Accelerated corrosion effects on steel pipe pile materials in simulated Nhatrang seawater, Vietnam

Steel pipe piles are widely used in coastal infrastructure due to their high strength and durability. However, in tropical marine environments like Nha Trang, Vietnam, the high chloride content, temperature, and humidity significantly accelerate the corrosion process. Despite their extensive application, no published studies have specifically addressed the corrosion behavior of steel pipe piles in Vietnam's marine environment. This study investigated the accelerated corrosion effects on steel pipe pile materials in a simulated Nha Trang seawater environment, representing typical coastal conditions in Vietnam. Using an accelerated corrosion testing method, steel pipe pile material samples were exposed to controlled Nha Trang seawater conditions with varying salinity and environmental factors such as temperature and pH. The objective of this experiment was to analyze the corrosion rate and determine the corrosion mechanisms within a short period, simulating long-term effects typically seen in real seawater environments. The experiment revealed mass loss and pitting corrosion morphology on SKK490 samples, highlighting the degradation caused by high chloride content and other conditions in the Nha Trang simulated seawater environment. The results provide critical insights into the corrosion behavior specific to Nha Trang seawater environment of Vietnam, particularly regarding the reduction in cross-sectional area of the steel pile materials. These findings offer valuable guidance for coastal infrastructure projects, especially in the selection of appropriate materials and the development of effective corrosion prevention strategies for long-term use in seawater environments