results indicate that corrosion is inhibited by SO42−, HCO3− and OH− in underground water. In addition, the inhibitive efficiency of SO42− and HCO3− increases with the SO42− and HCO3− concentration.

Water-Related Natural Disasters in Mountainous Area, volume II

“…Frontiers in Earth Science frontiersin.org 03 Fan et al 10.3389/feart.2022.992842 13.36% of the total land area (Wei et al, 2012;Lu et al, 2021). Tibet appears to be particularly vulnerable to climate change and has become one of the most degraded ecosystems in the world (Teng et al, 2018).…”

“…Eigenbrod (1996) obtained a linear relationship between the net volume changes after freezing and thawing. Lu et al (2021) selected seven evaluation factors to analyze the temporal and spatial characteristics of freeze- Frontiers in Earth Science frontiersin.org 05 Fan et al 10.3389/feart.2022.992842 thaw erosion in the source regions of the Chin-Sha, Ya-Lung and Lantsang Rivers. Guo et al (2015) established an estimation model of FT erosion by introducing microwave remote sensing techniques.…”

“…5) soil, FT erosion is closely related to the soil physical property. In this study, the selection of indicators was considered on the basis of empirical evidence from previous research (Shi et al, 2012;Guo et al, 2015;Lu et al, 2021). In addition, soil physical properties are often influenced by temperature, precipitation, and vegetation.…”

Experimental study on the mechanical properties and failure modes of BFRP bar anchor systems under static tension loading

“…Prestressed anchor cables are usually made of steel strands or high-strength steel wires. Steel is prone to stress corrosion in humid environments and brackish groundwater (Zhu et al, 2022), leading to a loss in the prestress of the anchor cable (Wang et al, 2019;Ma et al, 2021). After a substantial loss of prestressing, the stability of the rock mass is affected, easily causing a series of geological disasters, such as landslides or the collapse of underground cavities (Yi et al, 2014;Wang et al, 2018;Guo et al, 2020;Li et al, 2020;Zhu et al, 2020).…”

Effect of heat treatment process on precipitation of V microalloyed steel

“…In the past, there has been a continued push to produce high-strength structural steels at lower expenditure, and microalloyed steels have moved in several directions [10,11]. For low-carbon and low-alloy steels, the addition of Cr, Ti, Nb, V, and other alloying elements form precipitates at the grain boundaries and phase interfaces, and can further refine these grains are needed in order to obtain a final morphology that provides better performance [12][13][14][15][16][17].…”